A. Novoselov

Measurement of polarization amplitudes and CP asymmetries in $B^{0} \to I ¨ K^{*} (892)^{0}$

LHCb collaboration, R. Aaij, A. Abba +692

An angular analysis of the decay $B^{0} \to I ¨ K^{*} (892)^{0}$ is reported based on a $pp$ collision data sample, corresponding to an integrated luminosity of 1.0 fb $^{- 1}$ , collected at…

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…

Measurement of CP violation in $B_{s}^{0} \to I ¨ I ¨ $ decays

LHCb collaboration, R. Aaij, B. Adeva +698

A measurement of the decay time dependent CP-violating asymmetry in $B_{s}^{0} \to I ¨ I ¨ $ decays is presented, along with measurements of the $T$ -odd triple-product asymmetries. In this…

Search for the decay D0 to Ï+ Ï- Î¼+ Î¼-

LHCb collaboration, R. Aaij, B. Adeva +656

A search for the D0 to Ï+ Ï- Î¼+ Î¼- decay, where the muon pair does not originate from a resonance, is performed using proton-proton collision data corresponding to an integrate…

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…

Study of $B^{-} \to D K^{-} I ¨ ^{+} I ¨ ^{-}$ and $B^{-} \to D I ¨ ^{-} I ¨ ^{+} I ¨ ^{-}$ decays and determination of the CKM angle $I^^{3}$

LHCb collaboration, R. Aaij, B. Adeva +716

We report a study of the suppressed $B^{-} \to D K^{-} I ¨ ^{+} I ¨ ^{-}$ and favored $B^{-} \to D I ¨ ^{-} I ¨ ^{+} I ¨ ^{-}$ decays, where the neutral $D$ meson is detected through its decays to the $K^{\mp}Ï^{\…

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…

Measurement of forward $J / I ¨ $ production cross-sections in $pp$ collisions at $s = 13$ TeV

LHCb collaboration, R. Aaij, B. Adeva +722

The production of $J / I ¨ $ mesons in proton-proton collisions at a centre-of-mass energy of $s = 13$ TeV is studied with the \lhcb detector. Cross-section measurements are perfo…

First observation of a baryonic $B_{c}^{+}$ decay

LHCb collaboration, R. Aaij, B. Adeva +699

A baryonic decay of the $B_{c}^{+}$ meson, $B_{c}^{+} \to J / I ¨ p p I ¨ ^{+}$ , is observed for the first time, with a significance of $7.3$ standard deviations, in $pp$ collision data co…

First measurement of the charge asymmetry in beauty-quark pair production at a hadron collider

R. Aaij, B. Adeva, M. Adinolfi +700

The difference in the angular distributions between beauty quarks and antiquarks, referred to as the charge asymmetry, is measured for the first time in $b b ˉ$ pair production…

A model-independent confirmation of the $Z (4430)^{-}$ state

LHCb collaboration, R. Aaij, B. Adeva +723

The decay $B^{0} \to I ¨ (2 S) K^{+} I ¨ ^{-}$ is analyzed using $3 f b^{- 1}$ of $pp$ collision data collected with the LHCb detector. A model-independent description of the $I ¨ (2 S) I ¨ $ mass…

Measurement of the CP-violating phase $I^^{2}$ in $B^{0} \to J / I ¨ I ¨ ^{+} I ¨ ^{-}$ decays and limits on penguin effects

LHCb collaboration, R. Aaij, B. Adeva +697

Time-dependent CP violation is measured in the $B^{0} \to J / I ¨ I ¨ ^{+} I ¨ ^{-}$ channel for each $I ¨ ^{+} I ¨ ^{-}$ resonant final state using data collected with an integrated luminosity of…

Measurement of CP asymmetry in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays

LHCb collaboration, R. Aaij, B. Adeva +698

We report on measurements of the time-dependent CP violating observables in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays using a dataset corresponding to 1.0 fb $^{- 1}$ of pp collisi…

First observation of the decays B0bar -->D+ K- pi+ pi- and B- --> D0 K- pi+ pi-

LHCb Collaboration, R. Aaij, C. Abellan Beteta +586

First observations of the Cabibbo suppressed decays B0bar -->D+ K- pi+ pi- and B- --> D0 K- pi+ pi- are reported using 35 pb^{-1} of data collected with the LHCb detector. Their br…

First observation of the decay $B^0_s \rightarrow K^{0} \bar{K]^{0}$

LHCb Collaboration, R. Aaij, C. Abellan Beteta +584

The first observation of the decay $\kstarkstar$ is reported using 35\invpb of data collected by LHCb in proton-proton collisions at a centre-of-mass energy of 7 TeV. A total of $4…

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

LHCb collaboration, R. Aaij, C. Abellan Beteta +605

Heavy quark production in 7 TeV centre-of-mass energy pp collisions at the LHC is not necessarily flavour symmetric. The production asymmetry, A_P, between Ds+ and Ds- mesons is st…

Angular analysis of the $B^{0} \to K^{* 0} e^{+} e^{-}$ decay in the low- $q^{2}$ region

LHCb collaboration, R. Aaij, B. Adeva +703

An angular analysis of the $B^{0} \to K^{* 0} e^{+} e^{-}$ decay is performed using a data sample, corresponding to an integrated luminosity of 3.0 ${\mbox{fb}^{-1}}$, collected b…

Evidence for the decay $B_{c}^{+} \to J / I ¨ 3 I ¨ ^{+} 2 I ¨ ^{-}$

LHCb collaboration, R. Aaij, B. Adeva +686

Evidence is presented for the decay $B_{c} + \to J / I ¨ 3 I ¨ ^{+} 2 I ¨ ^{-}$ using proton-proton collision data, corresponding to an integrated luminosity of 3fb $^{- 1}$ , collected with the…

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…

Measurement of $C P$ violation in $B^{0} \to J / I ¨ K_{S}^{0}$ decays

LHCb collaboration, R. Aaij, B. Adeva +704

Measurements are presented of the $C P$ violation observables $S$ and $C$ in the decays of $B^{0}$ and $B^{0}$ mesons to the $J / I ¨ K_{S}^{0}$ final state. The data sample corres…

Amplitude analysis of $B^{-} \to D^{+} I ¨ ^{-} I ¨ ^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +763

The Dalitz plot analysis technique is used to study the resonant substructures of $B^{-} \to D^{+} I ¨ ^{-} I ¨ ^{-}$ decays in a data sample corresponding to 3.0 $fb^{- 1}$ of $p…

Measurement of the B0bar-B0 and Bsbar-Bs production asymmetries in pp collisions at sqrt(s)=7 TeV

LHCb collaboration, R. Aaij, B. Adeva +700

The B0bar-B0 and Bsbar-Bs production asymmetries, AP(B0) and AP(Bs), are measured by means of a time-dependent analysis of B0 -> J/ÏK*0, B0 -> D- pi+ and Bs -> Ds- pi+ decays, usi…

Model-independent measurement of the CKM angle $I^^{3}$ using $B^{0} \to D K^{* 0}$ decays with $D \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$ and $K_{S}^{0} K^{+} K^{-}$

R. Aaij, C. AbellÃ¡n Beteta, B. Adeva +727

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

Measurement of forward $t t$ , $W + b b$ and $W + c c$ production in $pp$ collisions at $s = 8$ TeV

LHCb collaboration, R. Aaij, B. Adeva +767

The production of $t t$ , $W + b b$ and $W + c c$ is studied in the forward region of proton-proton collisions collected at a centre-of-mass energy of 8 Te…

hep-ex2018

Observation of the $I^_{b}^{0} \to I^ I ¨ $ decay

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +730

The $I^_{b}^{0} \to I^ I ¨ $ decay is observed using data corresponding to an integrated luminosity of 3.0fb $^{- 1}$ recorded by the LHCb experiment. The decay proceeds at leading order via…

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…

Model-independent measurement of mixing parameters in $D^{0} \to K_{S} I ¨ ^{+} I ¨ ^{-}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +724

The first model-independent measurement of the charm mixing parameters in the decay $D^{0} \to K_{S} I ¨ ^{+} I ¨ ^{-}$ is reported, using a sample of $pp$ collision data recorded by the LHCb…

Observation of excited Lambda_b0 baryons

LHCb collaboration, R. Aaij, C. Abellan Beteta +615

Using pp collision data corresponding to 1.0 fb-1 integrated luminosity collected by the LHCb detector, two narrow states are observed in the Lambda_b0pi+pi- spectrum with masses 5…

Study of the rare $B_{s}^{0}$ and $B^{0}$ decays into the $I ¨ ^{+} I ¨ ^{-} I^¼^{+} I^¼^{-}$ final state

LHCb collaboration, R. Aaij, B. Adeva +699

A search for the rare decays $B_{s}^{0} \to I ¨ ^{+} I ¨ ^{-} I^¼^{+} I^¼^{-}$ and $B^{0} \to I ¨ ^{+} I ¨ ^{-} I^¼^{+} I^¼^{-}$ is performed in a data set corresponding to an integrated luminosity of 3.0 fb $^{- 1}$ colle…

Measurement of the $B_{s}^{0} \to I^¼^{+} I^¼^{-}$ branching fraction and search for $B^{0} \to I^¼^{+} I^¼^{-}$ decays at the LHCb experiment

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

A search for the rare decays $B_{s}^{0} \to I^¼^{+} I^¼^{-}$ and $B^{0} \to I^¼^{+} I^¼^{-}$ is performed at the LHCb experiment. The data analysed correspond to an integrated luminosity of 1 fb $^{- 1}$ …

Measurement of forward $W \to e I^½$ production in $pp$ collisions at $s = 8$ TeV

LHCb collaboration, R. Aaij, B. Adeva +763

A measurement of the cross-section for $W \to e I^½$ production in $pp$ collisions is presented using data corresponding to an integrated luminosity of $2$ fb $^{- 1}$ collected by th…

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…

Search for Majorana neutrinos in $B^{-} \to I ¨ ^{+} I^¼^{-} I^¼^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +674

A search for heavy Majorana neutrinos produced in the $B^{-} \to I ¨ ^{+} I^¼^{-} I^¼^{-}$ decay mode is performed using 3 fb $^{- 1}$ of integrated luminosity collected with the LHCb detector in…

First observation of the decay Bc+ to J/psi pi+pi-pi+

LHCb collaboration, R. Aaij, C. Abellan Beteta +592

The decay Bc+ --> J/psi pi+pi-pi+ is observed for the first time, using 0.8 fb-1 of pp collisions at sqrt{s}=7 TeV collected by the LHCb experiment. The ratio of branching fraction…

Measurements of the branching fractions of the decays $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ and $B_{s}^{0} \to D_{s}^{-} I ¨ ^{+}$

The LHCb collaboration, R. Aaij, C. Abellan Beteta +592

The decay mode $\B^{0}_{s} \to D^{\mp}_{s} K^{\pm} $ allows for one of the theoretically cleanest measurements of the CKM angle $I^^{3}$ through the study of time-dependent $\ensuremat…

Observation of X(3872) production in pp collisions at sqrt(s)= 7 TeV

LHCb Collaboration, R. Aaij, C. Abellan Beteta +585

Using 34.7 pb-1 of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at sqrt(s) = 7 TeV is observed for the first time. Candidat…

Measurement of indirect $C P$ asymmetries in $D^{0} \to K^{-} K^{+}$ and $D^{0} \to I ¨ ^{-} I ¨ ^{+}$ decays using semileptonic $B$ decays

LHCb collaboration, R. Aaij, B. Adeva +707

Time-dependent $C P$ asymmetries in the decay rates of the singly Cabibbo-suppressed decays $D^{0} \to K^{-} K^{+}$ and $D^{0} \to I ¨ ^{-} I ¨ ^{+}$ are measured in $pp$ collision data…

Measurement of the isospin asymmetry in $B \to K^{(*)} I^¼^{+} I^¼^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +615

The isospin asymmetries of $B \to K^{(*)} I^¼^{+} I^¼^{-}$ decays and the partial branching fractions of $B^{0} \to K^{0} I^¼^{+} I^¼^{-}$ and $B^{+} \to K^{*+} I^¼^{+} I^¼^{-}$ are measured as a function of th…

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…

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…

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…

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

LHCb collaboration, R. Aaij, B. Adeva +722

An angular analysis and a measurement of the differential branching fraction of the decay $B_{s}^{0} \to I ¨ I^¼^{+} I^¼^{-}$ are presented, using data corresponding to an integrated luminosity o…

Measurement of the $B ˉ_{s}^{0} \to D_{s}^{-} D_{s}^{+}$ and $B ˉ_{s}^{0} \to D^{-} D_{s}^{+}$ effective lifetimes

LHCb collaboration, R. Aaij, B. Adeva +672

The first measurement of the effective lifetime of the $B ˉ_{s}^{0}$ meson in the decay $B ˉ_{s}^{0} \to D_{s}^{-} D_{s}^{+}$ is reported using a proton-proton collision dataset, correspondi…

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…

Measurement of the exclusive $I^¥$ production cross-section in $pp$ collisions at $s =$ 7 TeV and 8 TeV

LHCb collaboration, R. Aaij, B. Adeva +705

A study is presented of central exclusive production of $I^¥ (n S)$ states, where the $I^¥ (n S)$ resonances decay to the $I^¼^{+} I^¼^{-}$ final state, using $pp$ collision data recorded by th…

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…

Study of $W$ boson production in association with beauty and charm

LHCb collaboration, R. Aaij, B. Adeva +722

The associated production of a $W$ boson with a jet originating from either a light parton or heavy-flavor quark is studied in the forward region using proton-proton collisions. Th…

First observations of the rare decays $B^{+} - > K^{+} I ¨ ^{+} I ¨ ^{-} I^¼^{+} I^¼^{-}$ and $B^{+} - > I ¨ K^{+} I^¼^{+} I^¼^{-}$

LHCb collaboration, R. Aaij, B. Adeva +697

First observations of the rare decays $B^{+} \to K^{+} I ¨ ^{+} I ¨ ^{-} I^¼^{+} I^¼^{-}$ and $B^{+} \to I ¨ K^{+} I^¼^{+} I^¼^{-}$ are presented using data corresponding to an integrated luminosity of…

Observation of $J / I ¨ p$ resonances consistent with pentaquark states in $I^_{b}^{0} \to J / I ¨ K^{-} p$ decays

LHCb collaboration, R. Aaij, B. Adeva +720

Observations of exotic structures in the $J / I ¨ p$ channel, that we refer to as pentaquark-charmonium states, in $I^_{b}^{0} \to J / I ¨ K^{-} p$ decays are presented. The data sample correspon…

Measurement of resonant and $C P$ components in $B_{s}^{0} \to J / I ¨ I ¨ ^{+} I ¨ ^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +680

The resonant structure of the decay $B_{s}^{0} \to J / I ¨ I ¨ ^{+} I ¨ ^{-}$ is studied using data corresponding to 3 fb $^{- 1}$ of integrated luminosity from $pp$ collisions by the LHC a…

Measurements of prompt charm production cross-sections in $pp$ collisions at $s = 13 TeV$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +724

Production cross-sections of prompt charm mesons are measured with the first data from $pp$ collisions at the LHC at a centre-of-mass energy of $13 TeV$ . The data sample…

Measurement of the $I^\cdot_{c} (1 S)$ production cross-section in proton-proton collisions via the decay $I^\cdot_{c} (1 S) \to p p ˉ$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +705

The production of the $I^\cdot_{c} (1 S)$ state in proton-proton collisions is probed via its decay to the $p p ˉ$ final state with the LHCb detector, in the rapidity range $2.0 < y <…

Observation of the $B_{s}^{0} \to J / I ¨ K_{S}^{0} K^{\pm} I ¨ ^{\mp}$ decay

LHCb collaboration, R. Aaij, B. Adeva +696

Decays of the form $B_{(s)}^{0} \to J / I ¨ K_{S}^{0} h^{+} h^{(') -}$ ( $h^{(')} = K, I ¨ $ ) are searched for in proton-proton collision data corresponding…

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…

Search for the decay $B_{s}^{0} \to D^{0} f_{0} (980)$

LHCb collaboration, R. Aaij, B. Adeva +705

A search for $B_{s}^{0} \to D^{0} f_{0} (980)$ decays is performed using $3.0 fb^{- 1}$ of $pp$ collision data recorded by the LHCb experiment during 2011 and 2012. Th…

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…

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 $pp$ …

First observation and measurement of the branching fraction for the decay $B_{s}^{0} \to D_{s}^{*\mp} K^{\pm}$

LHCb Collaboration, R. Aaij, B. Adeva +697

The first observation of the $B_{s}^{0} \to D_{s}^{*\mp} K^{\pm}$ decay is reported using 3.0 $f b^{- 1}$ of proton-proton collision data collected by the LHCb experiment. The $D_{s}^{*\mp}$ …

Measurement of the time-integrated $C P$ asymmetry in $D^{0} \to K_{S}^{0} K_{S}^{0}$ decays

LHCb collaboration, R. Aaij, B. Adeva +722

The time-integrated $C P$ asymmetry in the decay $D^{0} \to K_{S}^{0} K_{S}^{0}$ is measured using $3 f b^{- 1}$ of proton-proton collision data collected by the LHCb experiment at centre-of-ma…

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…

Observation of $J / I ¨ $ pair production in pp collisions at $s = 7 T e V$

LHCb Collaboration, R. Aaij, B. Adeva +567

The production of $J / I ¨ $ pairs in proton-proton collisions at a centre-of-mass energy of 7 TeV has been observed using an integrated luminosity of $37.5 p b^{- 1}$ collected with the…

Measurement of the CP-violating phase $I ¨ _{s}$ in $B_{s}^{0} \to J / I ¨ I ¨ ^{+} I ¨ ^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +697

The mixing-induced CP-violating phase $I ¨ _{s}$ in $B_{s}^{0}$ and $B_{s}^{0}$ decays is measured using the $J / I ¨ I ¨ ^{+} I ¨ ^{-}$ final state in data, taken from 3\,fb $^{- 1}$ of integra…

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…

Forward production of $I^¥$ mesons in $pp$ collisions at $s = 7$ and 8TeV

LHCb collaboration, R. Aaij, B. Adeva +720

The production of $I^¥$ mesons in $pp$ collisions at $= 7$ and $8 TeV$ is studied with the LHCb detector using data samples corresponding to an integrated luminosity o…

Test of lepton universality using $B^{+} \to K^{+} ℓ^{+} ℓ^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +697

A measurement of the ratio of the branching fractions of the $B^{+} \to K^{+} I^¼^{+} I^¼^{-}$ and $B^{+} \to K^{+} e^{+} e^{-}$ decays is presented using proton-proton col…

Measurement of the $J / I ¨ $ pair production cross-section in $pp$ collisions at $s = 13 TeV$

LHCb collaboration, R. Aaij, B. Adeva +763

The production cross-section of $J / I ¨ $ pairs is measured using a data sample of $pp$ collisions collected by the LHCb experiment at a centre-of-mass energy of $\sqrt{s} = 13 \,{\ma…

Measurement of the forward-backward asymmetry in $Z/Î³^{\ast} \rightarrow Î¼^{+}Î¼^{-}$ decays and determination of the effective weak mixing angle

LHCb collaboration, R. Aaij, B. Adeva +722

The forward-backward charge asymmetry for the process $q\bar{q} \rightarrow Z/Î³^{\ast} \rightarrow Î¼^{+}Î¼^{-}$ is measured as a function of the invariant mass of the dimuon syst…

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 \…

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…

Evidence for CP violation in time-integrated D0 -> h-h+ decay rates

LHCb Collaboration, R. Aaij, C. Abellan Beteta +586

A search for time-integrated CP violation in D0 -> h-h+ (h=K, pi) decays is presented using 0.62 fb^-1 of data collected by LHCb in 2011. The flavor of the charm meson is determine…

Updated measurements of exclusive $J / I ¨ $ and $I ¨ (2 S)$ production cross-sections in $pp$ collisions at $s = 7$ TeV

LHCb collaboration, R. Aaij, B. Adeva +670

The differential cross-section as a function of rapidity has been measured for the exclusive production of $J / I ¨ $ and $I ¨ (2 S)$ mesons in proton-proton collisions at $s = 7$ Te…

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…

First observation of the decay $D^{0} \to K^{-} I ¨ ^{+} I^¼^{+} I^¼^{-}$ in the $I ¨ ^{0}$ - $I ¨ $ region of the dimuon mass spectrum

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +730

A study of the decay $D^{0} \to K^{-} I ¨ ^{+} I^¼^{+} I^¼^{-}$ is performed using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 8 T…

Precision measurement of the ratio of the $I^_{b}^{0}$ to $B^{0}$ lifetimes

LHCb collaboration, R. Aaij, B. Adeva +680

The LHCb measurement of the lifetime ratio of the $I^_{b}^{0}$ to the $B^{0}$ meson is updated using data corresponding to an integrated luminosity of 3.0 fb $^{- 1}$ collected…

A study of CP violation in $B^{\pm} \to D K^{\pm}$ and $B^{\pm} \to D I ¨ ^{\pm}$ decays with $D \to K_{S}^{0} K^{\pm} I ¨ ^{\mp}$ final states

LHCb collaboration, R. Aaij, B. Adeva +682

A first study of CP violation in the decay modes $B^{\pm} \to [K_{S}^{0} K^{\pm} I ¨ ^{\mp}]_{D} h^{\pm}$ and $B^{\pm} \to [K_{S}^{0} K^{\mp} I ¨ ^{\pm}]_{D} h^{\pm}$ , where $h$ labels a $K$ or $I ¨ $ mes…

Observation of Bs -> J/Ïf'2(1525) in J/ÏK+K- final states

LHCb Collaboration, R. Aaij, C. Abellan Beteta +583

The decay Bs -> J/ÏK+ K- is investigated using 0.16/fb of data collected with the LHCb detector using 7 TeV pp collisions. Although the J/ÏÏ channel is well known, final states…

Measurement of the effective $B_{s}^{0} \to K^{+} K^{-}$ lifetime

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

A precise determination of the effective $B_{s}^{0} \to K^{+} K^{-}$ lifetime can be used to constrain contributions from physics beyond the Standard Model in the $B_{s}^{0}$ meson sys…

Observation of the $B_{s}^{0} \to I^\cdot^{'} I^\cdot^{'}$ decay

LHCb collaboration, R. Aaij, B. Adeva +703

The first observation of the $B_{s}^{0} \to I^\cdot^{'} I^\cdot^{'}$ decay is reported. The study is based on a sample of proton-proton collisions corresponding to $3.0$ $f b^{- 1}$ of integrated lum…

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-ex2011

Measurement of mixing and CP violation parameters in two-body charm decays

LHCb Collaboration, R. Aaij, C. Abellan Beteta +585

A study of mixing and indirect CP violation in D0 mesons through the determination of the parameters y_CP and A_Î is presented. The parameter y_CP is the deviation from unity of t…

Search for the $B_{s}^{0} \to I^\cdot^{'} I ¨ $ decay

LHCb collaboration, R. Aaij, B. Adeva +763

A search for the charmless $B_{s}^{0} \to I^\cdot^{'} I ¨ $ decay is performed using $pp$ collision data collected by the LHCb experiment at centre-of-mass energies of $7$ and $8$ TeV…

Evidence for exotic hadron contributions to $I^_{b}^{0} \to J / I ¨ p I ¨ ^{-}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +739

A full amplitude analysis of $I^_{b}^{0} \to J / I ¨ p I ¨ ^{-}$ decays is performed with a data sample acquired with the LHCb detector from 7 and 8 TeV $pp$ collisions, corresponding to an in…

Measurement of the $B_{s}^{0} \to I^¼^{+} I^¼^{-}$ branching fraction and effective lifetime and search for $B^{0} \to I^¼^{+} I^¼^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +771

A search for the rare decays $B_{s}^{0} \to I^¼^{+} I^¼^{-}$ and $B^{0} \to I^¼^{+} I^¼^{-}$ is performed at the LHCb experiment using data collected in $pp$ collisions corresponding to a total integrated…

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…

First observation of the decay $B_{s}^{0} \to K_{S}^{0} K^{*} (892)^{0}$

LHCb collaboration, R. Aaij, B. Adeva +713

A search for $B_{(s)}^{0} \to K_{S}^{0} K^{*} (892)^{0}$ decays is performed using $pp$ collision data, corresponding to an integrated luminosity of $1.0 fb^{- 1}$ , collected…

Study of the production of $I^_{b}^{0}$ and $B^{0}$ hadrons in $pp$ collisions and first measurement of the $I^_{b}^{0} \to J / I ¨ p K^{-}$ branching fraction

LHCb collaboration, R. Aaij, B. Adeva +722

The product of the $I^_{b}^{0}$ ( $B^{0}$ ) differential production cross-section and the branching fraction of the decay $I^_{b}^{0} \to J / I ¨ p K^{-}$ ($\overline{B}^0\rightarro…

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…

Search for structure in the $B_{s}^{0} I ¨ ^{\pm}$ invariant mass spectrum

LHCb collaboration, R. Aaij, B. Adeva +761

The $B_{s}^{0} I ¨ ^{\pm}$ invariant mass distribution is investigated in order to search for possible exotic meson states. The analysis is based on a data sample recorded with the LHCb det…

Observation of $B_{s}^{0} \to K^{\pm} K^{\mp}$ and evidence for $B_{s}^{0} \to K^{-} I ¨ ^{+}$ decays

LHCb collaboration, R. Aaij, B. Adeva +700

Measurements of the branching fractions of $B_{s}^{0} \to K^{*\pm} K^{\mp}$ and $B_{s}^{0} \to K^{*\pm} I ¨ ^{\mp}$ decays are performed using a data sample corresponding to $1.0 fb^{- 1}$ …

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 $1.0 fb^{- 1}$ …

Measurement of the inelastic $pp$ cross-section at a centre-of-mass energy of $s = 7$ TeV

LHCb collaboration, R. Aaij, B. Adeva +699

The cross-section for inelastic proton-proton collisions, with at least one prompt long-lived charged particle of transverse momentum $p_{T} > 0.2$ GeV/ $c$ in the pseudorapidity…

Search for decays of neutral beauty mesons into four muons

LHCb collaboration, R. Aaij, B. Adeva +768

A search for the non-resonant 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 presented. The measurement is performed using th…

Measurement of the $I ¨ _{b} (3 P)$ mass and of the relative rate of $I ¨ _{b 1} (1 P)$ and $I ¨ _{b 2} (1 P)$ production

LHCb collaboration, R. Aaij, B. Adeva +696

The production of $I ¨ _{b}$ mesons in proton-proton collisions is studied using a data sample collected by the LHCb detector, at centre-of-mass energies of $s = 7$ and $8$ TeV an…

Improved limit on the branching fraction of the rare decay $K_{S}^{0} \to I^¼^{+} I^¼^{-}$

LHCb collaboration, R. Aaij, B. Adeva +767

A search for the decay $K_{S}^{0} \to I^¼^{+} I^¼^{-}$ is performed, based on a data sample of proton-proton collisions corresponding to an integrated luminosity of 3 fb$^{…

Measurement of the ratio of branching fractions $B (B_{c}^{+} \to J / I ¨ K^{+}) / B (B_{c}^{+} \to J / I ¨ I ¨ ^{+})$

LHCb collaboration, R. Aaij, B. Adeva +755

The ratio of branching fractions $R_{K / I ¨ } \equiv B (B_{c}^{+} \to J / I ¨ K^{+}) / B (B_{c}^{+} \to J / I ¨ I ¨ ^{+})$ is measured with $pp$ collision data collected by the…

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…

Observation of $B_{c}^{+} \to J / I ¨ D^{()} K^{()}$ decays

LHCb collaboration, R. Aaij, B. Adeva +764

A search for the decays $B_{c}^{+} \to J / I ¨ D^{(*) 0} K^{+}$ and $B_{c}^{+} \to J / I ¨ D^{(*) +} K^{* 0}$ is performed with data collected at the LHCb experiment corresponding to an integrated lumi…

Measurement of the forward $Z$ boson production cross-section in $pp$ collisions at $s$ = 7 TeV

LHCb collaboration, R. Aaij, B. Adeva +705

A measurement of the production cross-section for $Z$ bosons that decay to muons is presented. The data were recorded by the LHCb detector during $pp$ collisions at a centre-of-mas…

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…