Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/174978
Title: Observation of Several Sources of CP Violation in B+ -> pi(+)pi(+)pi(-) Decays
Author: Alfonso Albero, Alejandro
Calvo Gómez, Míriam
Camboni, Alessandro
Coquereau, Samuel
Garrido Beltrán, Lluís
Gascón Fora, David
Gironella Gironell, Pere
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Vilasis-Cardona, Xavier
García Martín, L.M.
Henry, L.
Jashal, B. K.
Martínez Vidal, F.
Oyanguren Campos, Arantza de
Ruiz Vidal, J.
Remon Alepuz, C.
Sánchez Mayordomo, C.
LHCb Collaboration
Keywords: Violació CP (Física nuclear)
Barions
CP violation (Nuclear physics)
Baryons
Issue Date: 21-Jan-2020
Publisher: American Physical Society
Abstract: Observations are reported of different sources of CP violation from an amplitude analysis of B+→π+π+π− decays, based on a data sample corresponding to an integrated luminosity of 3  fb−1 of pp collisions recorded with the LHCb detector. A large CP asymmetry is observed in the decay amplitude involving the tensor f2(1270) resonance, and in addition significant CP violation is found in the π+π−S wave at low invariant mass. The presence of CP violation related to interference between the π+π−S wave and the P wave B+→ρ(770)0π+ amplitude is also established; this causes large local asymmetries but cancels when integrated over the phase space of the decay. The results provide both qualitative and quantitative new insights into CP -violation effects in hadronic B decays.
Note: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.124.031801
It is part of: Physical Review Letters, 2020, vol. 124, num. 3, p. 031801
URI: http://hdl.handle.net/2445/174978
Related resource: https://doi.org/10.1103/PhysRevLett.124.031801
ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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