2014/08/21 by I. Bediaga, Ignacio Bediaga, Bediaga, Ignacio
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.48550/arxiv.1408.5078
Proceedings to FPCP-2014- Flavor Physics \& CP Violation, Marseille, France, May 25-30, 2014
arxiv created 2014/08/21 · arxiv updated 2014/08/22
Charmless B decays are dominated by contributions from the short distance amplitudes from tree level and penguin loop-level amplitudes. The Tree contribution presents a weak phase γ. The relationship between these two amplitudes can generated a CP asymmetry depending from the relative amount among them in a particular decay. In multi-body charmless B decays, these relative contribution can change along the phase space, given a non isotropic distribution of CP asymmetries in the Dalitz plot. Two recent LHCb analyses involving charmless multi-body B decays are discussed: the obsevation of CP asymmetries in the phase space of the three-body decays B^± → π^± π+ π- and B^± → π^± K+ K-; and the angular analysis of the B0 → ϕK^*(892)0 decay.