A. Yzquierdo

activity

20092013

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

224 citations · 1.9k across the 23 of their papers we have counts for

collaborators

23 papers

hep-ex2013★ 52 cited

Studies of beauty baryon decays to $D^{0} p h^{-}$ and $Λ_{c}^{+} h^{-}$ final states

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

Decays of beauty baryons to the $D^{0} p h^{-}$ and $Λ_{c}^{+} h^{-}$ final states (where $h$ indicates a pion or a kaon) are studied using a data sample of $pp$ collisions, corresponding to…

hep-ex2013★ 39 cited

Observation of B^0_(s) -> J/ψf_1(1285) decays and measurement of the f_1(1285) mixing angle

LHCb collaboration, R. Aaij, B. Adeva +666

Decays of Bs and B0 mesons into J/ψπ+π-π+π- final states, produced in pp collisions at the LHC, are investigated using data corresponding to an integrated luminosity of 3/fb collec…

hep-ex2013★ 153 cited

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

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

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

hep-ex2013★ 34 cited

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★ 149 cited

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★ 27 cited

Observations of $B_{s}^{0} \to ψ (2 S) η$ and $B_{(s)}^{0} \to ψ (2 S) π^{+} π^{-}$ decays

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

First observations of the $B_{s}^{0} \to ψ (2 S) η$ , $B^{0} \to ψ (2 S) π^{+} π^{-}$ and $B_{s}^{0} \to ψ (2 S) π^{+} π^{-}$ decays are made using a dataset corresponding to an int…

hep-ex2013★ 166 cited

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 $B_{s}^{0} \to D_{s}^{-} π^{+}$ and $B^{0} \to D^{-} K^{+}$ . The m…

hep-ex2012★ 26 cited

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-ex2012★ 91 cited

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-ex2012★ 41 cited

Measurement of prompt hadron production ratios in $pp$ collisions at $s =$ 0.9 and 7 TeV

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

The charged-particle production ratios $p ˉ / p$ , $K^{-} / K^{+}$ , $π^{-} / π^{+}$ , $(p + p ˉ) / (π^{+} + π^{-})$ , $(K^{+} + K^{-}) / (π^{+} + π^{-})$ and $(p + p ˉ) / (K^{+} + K^{-})$ are measured with t…

hep-ex2012★ 78 cited

Measurement of $b$ -hadron branching fractions for two-body decays into charmless charged hadrons

LHCb collaboration, R. Aaij, C. Abellan Beteta +589

Based on data corresponding to an integrated luminosity of 0.37 fb^-1 collected by the LHCb experiment in 2011, the following ratios of branching fractions are measured: B(B0 -> pi…

hep-ex2012★ 26 cited

Measurement of the polarization amplitudes and triple product asymmetries in the B_s^0 -> phi phi decay

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

Using 1.0 fb^{-1} of pp collision data collected at a centre-of-mass energy of sqrt{s}=7 TeV with the LHCb detector, measurements of the polarization amplitudes, strong phase diffe…

hep-ex2012★ 123 cited

Inclusive $W$ and $Z$ production in the forward region at $s = 7$ TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +606

Measurements of inclusive $W$ and $Z$ boson production cross-sections in $pp$ collisions at $s = 7$ TeV using final states containing muons are presented. The data sample corr…

hep-ex2012★ 47 cited

Observation of CP violation in B+ to DK+ decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +589

An analysis of B+ to DK+ and B+ to Dpi+ decays is presented where the D meson is reconstructed in the two-body final states: K+pi-, K+K-, pi+pi- and pi+K-. Using 1.0 fb-1 of LHCb d…

hep-ex2012★ 83 cited

Search for the X(4140) state in B+ to J/psi phi K+ decays

LHCb Collaboration, R. Aaij, C. Abellan Beteta +589

A search for the X(4140) state in B+ to J/psi phi K+ decays is performed with 0.37 fb-1 of pp collisions at sqrt(s)=7 TeV collected by the LHCb experiment. No evidence for this sta…

hep-ex2012★ 47 cited

Measurement of the B+- production cross-section in pp collisions at sqrt(s)=7 TeV

The LHCb Collaboration, R. Aaij, C. Abellan Beteta +594

The production of B+- mesons in proton-proton collisions at sqrt(s)=7 TeV is studied using 35 pb-1 of data collected by the LHCb detector. The B+- mesons are reconstructed exclusiv…

hep-ex2012★ 72 cited

Searches for Majorana neutrinos in B- decays

LHCb Collaboration, R. Aaij, C. Abellan Beteta +589

Searches for heavy Majorana neutrinos in B- decays in final states containing hadrons plus a μ- μ- pair have been performed using 0.41/fb of data collected with the LHCb detector i…

hep-ex2011★ 42 cited

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_Γ is presented. The parameter y_CP is the deviation from unity of th…

hep-ex2011★ 53 cited

Measurement of charged particle multiplicities in $pp$ collisions at $s = 7$ TeV in the forward region

LHCb Collaboration, R. Aaij, C. Abellan Beteta +589

The charged particle production in proton-proton collisions is studied with the LHCb detector at a centre-of-mass energy of $s = 7$ TeV in different intervals of pseudorapid…

hep-ex2011★ 179 cited

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…

hep-ex2011★ 133 cited

Measurement of the CP-violating phase phi_s in the decay Bs->J/psi phi

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

We present a measurement of the time-dependent CP-violating asymmetry in B_s -> J/psi phi decays, using data collected with the LHCb detector at the LHC. The decay time distributio…

hep-ex2011★ 224 cited

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…

hep-ex2009★ 40 cited

Roadmap for selected key measurements of LHCb

The LHCb Collaboration, B. Adeva, M. Adinolfi +509

Six of the key physics measurements that will be made by the LHCb experiment, concerning CP asymmetries and rare B decays, are discussed in detail. The "road map" towards the preci…

Studies of beauty baryon decays to D0ph− and Λc+​h− final states

Observation of B^0_(s) -> J/ψf_1(1285) decays and measurement of the f_1(1285) mixing angle

Measurement of J/ψ polarization in pp collisions at s​=7 TeV

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

First observation of CP violation in the decays of Bs mesons

Observations of Bs0​→ψ(2S)η and B(s)0​→ψ(2S)π+π− decays

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

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

Observation of D0-D0bar oscillations

Measurement of prompt hadron production ratios in pp collisions at s​= 0.9 and 7 TeV

Measurement of b-hadron branching fractions for two-body decays into charmless charged hadrons

Measurement of the polarization amplitudes and triple product asymmetries in the B_s^0 -> phi phi decay

Inclusive W and Z production in the forward region at s​=7 TeV

Observation of CP violation in B+ to DK+ decays

Search for the X(4140) state in B+ to J/psi phi K+ decays

Measurement of the B+- production cross-section in pp collisions at sqrt(s)=7 TeV

Searches for Majorana neutrinos in B- decays

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

Measurement of charged particle multiplicities in pp collisions at s​=7TeV in the forward region

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

Measurement of the CP-violating phase phi_s in the decay Bs->J/psi phi

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

Roadmap for selected key measurements of LHCb

Studies of beauty baryon decays to $D^{0} p h^{-}$ and $Λ_{c}^{+} h^{-}$ final states

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

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

Observations of $B_{s}^{0} \to ψ (2 S) η$ and $B_{(s)}^{0} \to ψ (2 S) π^{+} π^{-}$ decays

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

Measurement of prompt hadron production ratios in $pp$ collisions at $s =$ 0.9 and 7 TeV

Measurement of $b$ -hadron branching fractions for two-body decays into charmless charged hadrons

Inclusive $W$ and $Z$ production in the forward region at $s = 7$ TeV

Measurement of charged particle multiplicities in $pp$ collisions at $s = 7$ TeV in the forward region