002010546 001__ 2010546
002010546 003__ SzGeCERN
002010546 005__ 20210503101901.0
002010546 0248_ $$aoai:cds.cern.ch:2010546$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pcerncds:CERN
002010546 035__ $$9arXiv$$aoai:arXiv.org:1504.04462
002010546 035__ $$9Inspire$$a1361911
002010546 037__ $$9arXiv$$aarXiv:1504.04462$$chep-ex
002010546 041__ $$aeng
002010546 100__ $$aPescatore, L.$$iINSPIRE-00392110$$uBirmingham U.
002010546 245__ $$aAn analysis of $\Lambda_b^0 \rightarrow \Lambda\mu^+\mu^-$ decays at the LHCb experiment
002010546 269__ $$c17 Apr 2015
002010546 260__ $$c2015
002010546 300__ $$a4 p
002010546 500__ $$aComments: 4 pages, 6 figures
002010546 500__ $$9arXiv$$a4 pages, 6 figures
002010546 520__ $$aThe branching fraction of the rare decay $\Lambda_b^0 \rightarrow \Lambda \mu^+ \mu^-$ is measured as a function of $q^2$, the square of the dimuon invariant mass. The analysis is performed using proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb$^{-1}$, collected by the LHCb experiment. Evidence of signal is found for the first time in the $q^2$ region below the square of the J/$\psi$ mass. In the $q^2$ intervals where the signal is observed, angular distributions are studied and two forward-backward asymmetries, in the dimuon and hadronic systems, are measured for the first time.
002010546 540__ $$aarXiv nonexclusive-distrib. 1.0$$barXiv$$uhttp://arxiv.org/licenses/nonexclusive-distrib/1.0/
002010546 595__ $$agiva a faire
002010546 595__ $$aLANL EDS
002010546 65017 $$2arXiv$$aParticle Physics - Experiment
002010546 690C_ $$aPREPRINT
002010546 690C_ $$aCERN
002010546 693__ $$aLHCb$$aCERN LHC
002010546 695__ $$9LANL EDS$$ahep-ex
002010546 710__ $$gfor the LHCb Collaboration
002010546 8564_ $$uhttp://arxiv.org/pdf/1504.04462.pdf$$yPreprint
002010546 8564_ $$81323344$$s832488$$uhttps://cds.cern.ch/record/2010546/files/arXiv:1504.04462.pdf
002010546 8564_ $$81323340$$s23176$$uhttps://cds.cern.ch/record/2010546/files/figure8a.png$$y00004 Forward-backward asymmetries as a function of $q^2$ in the dimuon system (left) and $p\pi^{-}$ system (right) with the SM prediction~\protect\cite{prediction} overlaid.
002010546 8564_ $$81323341$$s22350$$uhttps://cds.cern.ch/record/2010546/files/figure8b.png$$y00005 Forward-backward asymmetries as a function of $q^2$ in the dimuon system (left) and $p\pi^{-}$ system (right) with the SM prediction~\protect\cite{prediction} overlaid.
002010546 8564_ $$81323342$$s24356$$uhttps://cds.cern.ch/record/2010546/files/figure7a.png$$y00002 Distributions of the (left) $\cos \theta_\ell$ and (right) $\cos \theta_h$ angles in data in the $15 < q^2 < 20$ GeV$^2/c^4$ interval with overlaid the total fit function, solid (blue) line, and the background component, dashed (red) line.
002010546 8564_ $$81323343$$s28670$$uhttps://cds.cern.ch/record/2010546/files/figure7b.png$$y00003 Distributions of the (left) $\cos \theta_\ell$ and (right) $\cos \theta_h$ angles in data in the $15 < q^2 < 20$ GeV$^2/c^4$ interval with overlaid the total fit function, solid (blue) line, and the background component, dashed (red) line.
002010546 8564_ $$81323345$$s26535$$uhttps://cds.cern.ch/record/2010546/files/figure5.png$$y00001 (left) Invariant mass of the $\Lambda\mu^+\mu^-$ system in the $15 < q^2 < 20$ GeV$^2/c^4$ interval with the fit function overlaid. (right) Measured differential branching fraction of the rare $\Lambda_b^0 \rightarrow \Lambda \mu^+ \mu^-$ decay as a function of $q^2$ with the SM prediction~\protect\cite{prediction} superimposed. The inner error bar on data points represents the total uncertainty on the relative branching fraction (statistical and systematic); the outer error bar also includes the uncertainties from the branching fraction of the normalisation mode.
002010546 8564_ $$81323346$$s34515$$uhttps://cds.cern.ch/record/2010546/files/figure2.png$$y00000 (left) Invariant mass of the $\Lambda\mu^+\mu^-$ system in the $15 < q^2 < 20$ GeV$^2/c^4$ interval with the fit function overlaid. (right) Measured differential branching fraction of the rare $\Lambda_b^0 \rightarrow \Lambda \mu^+ \mu^-$ decay as a function of $q^2$ with the SM prediction~\protect\cite{prediction} superimposed. The inner error bar on data points represents the total uncertainty on the relative branching fraction (statistical and systematic); the outer error bar also includes the uncertainties from the branching fraction of the normalisation mode.
002010546 916__ $$sn$$w201516
002010546 960__ $$a11
002010546 980__ $$aPREPRINT