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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…
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…
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…
First observation of the decay and studies of excited mesons
LHCb collaboration, R. Aaij, C. Abellan Beteta +621
Properties of the orbitally excited (L=1) states are studied using 1.0 fb of pp collisions at TeV collected with the LHCb detector. The first observation…
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…
Measurements of production and mass with the decay
LHCb collaboration, R. Aaij, C. Abellan Beteta +617
Measurements of production and mass are performed with the decay mode using 0.37 fb of data collected in collisions at TeV by th…
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…
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…
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…
Measurement of psi(2S) meson production in pp collisions at sqrt(s)=7 TeV
LHCb collaboration, R. Aaij, C. Abellán Beteta +577
The differential cross-section for the inclusive production of psi(2S) mesons in pp collisions at sqrt(s)=7 TeV has been measured with the LHCb detector. The data sample correspond…
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…
Measurements of the branching fractions and CP asymmetries of B+ to J/psi pi+ and B+ to psi(2S) pi+ decays
LHCb collaboration, R. Aaij, C. Abellan Beteta +589
A study of B+ to J/psi pi+ and B+ to psi(2S) pi+ decays is performed with data corresponding to 0.37 fb-1 of proton-proton collisions at sqrt(s)=7 TeV. Their branching fractions ar…
Opposite-side flavour tagging of B mesons at the LHCb experiment
LHCb Collaboration, R. Aaij, C. Abellan Beteta +594
The calibration and performance of the opposite-side flavour tagging algorithms used for the measurements of time-dependent asymmetries at the LHCb experiment are described. The al…
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…
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…
First evidence of direct CP violation in charmless two-body decays of Bs mesons
LHCb collaboration, R. Aaij, C. Abellan Beteta +591
Using a data sample corresponding to an integrated luminosity of 0.35 collected by LHCb in 2011, we report the first evidence of CP violation in the decays of $B…
Determination of the sign of the decay width difference in the B_s system
LHCb Collaboration, R. Aaij, C. Abellan Beteta +594
The interference between the K+K- S-wave and P-wave amplitudes in B_s -> J/psi K+K- decays with the K+K- pairs in the region around the phi(1020) resonance is used to determine the…
Heavy flavor production and spectroscopy at LHCb
Diego Milanes
We summarize the main measurements performed with the LHCb detector on production and spectroscopy in the heavy flavour sector, using data samples recorded during 2010 and 2011 dat…
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…
Search for the rare decays Bs -> mu+ mu- and B0 -> mu+ mu-
LHCb Collaboration, R. Aaij, C. Abellan Beteta +590
A search for the decays Bs -> mu+ mu- and B0 -> mu+ mu- is performed with 0.37 fb^-1 of pp collisions at sqrt{s} = 7 TeV collected by the LHCb experiment in 2011. The upper limits…