Search for CP violation and observation of P violation in Λ0b→ pππ+π decays

LHCb Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

A search for CP violation in the Λ0b → pππ+π decay is performed using LHCb data corresponding to an integrated luminosity of 6.6 fb1 collected in pp collisions at centre-of-mass energies of 7, 8 and 13 TeV. The analysis uses both triple product asymmetries and the unbinned energy test method. The highest significances of CP asymmetry are 2.9 standard deviations from triple product asymmetries and 3.0 standard deviations for the energy test method. Once the global p-value is considered, all results are consistent with no CP violation. Parity violation is observed at a significance of 5.5 standard deviations for the triple product asymmetry method and 5.3 standard deviations for the energy test method.

Original languageEnglish (US)
JournalUnknown Journal
StatePublished - Dec 23 2019

ASJC Scopus subject areas

  • General

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