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Measurement of the ratio of branching fractions BR(B0 -> K*0 gamma)/BR(Bs0 -> phi gamma) and the direct CP asymmetry in B0 -> K*0 gamma
LHCb collaboration, R. Aaij, C. Abellan Beteta +621
The ratio of branching fractions of the radiative B decays B0 -> K*0 gamma and Bs0 phi gamma has been measured using an integrated luminosity of 1.0 fb-1 of pp collision data colle…
Evidence for the decay and measurement of the relative branching fractions of meson decays to and
LHCb Collaboration, R. Aaij, C. Abellan Beteta +620
First evidence of the decay is found and the and decays are studied using a dataset corresponding to an integrated lumino…
First observation of the decay
LHCb Collaboration, R. Aaij, C. Abellan Beteta +621
A discovery of the rare decay is presented. This decay is observed for the first time, with 5.2 significance. The observation is made usin…
Differential branching fraction and angular analysis of the decay
LHCb collaboration, R. Aaij, C. Abellan Beteta +617
The angular distribution and differential branching fraction of the decay are studied with a dataset corresponding to of…
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…
Measurement of the fraction of \Y1S originating from \chib1P decays in collisions at $\sqrt{s} = 7\tev$
LHCb collaboration, R. Aaij, C. Abellan Beteta +616
The production of \chib1P mesons in collisions at a centre-of-mass energy of $7\tev$ is studied using $32\invpb$ of data collected with the \lhcb detector. The $\chib1P$ meson…
Observation of the decay B0 -> D0bar K+ K- and evidence for Bs -> D0bar K+ K-
LHCb collaboration, R. Aaij, C. Abellan Beteta +621
The first observation of the decay B0 -> D0bar K+ K- is reported from an analysis of 0.62 fb-1 of pp collision data collected with the LHCb detector. Its branching fraction is meas…
Measurement of the branching fraction and angular amplitudes
LHCb collaboration, R. Aaij, C. Abellan Beteta +616
A search for the decay with is performed with 0.37 fb of collisions at = 7 TeV collected by the LHCb…
Study of decays to $D^+\KS$ and final states in collisions
LHCb collaboration, R. Aaij, C. Abellan Beteta +616
A study of $D^+\KS$ and final states is performed in a sample of 1.0/fb of collision data collected at a centre-of-mass energy of TeV with the \lhcb dete…
Measurement of the effective lifetime
LHCb collaboration, R. Aaij, C. Abellan Beteta +616
A precise determination of the effective lifetime can be used to constrain contributions from physics beyond the Standard Model in the meson sys…
Measurement of the Bs effective lifetime in the J/psi f0(980) final state
LHCb Collaboration, R. Aaij, C. Abellan Beteta +618
The effective lifetime of the Bs meson in the decay mode Bs->J/ψf0(980) is measured using 1.0/fb of data collected in pp collisions at sqrt(s) = 7 TeV with the LHCb detector. The r…
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…
Measurement of prompt hadron production ratios in collisions at 0.9 and 7 TeV
LHCb collaboration, R. Aaij, C. Abellan Beteta +619
The charged-particle production ratios , , , , and are measured with t…
Measurement of -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…
Measurement of the CP-violating phase ϕs in Bs->J/ψπ+π- decays
LHCb collaboration, R. Aaij, C. Abellan Beteta +592
Measurement of the mixing-induced CP-violating phase phi_s in Bs decays is of prime importance in probing new physics. Here 7421 +/- 105 signal events from the dominantly CP-odd fi…
Measurement of relative branching fractions of B decays to and mesons
LHCb Collaboration
The relative rates of B-meson decays into and mesons are measured for the three decay modes in pp collisions recorded with the LHCb detector. The ratios of branching…
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…
Measurement of the isospin asymmetry in decays
LHCb collaboration, R. Aaij, C. Abellan Beteta +615
The isospin asymmetries of decays and the partial branching fractions of and are measured as a function of the di-m…
Observation of double charm production involving open charm in pp collisions at =7 TeV
LHCb Collaboration, R. Aaij, C. Abellan Beteta +589
The production of mesons accompanied by open charm, and of pairs of open charm hadrons are observed in pp collisions at a centre-of-mass energy of 7 TeV using an integrated l…
Measurement of the branching fraction
LHCb collaboration, R. Aaij, C. Abellan Beteta +594
The branching fraction is measured in a data sample corresponding to 0.41 of integrated luminosity collected with the LHCb detector at the LHC. This ch…
Strong constraints on the rare decays Bs -> mu+ mu- and B0 -> mu+ mu-
LHCb collaboration, R. Aaij, C. Abellan Beteta +607
A search for Bs -> mu+ mu- and B0 -> mu+ mu- decays is performed using 1.0 fb^-1 of pp collision data collected at \sqrt{s}=7 TeV with the LHCb experiment at the Large Hadron Colli…
Analysis of the resonant components in Bs->J/ψπ+π-
The LHCb collaboration, R. Aaij, C. Abellan Beteta +592
The decay Bs->J/ψπ+π- can be exploited to study CP violation. A detailed understanding of its structure is imperative in order to optimize its usefulness. An analysis of this three…
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…
Inclusive and production in the forward region at TeV
LHCb collaboration, R. Aaij, C. Abellan Beteta +606
Measurements of inclusive and boson production cross-sections in collisions at TeV using final states containing muons are presented. The data sample corr…