Observation of Several Sources of CP Violation in B+ →π+π+π- Decays

LHCb Collaboration

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

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 (US)
Article number031801
JournalPhysical Review Letters
Volume124
Issue number3
DOIs
StatePublished - Jan 21 2020

ASJC Scopus subject areas

  • General Physics and Astronomy

Fingerprint

Dive into the research topics of 'Observation of Several Sources of CP Violation in B+ →π+π+π- Decays'. Together they form a unique fingerprint.

Cite this