Search for CP violation using triple product asymmetries in Λ⁰_b→ pK^-π⁺π^-, Λ⁰_b→ pK^-K⁺K^- and Ξ⁰_b→ pK^-K^-π⁺ decays

2018/05/31 by LHCb collaboration, R. Aaij, B. Adeva +791 · 1 citation
Physics and Astronomy · #hep-ex

paper · pdf · doi:10.1007/jhep08(2018)039

published as JHEP 08 (2018) 039 · 26 pages including author list, 10 figures

arxiv created 2018/08/20 · arxiv updated 2018/08/21

Abstract

A search for CP and P violation using triple-product asymmetries is performed with Λ⁰_b→ pK^-π⁺π^-, Λ⁰_b→ pK^-K⁺K^- and Ξ⁰_b→ pK^-K^-π⁺ decays. The data sample corresponds to integrated luminosities of 1.0fb^-1 and 2.0fb^-1, recorded with the LHCb detector at centre-of-mass energies of 7TeV and 8TeV, respectively. The CP- and P-violating asymmetries are measured both integrating over all phase space and in specific phase-space regions. No significant deviation from CP or P symmetry is found. The first observation of Λ⁰_b→ pK^-χ_c0(1P)(→π⁺π^-, K⁺K^-) decay is also reported.

Cited by

• CP-violation and U-spin symmetry in four-body bottom baryon decays