Observation of several sources of CP violation in B+ →π+π+π- decays

LHCb Collaboration

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26 Citations (Scopus)
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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.

Original languageEnglish
Article number031801
Number of pages1
JournalPhysical Review Letters
Volume124
Issue number3
Early online date21 Jan 2020
DOIs
Publication statusPublished - 24 Jan 2020

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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