wovepaper — the arXiv observatory

papers

Publications (82)

hep-ex2013

First measurement of time-dependent CP violation in Bs -> K+K- decays

LHCb collaboration, R. Aaij, B. Adeva +657

Direct and mixing-induced CP-violating asymmetries in Bs -> K+K- decays are measured for the first time using a data sample of pp collisions, corresponding to an integrated luminos…

hep-ex2013

Measurement of the $C A^¶$ asymmetry in $B^{+} \to K^{+} I^¼^{+} I^¼^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +657

A measurement of the $C A^¶$ asymmetry in $B^{+} \to K^{+} I^¼^{+} I^¼^{-}$ decays is presented using $pp$ collision data, corresponding to an integrated luminosity of 1.0 $f b^{- 1}$ …

hep-ex2013

Precision measurement of the $B_{s}^{0}$ - $B ˉ_{s}^{0}$ oscillation frequency with the decay $B^{0}_{s}\rightarrowD^{-}_{s}Ï^{+}$

LHCb collaboration, R. Aaij, C. Abellan Beteta +622

A key ingredient to searches for physics beyond the Standard Model in $B_{s}^{0}$ mixing phenomena is the measurement of the $B_{s}^{0}$ - $B ˉ_{s}^{0}$ oscillation frequency, wh…

hep-ex2013

Search for the rare decay KS -> mu+ mu-

LHCb collaboration, R. Aaij, C. Abellan Beteta +616

A search for the decay KS -> mu+ mu- is performed, based on a data sample of 1.0 fb^-1 of pp collisions at \sqrt{s}=7 TeV collected by the LHCb experiment at the Large Hadron Colli…

hep-ex2013

Search for rare $B_{(s)}^{0} \to I^¼^{+} I^¼^{-} I^¼^{+} I^¼^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +620

\noindent A search for the decays $B_{s}^{0} \to I^¼^{+} I^¼^{-} I^¼^{+} I^¼^{-}$ and $B^{0} \to I^¼^{+} I^¼^{-} I^¼^{+} I^¼^{-}$ is performed using data, corresponding to an integrated luminos…

hep-ex2013

Differential branching fraction and angular analysis of the decay $B_{s}^{0} \to I ¨ I^¼^{+} I^¼^{-}$

LHCb collaboration, R. Aaij, C. Abellan Beteta +636

The determination of the differential branching fraction and the first angular analysis of the decay $B_{s}^{0} \to I ¨ I^¼^{+} I^¼^{-}$ are presented using data, corresponding to an integrat…

hep-ex2013

Search for direct CP violation in D0 -> h- h+ modes using semileptonic B decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

A search for direct CP violation in D0 -> h- h+ (where h=K or pi) is presented using data corresponding to an integrated luminosity of 1.0 fb^-1 collected in 2011 by LHCb in pp col…

hep-ex2013

Measurement of the fragmentation fraction ratio $f_{s} / f_{d}$ and its dependence on $B$ meson kinematics

LHCb collaboration, R. Aaij, C. Abellan Beteta +624

The relative production rate of $B_{s}^{0}$ and $B^{0}$ mesons is determined with the hadronic decays $B_{s}^{0} \to D_{s}^{-} I ¨ ^{+}$ and $B^{0} \to D^{-} K^{+}$ . The…

hep-ex2013

Precision measurement of the Lambda_b baryon lifetime

LHCb collaboration, R. Aaij, B. Adeva +652

The ratio of the Îb baryon lifetime to that of the B0 meson is measured using 1.0/fb of integrated luminosity in 7 TeV center-of-mass energy pp collisions at the LHC. The Îb bary…

hep-ex2013

Measurement of the CP asymmetry in B0 -> K*0 mu+ mu- decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +620

A measurement of the CP asymmetry in B0 -> K*0 mu+ mu- decays is presented, based on 1.0fb-1 of pp collision data recorded by the LHCb experiment during 2011. The measurement is pe…

hep-ex2013

Production of J/psi and Upsilon mesons in pp collisions at sqrt(s) = 8 TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +631

The production of J/psi and Upsilon mesons in pp collisions at sqrt(s) = 8 TeV is studied with the LHCb detector. The J/psi and Upsilon mesons are reconstructed in the mu+mu- decay…

hep-ex2013

Measurement of the time-dependent CP asymmetry in B0 -> J/Ï KS0 decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +622

This Letter reports a measurement of the CP violation observables S_J/ÏKS0 and C_J/ÏKS0 in the decay channel B0 -> J/Ï KS0 performed with 1.0/fb of pp collisions at sqrt(s) = 7…

hep-ex2013

Analysis of the resonant components in B0->J/Ïpi+pi-

LHCb collaboration, R. Aaij, C. Abellan Beteta +620

Interpretation of CP violation measurements using charmonium decays, in both the B0 and Bs systems, can be subject to changes due to "penguin" type diagrams. These effects can be i…

hep-ex2013

Observation of the suppressed ADS modes $B^{\pm} \to [I ¨ ^{\pm} K^{\mp} I ¨ ^{+} I ¨ ^{-}]_{D} K^{\pm}$ and $B^{\pm} \to [I ¨ ^{\pm} K^{\mp} I ¨ ^{+} I ¨ ^{-}]_{D} I ¨ ^{\pm}$

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

An analysis of $B^{\pm} \to D K^{\pm}$ and $B^{\pm} \to D I ¨ ^{\pm}$ decays is presented where the $D$ meson is reconstructed in the four-body final state $K^{\pm} I ¨ ^{\mp} I ¨ ^{+} I ¨ ^{-}$ . U…

hep-ex2013

First observation of the decay $B_{s 2}^{} (5840)^{0} \to B^{+} K^{-}$ and studies of excited $B_{s}$ mesons

LHCb collaboration, R. Aaij, C. Abellan Beteta +621

Properties of the orbitally excited (L=1) $B_{s}$ states are studied using 1.0 fb $^{- 1}$ of pp collisions at $s = 7$ TeV collected with the LHCb detector. The first observation…

hep-ex2013

Limits on neutral Higgs boson production in the forward region in $pp$ collisions at $s = 7$ TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +621

Limits on the cross-section times branching fraction for neutral Higgs bosons, produced in $pp$ collisions at $s = 7$ TeV, and decaying to two tau leptons with pseudorapidit…

hep-ex2013

Exclusive $J / I ¨ $ and $I ¨ (2 S)$ production in $pp$ collisions at $s = 7$ TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +620

Exclusive $J / I ¨ $ and $I ¨ (2 S)$ vector meson production has been observed in the dimuon channel using the LHCb detector. The cross-section times branching fractions to two muons with…

hep-ex2013

Measurement of form-factor independent observables in the decay $B^{0} \to K^{* 0} I^¼^{+} I^¼^{-}$

LHCb collaboration, R. Aaij, B. Adeva +655

We present a measurement of form-factor independent angular observables in the decay \mbox{ $B^{0} \to K^{*} (892)^{0} I^¼^{+} I^¼^{-}$ }. The analysis is based on a data sample corresponding t…

hep-ex2013

Measurements of the branching fractions of $B^{+} \to p p ˉ K^{+}$ decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

The branching fractions of the decay $B^{+} \to p p ˉ K^{+}$ for different intermediate states are measured using data, corresponding to an integrated luminosity of $1.0 fb^{-1}…

hep-ex2013

Searches for violation of lepton flavour and baryon number in tau lepton decays at LHCb

LHCb collaboration, R. Aaij, C. Abellan Beteta +630

Searches for the lepton flavour violating decay $I ¨ ^{-} \to I^¼^{-} I^¼^{+} I^¼^{-}$ and the lepton flavour and baryon number violating decays $I ¨ ^{-} \to p ˉ I^¼^{+} I^¼^{-}$ and $Ï^-…

hep-ex2012

First evidence for the decay Bs -> mu+ mu-

LHCb collaboration, R. Aaij, C. Abellan Beteta +617

A search for the rare decays Bs->mu+mu- and B0->mu+mu- is performed using data collected in 2011 and 2012 with the LHCb experiment at the Large Hadron Collider. The data samples co…

physics.acc-ph2012

Present status and first results of the final focus beam line at the KEK Accelerator Test Facility

P. Bambade, M. Alabau Pons, J. Amann +91

ATF2 is a final-focus test beam line which aims to focus the low emittance beam from the ATF damping ring to a vertical size of about 37 nm and to demonstrate nanometer level beam…

hep-ex2013

Observation of a resonance in $B^{+} \to K^{+} I^¼^{+} I^¼^{-}$ decays at low recoil

LHCb collaboration, R. Aaij, B. Adeva +657

A broad peaking structure is observed in the dimuon spectrum of $B^{+} \to K^{+} I^¼^{+} I^¼^{-}$ decays in the kinematic region where the kaon has a low recoil against the dimuon system. The…

hep-ex2013

Measurement of the cross-section for Z->e+e- production in pp collisions at sqrt{s}=7TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +625

A measurement of the cross-section for pp->Z->e+e- is presented using data at sqrt{s}=7TeV corresponding to an integrated luminosity of 0.94 fb^{-1}. The process is measured within…

hep-ex2013

Observation of $B_{s}^{0} \to I ¨ _{c 1} I ¨ $ decay and study of $B^{0} \to I ¨ _{c 1, 2} K^{* 0}$ decays

LHCb collaboration, R. Aaij, B. Adeva +647

The first observation of the decay $B_{s}^{0} \to I ¨ _{c 1} I ¨ $ and a study of $B^{0} \to I ¨ _{c 1, 2} K^{* 0}$ decays are presented. The analysis is performed using a dataset, corre…

hep-ex2013

Study of B0 -> D- pi+ pi- pi+ and B0 -> D- K+ pi- pi+ decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

Using proton-proton collision data collected by the LHCb experiment at sqrt(s) = 7 TeV, corresponding to an integrated luminosity of 1.0 fb^{-1}, the ratio of branching fractions o…

hep-ex2013

Search for the decay Bs -> D*-+ Ï+-

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

A search for the decay Bs -> D*-+ Ï+- is presented using a data sample corresponding to an integrated luminosity of 1.0 fb-1 of pp collisions collected by LHCb. This decay is expe…

hep-ex2013

Measurement of CP violation in the phase space of $B^{\pm} \to K^{\pm} I ¨ ^{+} I ¨ ^{-}$ and $B^{\pm} \to K^{\pm} K^{+} K^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +647

The charmless decays $B^{\pm} \to K^{\pm} I ¨ ^{+} I ¨ ^{-}$ and $B^{\pm} \to K^{\pm} K^{+} K^{-}$ are reconstructed using data, corresponding to an integrated luminosity of 1.0 fb $^{- 1}$ , collected…

hep-ex2014

Measurements of $B_{c}^{+}$ production and mass with the $B_{c}^{+} \to J / I ¨ I ¨ ^{+}$ decay

LHCb collaboration, R. Aaij, C. Abellan Beteta +617

Measurements of $B_{c}^{+}$ production and mass are performed with the decay mode $B_{c}^{+} \to J / I ¨ I ¨ ^{+}$ using 0.37 fb $^{- 1}$ of data collected in $pp$ collisions at $s = 7$ TeV by…

hep-ex2013

Study of $D_{J}$ meson decays to $D^{+} I ¨ ^{-}$ , $D^{0} I ¨ ^{+}$ and $D^{*+} I ¨ ^{-}$ final states in pp collision

LHCb collaboration, R. Aaij, B. Adeva +648

A study of $D^{+} I ¨ ^{-}$ , $D^{0} I ¨ ^{+}$ and $D^{*+} I ¨ ^{-}$ final states is performed using pp collision data, corresponding to an integrated luminosity of 1.0 $f b^{- 1}$ , collected at a cent…

hep-ex2013

Measurement of the polarisation amplitudes in B0 -> J/psi K*(892)0 decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +632

An analysis of the decay B0 -> J/psi K*(892)0 is presented using data, corresponding to an integrated luminosity of 1.0fb^-1, collected in pp collisions at a centre-of-mass energy…

hep-ex2015

Quantum numbers of the $X (3872)$ state and orbital angular momentum in its $I ¨ ^{0} J I ¨ $ decay

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

Angular correlations in $B^{+} \to X (3872) K^{+}$ decays, with $X (3872) \to I ¨ ^{0} J / I ¨ $ , $I ¨ ^{0} \to I ¨ ^{+} I ¨ ^{-}$ and $J / I ¨ \to I^¼^{+} I^¼^{-}$ , are used to measure orbital angular momentum contribution…

hep-ex2013

Measurement of the forward energy flow in pp collisions at sqrt(s)=7 TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +628

The energy flow created in pp collisions at sqrt(s)=7 TeV is studied within the pseudorapidity range 1.9<eta<4.9 with data collected by the LHCb experiment. The measurements are pe…

hep-ex2013

Implications of LHCb measurements and future prospects

LHCb collaboration, A. Bharucha, I. I. Bigi +763

During 2011 the LHCb experiment at CERN collected 1.0 fb-1 of sqrt{s} = 7 TeV pp collisions. Due to the large heavy quark production cross-sections, these data provide unprecedente…

hep-ex2013

Observation of $B_{c}^{+} \to J / I ¨ D_{s}^{+}$ and $B_{c}^{+} \to J / I ¨ D_{s}^{*+}$ decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +623

The decays $B_{c}^{+} \to J / I ¨ D_{s}^{+}$ and $B_{c}^{+} \to J / I ¨ D_{s}^{*+}$ are observed for the first time using a dataset, corresponding to an integrated luminosity of 3$fb^{-1…

hep-ex2013

Study of $B_{(s)}^{0} \to K_{S}^{0} h^{+} h^{' -}$ decays with first observation of $B_{s}^{0} \to K_{S}^{0} K^{\pm} I ¨ ^{\mp}$ and $B_{s}^{0} \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$

LHCb collaboration, R. Aaij, B. Adeva +657

A search for charmless three-body decays of $B^{0}$ and $B_{s}^{0}$ mesons with a $K_{S}^{0}$ meson in the final state is performed using the $pp$ collision data, corresponding to an…

hep-ex2013

Search for the lepton-flavour violating decays $B_{s}^{0} \to e^{\pm} I^¼^{\mp}$ and $B^{0} \to e^{\pm} I^¼^{\mp}$

LHCb collaboration, R. Aaij, B. Adeva +650

A search for the lepton-flavour violating decays $B_{s}^{0} \to e^{\pm} I^¼^{\mp}$ and $B^{0} \to e^{\pm} I^¼^{\mp}$ is performed with a data sample, corresponding to an integrated luminos…

hep-ex2013

Measurement of the branching fractions of the decays Bs -> D0bar K- Ï+ and B0 -> D0bar K+ Ï-

LHCb collaboration, R. Aaij, C. Abellan Beteta +631

The first observation of the decay Bs -> D0bar K- Ï+ is reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0 fb-1 of pp collisions, c…

hep-ex2013

Observations of $B_{s}^{0} \to I ¨ (2 S) I^\cdot$ and $B_{(s)}^{0} \to I ¨ (2 S) I ¨ ^{+} I ¨ ^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +620

First observations of the $B_{s}^{0} \to I ¨ (2 S) I^\cdot$ , $B^{0} \to I ¨ (2 S) I ¨ ^{+} I ¨ ^{-}$ and $B_{s}^{0} \to I ¨ (2 S) I ¨ ^{+} I ¨ ^{-}$ decays are made using a dataset corresponding t…

hep-ex2013

Measurement of CP observables in B0 -> D K*0 with D -> K+ K-

LHCb collaboration, R. Aaij, C. Abellan Beteta +625

The decay B0 -> D K*0 and the charge conjugate mode are studied using 1.0fb-1 of pp collision data collected by the LHCb experiment at sqrt(s) = 7TeV in 2011. The CP asymmetry betw…

hep-ex2013

Differential branching fraction and angular analysis of the decay $B^{0} \to K^{* 0} I^¼^{+} I^¼^{-}$

LHCb collaboration, R. Aaij, C. Abellan Beteta +631

The angular distribution and differential branching fraction of the decay $B^{0} \to K^{* 0} I^¼^{+} I^¼^{-}$ are studied using a data sample, collected by the LHCb experiment in $pp$ …

hep-ex2013

Measurement of J/psi production in pp collisions at sqrt(s)=2.76 TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +624

The production of J/psi mesons is studied with the LHCb detector using data from pp collisions at sqrt(s)=2.76 TeV corresponding to an integrated luminosity of 71 nb^-1. The differ…

hep-ex2013

Search for CP violation in D+ -> phi pi+ and Ds+ -> Ks pi+ decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

A search for CP violation in D+ -> phi pi+ decays is performed using data collected in 2011 by the LHCb experiment corresponding to an integrated luminosity of 1.0 fb^{-1} at a cen…

hep-ex2013

First evidence for the annihilation decay mode $B^{+} \to D_{s}^{+} I ¨ $

LHCb collaboration, R. Aaij, C. Abellan Beteta +617

Evidence for the hadronic annihilation decay mode $B^{+} \to D_{s}^{+} I ¨ $ is found with greater than $3 I ¨ $ significance. The branching fraction and \CP asymmetry are measured to be \…

hep-ex2013

Measurement of $J / I ¨ $ polarization in $pp$ collisions at $s = 7$ TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +627

An angular analysis of the decay $J / I ¨ \to I^¼^{+} I^¼^{-}$ is performed to measure the polarization of prompt $J / I ¨ $ mesons produced in $pp$ collisions at $\sqrt{s}=7\; \math…

hep-ex2013

Observation of D0-D0bar oscillations

LHCb collaboration, R. Aaij, C. Abellan Beteta +616

We report a measurement of the time-dependent ratio of D0->K+pi- to D0->K-pi+ decay rates in D*+-tagged events using 1.0 fb^{-1} of integrated luminosity recorded by the LHCb exper…

hep-ex2013

Search for the rare decay $D^{0} \to I^¼^{+} I^¼^{-}$

LHCb collaboration, R. Aaij, C. Abellan Beteta +634

A search for the rare decay $D^{0} \to I^¼^{+} I^¼^{-}$ is performed using a data sample, corresponding to an integrated luminosity of 0.9 fb $^{- 1}$ , of $pp$ collisions collected at a centr…

hep-ex2013

Prompt charm production in pp collisions at sqrt(s)=7 TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

Charm production at the LHC in pp collisions at sqrt(s)=7 TeV is studied with the LHCb detector. The decays D0 -> K- pi+, D+ -> K- pi+ pi+, D*+ -> D0(K- pi+) pi+, D_s+ -> phi(K- K+…

hep-ex2013

Measurement of the Î_b^0, Î_b^- and Î©_b^- baryon masses

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

Bottom baryons decaying to a J/Ï meson and a hyperon are reconstructed using 1.0 fb^{-1} of data collected in 2011 with the LHCb detector. Significant Î_b^0 \rightarrow J/ÏÎ, Î…

hep-ex2013

Measurements of the Lambda_b0 -> J/psi Lambda decay amplitudes and the Lambda_b0 polarisation in pp collisions at sqrt(s) = 7 TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

An angular analysis of Lambda_b0 -> J/psi Lambda decays is performed using a data sample corresponding to 1.0 fb^{-1} collected in pp collisions at sqrt(s) = 7 TeV with the LHCb de…

hep-ex2013

Observation of the decay $B_{s}^{0} \to D ˉ^{0} I ¨ $

The LHCb collaboration, R. Aaij, B. Adeva +655

First observation of the decay Bs -> D0bar phi is reported using pp collision data, corresponding to an integrated luminosity of 1.0 fb^-1, collected by the LHCb experiment at a ce…

hep-ex2012

Evidence for the decay $B^{0} \to J / I ¨ I ¨ $ and measurement of the relative branching fractions of $B_{s}^{0}$ meson decays to $J / I ¨ I^\cdot$ and $J / I ¨ I^\cdot^{^{'}}$

LHCb Collaboration, R. Aaij, C. Abellan Beteta +620

First evidence of the $B^{0} \to J / I ¨ I ¨ $ decay is found and the $B_{s}^{0} \to J / I ¨ I^\cdot$ and $B_{s}^{0} \to J / I ¨ I^\cdot^{'}$ decays are studied using a dataset corresponding to an integrated…

hep-ex2013

Amplitude analysis and branching fraction measurement of Bs->J/ÏK+K-

LHCb collaboration, R. Aaij, C. Abellan Beteta +625

An amplitude analysis of the final state structure in the Bs->J/ÏK+K- decay mode is performed using 1.0/fb of data collected by the LHCb experiment in 7 TeV center-of-mass energy…

hep-ex2014

Measurement of the flavour-specific CP-violating asymmetry $a_{sl}^{s}$ in $B_{s}^{0}$ decays

LHCb collaboration, R. Aaij, B. Adeva +655

The CP-violating asymmetry a_{sl}^s is studied using semileptonic decays of Bs and anti-Bs mesons produced in pp collisions at a centre-of-mass energy of 7 TeV at the LHC, exploiti…

hep-ex2012

First observation of the decays $B ˉ_{(s)}^{0} \to D_{s}^{+} K^{-} I ¨ ^{+} I ¨ ^{-}$ and $B ˉ_{s}^{0} \to D_{s 1} (2536)^{+} I ¨ ^{-}$

LHCb collaboration, R. Aaij, C. Abellan Beteta +621

The first observation of the decays $B ˉ_{s}^{0} \to D_{s}^{+} K^{-} I ¨ ^{+} I ¨ ^{-}$ and $B ˉ^{0} \to D_{s}^{+} K^{-} I ¨ ^{+} I ¨ ^{-}$ are reported using an integrated luminosity of 1.0 fb $^{- 1}$ recorded by…

hep-ex2012

A study of the $Z$ production cross-section in $pp$ collisions at $s = 7$ TeV using tau final states

The LHCb collaboration, R. Aaij, C. Abellan Beteta +621

A measurement of the inclusive $Z \to I ¨ I ¨ $ cross-section in $pp$ collisions at $s = 7$ TeV is presented based on a dataset of 1.0 fb $^{- 1}$ collected by the LHCb detector.…

hep-ex2013

First evidence for the two-body charmless baryonic decay $B^{0} \to p p ˉ$

LHCb collaboration, R. Aaij, B. Adeva +657

The results of a search for the rare two-body charmless baryonic decays $B^{0} \to p p ˉ$ and $B_{s}^{0} \to p p ˉ$ are reported. The analysis uses a data sample, corresponding t…

hep-ex2013

Determination of the X(3872) meson quantum numbers

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

The quantum numbers of the X(3872) meson are determined to be JPC = 1++ based on angular correlations in B+ to X(3872) K+ decays, where X(3872) to pi+pi- J/psi and J/psi to Î¼+Î¼-.…

hep-ex2009

An Improved Limit on the Muon Electric Dipole Moment

G. W. Bennett, B. Bousquet, H. N. Brown +73

Three independent searches for an electric dipole moment (EDM) of the positive and negative muons have been performed, using spin precession data from the muon g-2 storage ring at…

hep-ex2013

First observation of the decay $B_{s}^{0} \to I ¨ K ˉ^{* 0}$

LHCb collaboration, R. Aaij, C. Abellan Beteta +626

The first observation of the decay $B_{s}^{0} \to I ¨ K ˉ^{* 0}$ is reported. The analysis is based on a data sample corresponding to an integrated luminosity of 1.0 fb $^{- 1}$ …

hep-ex2013

Studies of the decays $B^{+} \to p p ˉ h^{+}$ and observation of $B^{+} \to I^ ˉ (1520) p$

LHCb collaboration, R. Aaij, B. Adeva +652

Dynamics and direct $C A^¶$ violation in three-body charmless decays of charged $B$ mesons to a proton, an antiproton and a light meson (pion or kaon) are studied using data, corresp…

hep-ex2013

First observation of CP violation in the decays of Bs mesons

LHCb collaboration, R. Aaij, C. Abellan Beteta +631

Using pp collision data, corresponding to an integrated luminosity of $1.0 fb^{- 1}$ , collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measureme…

hep-ex2013

Measurement of the $B^{0} \to K^{* 0} e^{+} e^{-}$ branching fraction at low dilepton mass

LHCb collaboration, R. Aaij, C. Abellan Beteta +623

The branching fraction of the rate decay $B^{0} \to K^{* 0} e^{+} e^{-}$ in the dilepton mass region from 30 to 1000 MeV $/ c^{2}$ has been measured by the LHCb experiment, using $pp$ c…

hep-ex2013

Measurement of CP violation and the B_s^0 meson decay width difference with B_s^0\to J/ÏK^+ K^- and B_s^0\to J/ÏÏ^+Ï^- decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +620

The time-dependent CP asymmetry in B_s^0\to J/ÏK^+K^- decays is measured using $pp$ collision data at \sqrt{s}=7TeV, corresponding to an integrated luminosity of 1.0fb^-1, collect…

hep-ex2013

First observations of $B ˉ_{s}^{0} \to D^{+} D^{-}$ , $D_{s}^{+} D^{-}$ and $D^{0} D ˉ^{0}$ decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

First observations and measurements of the branching fractions of the $B ˉ_{s}^{0} \to D^{+} D^{-}$ , $B ˉ_{s}^{0} \to D_{s}^{+} D^{-}$ and $B ˉ_{s}^{0} \to D^{0} D ˉ^{0}$ decays are presented usin…

hep-ex2013

Measurement of the differential branching fraction of the decay $I^_{b}^{0} \to I^ I^¼^{+} I^¼^{-}$

LHCb collaboration, R. Aaij, B. Adeva +650

The differential branching fraction of the decay $I^_{b}^{0} \to I^ I^¼^{+} I^¼^{-}$ is measured as a function of the square of the dimuon invariant mass, $q^{2}$ . A yield of $78 \pm 12$ $Î…

hep-ex2012

Measurement of the D+/- production asymmetry in 7 TeV pp collisions

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

The asymmetry in the production cross-section Ïof D+/- mesons, A_P = (Ï(D+) - Ï(D-))/(Ï(D+) + Ï(D-)), is measured in bins of pseudorapidity Î·and transverse momentum p_T withi…

hep-ex2013

Measurement of B meson production cross-sections in proton-proton collisions at sqrt(s)= 7 TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +625

The production cross-sections of B mesons are measured in pp collisions at a centre-of-mass energy of 7 TeV, using data collected with the LHCb detector corresponding to a integrat…

hep-ex2012

Differential branching fraction and angular analysis of the $B^{+} \to K^{+} I^¼^{+} I^¼^{-}$ decay

LHCb collaboration, R. Aaij, C. Abellan Beteta +617

The angular distribution and differential branching fraction of the decay $B^{+} \to K^{+} I^¼^{+} I^¼^{-}$ are studied with a dataset corresponding to $1.0 fb^{- 1}$ …

hep-ex2013

Observation of the decay $B_{c}^{+} \to I ¨ (2 S) I ¨ ^{+}$

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

The decay $B_{c}^{+} \to I ¨ (2 S) I ¨ ^{+}$ with $I ¨ (2 S) \to I^¼^{+} I^¼^{-}$ is observed with a significance of $5.2 I ¨ $ using $pp$ collision data corresponding to an integrated luminosity of $1.0…

hep-ex2013

Model-independent search for CP violation in D0 to K-K+pi-pi+ and D0 to pi-pi+pi+pi- decays

LHCb collaboration, R. Aaij, B. Adeva +657

A search for CP violation in the phase-space structures of D0 and D0bar decays to the final states K-K+pi-pi+ and pi-pi+pi+pi- is presented. The search is carried out with a data s…

hep-ex2013

Search for D+(s) to pi+ mu+ mu- and D+(s) to pi- mu+ mu+ decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +621

A search for non-resonant D+(s) to pi+mu+mu- and D+(s) to pi-mu+mu+ decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 1.0 fb-1, a…

hep-ex2013

First observation of the decay $B_{c}^{+} \to J / I ¨ K^{+}$

LHCb collaboration, R. Aaij, C. Abellan Beteta +632

The decay $B_{c}^{+} \to J / I ¨ K^{+}$ is observed for the first time using a data sample, corresponding to an integrated luminosity of 1.0 $f b^{- 1}$ , collected by the LHCb experiment in…

hep-ex2013

Measurement of the CKM angle gamma from a combination of B->Dh analyses

LHCb collaboration, R. Aaij, C. Abellan Beteta +633

A combination of three LHCb measurements of the CKM angle gamma is presented. The decays B->DK and B->Dpi are used, where D denotes an admixture of D0 and D0-bar mesons, decaying i…

hep-ex2013

First measurement of the CP-violating phase in $B_{s}^{0} \to I ¨ I ¨ $ decays

The LHCb collaboration, R. Aaij, C. Abellan Beteta +621

A first flavour-tagged measurement of the time-dependent CP-violating asymmetry in $B_{s}^{0} \to I ¨ I ¨ $ decays is presented. In this decay channel, the CP-violating weak phase arises d…

hep-ex2012

A model-independent Dalitz plot analysis of $B^{\pm} \to D K^{\pm}$ with $D \to K_{S}^{0} h^{+} h^{-}$ ( $h = I ¨ , K$ ) decays and constraints on the CKM angle $I^^{3}$

LHCb collaboration, R. Aaij, C. Abellan Beteta +617

A binned Dalitz plot analysis of $B^{\pm} \to D K^{\pm}$ decays, with $D \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$ and $D \to K_{S}^{0} K^{+} K^{-}$ , is performed to measure the CP-violating observables…

hep-ex2013

Measurement of the $B^{0}$ -- $B ˉ^{0}$ oscillation frequency $I^ m_{d}$ with the decays $B^{0} \to D^{-} I ¨ ^{+}$ and $B^{0} \to J / I ¨ K^{* 0}$

LHCb collaboration, R. Aaij, C. Abellan Beteta +621

The $B^{0}$ -- $B ˉ^{0}$ oscillation frequency $I^ m_{d}$ is measured by the LHCb experiment using a dataset corresponding to an integrated luminosity of $1.0$ fb $^{- 1}$ of proton-proto…

hep-ex2013

Measurement of the effective B_s^0 -> J/Ï K_S^0 lifetime

LHCb collaboration, R. Aaij, C. Abellan Beteta +630

This paper reports the first measurement of the effective B_s^0 -> J/Ï K_S^0 lifetime and an updated measurement of its time-integrated branching fraction. Both measurements are p…

hep-ex2018

Measurement of the relative rate of prompt $I ¨ _{c 0}$ , $I ¨ _{c 1}$ and $I ¨ _{c 2}$ production at $s = 7$ TeV

LHCb collaboration, R. Aaij, B. Adeva +648

Prompt production of charmonium $I ¨ _{c 0}$ , $I ¨ _{c 1}$ and $I ¨ _{c 2}$ mesons is studied using proton-proton collisions at the LHC at a centre-of-mass energy of $s = 7$ TeV. The $Ï…

hep-ex2013

Observation of $B_{s}^{0}$ - $B ˉ_{s}^{0}$ mixing and measurement of mixing frequencies using semileptonic B decays

LHCb collaboration, R. Aaij, B. Adeva +657

The $B_{s}^{0}$ and $B^{0}$ mixing frequencies, $I^ m_{s}$ and $I^ m_{d}$ , are measured using a data sample corresponding to an integrated luminosity of 1.0 fb^{-1} collected by the LHCb exper…

hep-ex2014

Searches for $B_{(s)}^{0} \to J / I ¨ p p$ and $B^{+} \to J / I ¨ p p I ¨ ^{+}$ decays

LHCb collaboration, R. Aaij, B. Adeva +650

The results of searches for $B_{(s)}^{0} \to J / I ¨ p p$ and $B^{+} \to J / I ¨ p p I ¨ ^{+}$ decays are reported. The analysis is based on a data sample, co…

hep-ex2013

Branching fraction and CP asymmetry of the decays $B^{+} \to K_{S}^{0} I ¨ ^{+}$ and $B^{+} \to K_{S}^{0} K^{+}$

LHCb collaboration, R. Aaij, B. Adeva +655

An analysis of $B^{+} \to K_{S}^{0} I ¨ ^{+}$ and $B^{+} \to K_{S}^{0} K^{+}$ decays is performed with the LHCb experiment. The $pp$ collision data…

Publications (82)

First measurement of time-dependent CP violation in Bs -> K+K- decays

Measurement of the CA^¶ asymmetry in B+→K+I^¼+I^¼− decays

Precision measurement of the Bs0​-Bˉs0​ oscillation frequency with the decay $B^{0}_{s}\rightarrowD^{-}_{s}Ï^{+}$

Search for the rare decay KS -> mu+ mu-

Search for rare B(s)0​→I^¼+I^¼−I^¼+I^¼− decays

Differential branching fraction and angular analysis of the decay Bs0​→I¨I^¼+I^¼−

Search for direct CP violation in D0 -> h- h+ modes using semileptonic B decays

Measurement of the fragmentation fraction ratio fs​/fd​ and its dependence on B meson kinematics

Precision measurement of the Lambda_b baryon lifetime

Measurement of the CP asymmetry in B0 -> K*0 mu+ mu- decays

Production of J/psi and Upsilon mesons in pp collisions at sqrt(s) = 8 TeV

Measurement of the time-dependent CP asymmetry in B0 -> J/Ï KS0 decays

Analysis of the resonant components in B0->J/Ïpi+pi-

Observation of the suppressed ADS modes B±→[I¨±K∓I¨+I¨−]D​K± and B±→[I¨±K∓I¨+I¨−]D​I¨±

First observation of the decay Bs2∗​(5840)0→B∗+K− and studies of excited Bs​ mesons

Limits on neutral Higgs boson production in the forward region in pp collisions at s​=7 TeV

Exclusive J/I¨ and I¨(2S) production in pp collisions at s​=7 TeV

Measurement of form-factor independent observables in the decay B0→K∗0I^¼+I^¼−

Measurements of the branching fractions of B+→ppˉ​K+ decays

Searches for violation of lepton flavour and baryon number in tau lepton decays at LHCb

First evidence for the decay Bs -> mu+ mu-

Present status and first results of the final focus beam line at the KEK Accelerator Test Facility

Observation of a resonance in B+→K+I^¼+I^¼− decays at low recoil

Measurement of the cross-section for Z->e+e- production in pp collisions at sqrt{s}=7TeV

Observation of Bs0​→I¨c1​I¨ decay and study of B0→I¨c1,2​K∗0 decays

Study of B0 -> D*- pi+ pi- pi+ and B0 -> D*- K+ pi- pi+ decays

Search for the decay Bs -> D*-+ Ï+-

Measurement of CP violation in the phase space of B±→K±I¨+I¨− and B±→K±K+K− decays

Measurements of Bc+​ production and mass with the Bc+​→J/I¨I¨+ decay

Study of DJ​ meson decays to D+I¨−, D0I¨+ and D∗+I¨− final states in pp collision

Measurement of the polarisation amplitudes in B0 -> J/psi K*(892)0 decays

Quantum numbers of the X(3872) state and orbital angular momentum in its I¨0JI¨ decay

Measurement of the forward energy flow in pp collisions at sqrt(s)=7 TeV

Implications of LHCb measurements and future prospects

Observation of Bc+​→J/I¨Ds+​ and Bc+​→J/I¨Ds∗+​ decays

Study of B(s)0​→KS0​h+h′− decays with first observation of Bs0​→KS0​K±I¨∓ and Bs0​→KS0​I¨+I¨−

Search for the lepton-flavour violating decays Bs0​→e±I^¼∓ and B0→e±I^¼∓

Measurement of the branching fractions of the decays Bs -> D0bar K- Ï+ and B0 -> D0bar K+ Ï-

Observations of Bs0​→I¨(2S)I^⋅ and B(s)0​→I¨(2S)I¨+I¨− decays

Measurement of CP observables in B0 -> D K*0 with D -> K+ K-

Differential branching fraction and angular analysis of the decay B0→K∗0I^¼+I^¼−

Measurement of J/psi production in pp collisions at sqrt(s)=2.76 TeV

Search for CP violation in D+ -> phi pi+ and Ds+ -> Ks pi+ decays

First evidence for the annihilation decay mode B+→Ds+​I¨

Measurement of J/I¨ polarization in pp collisions at s​=7 TeV

Observation of D0-D0bar oscillations

Search for the rare decay D0→I^¼+I^¼−

Prompt charm production in pp collisions at sqrt(s)=7 TeV

Measurement of the Î_b^0, Î_b^- and Î©_b^- baryon masses

Measurements of the Lambda_b0 -> J/psi Lambda decay amplitudes and the Lambda_b0 polarisation in pp collisions at sqrt(s) = 7 TeV

Observation of the decay Bs0​→Dˉ0I¨

Evidence for the decay B0→J/I¨I¨ and measurement of the relative branching fractions of Bs0​ meson decays to J/I¨I^⋅ and J/I¨I^⋅′

Amplitude analysis and branching fraction measurement of Bs->J/ÏK+K-

Measurement of the flavour-specific CP-violating asymmetry asls​ in Bs0​ decays

First observation of the decays Bˉ(s)0​→Ds+​K−I¨+I¨− and Bˉs0​→Ds1​(2536)+I¨−

A study of the Z production cross-section in pp collisions at s​=7 TeV using tau final states

First evidence for the two-body charmless baryonic decay B0→ppˉ​

Determination of the X(3872) meson quantum numbers

An Improved Limit on the Muon Electric Dipole Moment

First observation of the decay Bs0​→I¨Kˉ∗0

Studies of the decays B+→ppˉ​h+ and observation of B+→I^ˉ(1520)p

First observation of CP violation in the decays of Bs mesons

Measurement of the B0→K∗0e+e− branching fraction at low dilepton mass

Measurement of CP violation and the B_s^0 meson decay width difference with B_s^0\to J/ÏK^+ K^- and B_s^0\to J/ÏÏ^+Ï^- decays

First observations of Bˉs0​→D+D−, Ds+​D− and D0Dˉ0 decays

Measurement of the differential branching fraction of the decay I^b0​→I^I^¼+I^¼−

Measurement of the D+/- production asymmetry in 7 TeV pp collisions

Measurement of B meson production cross-sections in proton-proton collisions at sqrt(s)= 7 TeV

Differential branching fraction and angular analysis of the B+→K+I^¼+I^¼− decay

Observation of the decay Bc+​→I¨(2S)I¨+

Model-independent search for CP violation in D0 to K-K+pi-pi+ and D0 to pi-pi+pi+pi- decays

Search for D+(s) to pi+ mu+ mu- and D+(s) to pi- mu+ mu+ decays

First observation of the decay Bc+​→J/I¨K+

Measurement of the CKM angle gamma from a combination of B->Dh analyses

First measurement of the CP-violating phase in Bs0​→I¨I¨ decays

A model-independent Dalitz plot analysis of B±→DK± with D→KS0​h+h− (h=I¨,K) decays and constraints on the CKM angle I^3

Measurement of the B0--Bˉ0 oscillation frequency I^md​ with the decays B0→D−I¨+ and B0→J/I¨K∗0

Measurement of the effective B_s^0 -> J/Ï K_S^0 lifetime

Measurement of the relative rate of prompt I¨c0​, I¨c1​ and I¨c2​ production at s​=7TeV

Measurement of the $C A^¶$ asymmetry in $B^{+} \to K^{+} I^¼^{+} I^¼^{-}$ decays

Precision measurement of the $B_{s}^{0}$ - $B ˉ_{s}^{0}$ oscillation frequency with the decay $B^{0}_{s}\rightarrowD^{-}_{s}Ï^{+}$

Search for rare $B_{(s)}^{0} \to I^¼^{+} I^¼^{-} I^¼^{+} I^¼^{-}$ decays

Differential branching fraction and angular analysis of the decay $B_{s}^{0} \to I ¨ I^¼^{+} I^¼^{-}$

Measurement of the fragmentation fraction ratio $f_{s} / f_{d}$ and its dependence on $B$ meson kinematics

Measurement of the time-dependent CP asymmetry in B0 -> J/Ï KS0 decays

Analysis of the resonant components in B0->J/Ïpi+pi-

Observation of the suppressed ADS modes $B^{\pm} \to [I ¨ ^{\pm} K^{\mp} I ¨ ^{+} I ¨ ^{-}]_{D} K^{\pm}$ and $B^{\pm} \to [I ¨ ^{\pm} K^{\mp} I ¨ ^{+} I ¨ ^{-}]_{D} I ¨ ^{\pm}$

First observation of the decay $B_{s 2}^{} (5840)^{0} \to B^{+} K^{-}$ and studies of excited $B_{s}$ mesons

Limits on neutral Higgs boson production in the forward region in $pp$ collisions at $s = 7$ TeV

Exclusive $J / I ¨ $ and $I ¨ (2 S)$ production in $pp$ collisions at $s = 7$ TeV

Measurement of form-factor independent observables in the decay $B^{0} \to K^{* 0} I^¼^{+} I^¼^{-}$

Measurements of the branching fractions of $B^{+} \to p p ˉ K^{+}$ decays

Observation of a resonance in $B^{+} \to K^{+} I^¼^{+} I^¼^{-}$ decays at low recoil

Observation of $B_{s}^{0} \to I ¨ _{c 1} I ¨ $ decay and study of $B^{0} \to I ¨ _{c 1, 2} K^{* 0}$ decays

Study of B0 -> D- pi+ pi- pi+ and B0 -> D- K+ pi- pi+ decays

Search for the decay Bs -> D*-+ Ï+-

Measurement of CP violation in the phase space of $B^{\pm} \to K^{\pm} I ¨ ^{+} I ¨ ^{-}$ and $B^{\pm} \to K^{\pm} K^{+} K^{-}$ decays

Measurements of $B_{c}^{+}$ production and mass with the $B_{c}^{+} \to J / I ¨ I ¨ ^{+}$ decay

Study of $D_{J}$ meson decays to $D^{+} I ¨ ^{-}$ , $D^{0} I ¨ ^{+}$ and $D^{*+} I ¨ ^{-}$ final states in pp collision

Quantum numbers of the $X (3872)$ state and orbital angular momentum in its $I ¨ ^{0} J I ¨ $ decay

Observation of $B_{c}^{+} \to J / I ¨ D_{s}^{+}$ and $B_{c}^{+} \to J / I ¨ D_{s}^{*+}$ decays

Study of $B_{(s)}^{0} \to K_{S}^{0} h^{+} h^{' -}$ decays with first observation of $B_{s}^{0} \to K_{S}^{0} K^{\pm} I ¨ ^{\mp}$ and $B_{s}^{0} \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$

Search for the lepton-flavour violating decays $B_{s}^{0} \to e^{\pm} I^¼^{\mp}$ and $B^{0} \to e^{\pm} I^¼^{\mp}$

Measurement of the branching fractions of the decays Bs -> D0bar K- Ï+ and B0 -> D0bar K+ Ï-

Observations of $B_{s}^{0} \to I ¨ (2 S) I^\cdot$ and $B_{(s)}^{0} \to I ¨ (2 S) I ¨ ^{+} I ¨ ^{-}$ decays

Differential branching fraction and angular analysis of the decay $B^{0} \to K^{* 0} I^¼^{+} I^¼^{-}$

First evidence for the annihilation decay mode $B^{+} \to D_{s}^{+} I ¨ $

Measurement of $J / I ¨ $ polarization in $pp$ collisions at $s = 7$ TeV

Search for the rare decay $D^{0} \to I^¼^{+} I^¼^{-}$

Measurement of the Î_b^0, Î_b^- and Î©_b^- baryon masses

Observation of the decay $B_{s}^{0} \to D ˉ^{0} I ¨ $

Evidence for the decay $B^{0} \to J / I ¨ I ¨ $ and measurement of the relative branching fractions of $B_{s}^{0}$ meson decays to $J / I ¨ I^\cdot$ and $J / I ¨ I^\cdot^{^{'}}$

Amplitude analysis and branching fraction measurement of Bs->J/ÏK+K-

Measurement of the flavour-specific CP-violating asymmetry $a_{sl}^{s}$ in $B_{s}^{0}$ decays

First observation of the decays $B ˉ_{(s)}^{0} \to D_{s}^{+} K^{-} I ¨ ^{+} I ¨ ^{-}$ and $B ˉ_{s}^{0} \to D_{s 1} (2536)^{+} I ¨ ^{-}$

A study of the $Z$ production cross-section in $pp$ collisions at $s = 7$ TeV using tau final states

First evidence for the two-body charmless baryonic decay $B^{0} \to p p ˉ$

First observation of the decay $B_{s}^{0} \to I ¨ K ˉ^{* 0}$

Studies of the decays $B^{+} \to p p ˉ h^{+}$ and observation of $B^{+} \to I^ ˉ (1520) p$

Measurement of the $B^{0} \to K^{* 0} e^{+} e^{-}$ branching fraction at low dilepton mass

Measurement of CP violation and the B_s^0 meson decay width difference with B_s^0\to J/ÏK^+ K^- and B_s^0\to J/ÏÏ^+Ï^- decays

First observations of $B ˉ_{s}^{0} \to D^{+} D^{-}$ , $D_{s}^{+} D^{-}$ and $D^{0} D ˉ^{0}$ decays

Measurement of the differential branching fraction of the decay $I^_{b}^{0} \to I^ I^¼^{+} I^¼^{-}$

Differential branching fraction and angular analysis of the $B^{+} \to K^{+} I^¼^{+} I^¼^{-}$ decay

Observation of the decay $B_{c}^{+} \to I ¨ (2 S) I ¨ ^{+}$

First observation of the decay $B_{c}^{+} \to J / I ¨ K^{+}$

First measurement of the CP-violating phase in $B_{s}^{0} \to I ¨ I ¨ $ decays

A model-independent Dalitz plot analysis of $B^{\pm} \to D K^{\pm}$ with $D \to K_{S}^{0} h^{+} h^{-}$ ( $h = I ¨ , K$ ) decays and constraints on the CKM angle $I^^{3}$

Measurement of the $B^{0}$ -- $B ˉ^{0}$ oscillation frequency $I^ m_{d}$ with the decays $B^{0} \to D^{-} I ¨ ^{+}$ and $B^{0} \to J / I ¨ K^{* 0}$

Measurement of the effective B_s^0 -> J/Ï K_S^0 lifetime

Measurement of the relative rate of prompt $I ¨ _{c 0}$ , $I ¨ _{c 1}$ and $I ¨ _{c 2}$ production at $s = 7$ TeV

Observation of $B_{s}^{0}$ - $B ˉ_{s}^{0}$ mixing and measurement of mixing frequencies using semileptonic B decays

Searches for $B_{(s)}^{0} \to J / I ¨ p p$ and $B^{+} \to J / I ¨ p p I ¨ ^{+}$ decays

Branching fraction and CP asymmetry of the decays $B^{+} \to K_{S}^{0} I ¨ ^{+}$ and $B^{+} \to K_{S}^{0} K^{+}$