Charmless b-meson and b-baryon decays at LHCb
Résumé
We present the recent branching fraction measurements of charmless $B^{+}\rightarrow h^{+}h'^{+}h'^{-}$ decays, where $h$ is a pion or a kaon, using 3 fb$^{-1}$ of pp collisions at $\sqrt{s}$=7 and 8 TeV by the LHCb experiment. The latest measurements of $CP$ asymmetries in charmless baryonic decays are also reported. The updated measurement of the search for $CP$ violation in $\Lambda^{0}_{b}\rightarrow p \pi^{-}\pi^{+}\pi^{-}$ decays and the first amplitude analysis of $\Xi_{b}^{-}\rightarrow pK^{-}K^{-}$, which is also the first amplitude analysis of any b-baryon decay mode allowing for $CP$ violation effects.
Mots clés
p p: scattering
p p: colliding beams
B+: hadronic decay
Lambda/b0: hadronic decay
Xi/b: hadronic decay
amplitude analysis
LHC-B
CERN LHC Coll
decay modes
B+: branching ratio
branching ratio: ratio: measured
asymmetry: CP
CP: violation
experimental results
B+ --> 2K+ K-
B+ --> K+ pi+ pi-
B+ --> pi+ K+ K-
B+ --> 2pi+ pi-
Lambda/b0 --> p 2pi- pi+
Xi/b- --> p K+ K-
7000 GeV-cms
8000 GeV-cms