# Search for CP violation using triple product asymmetries in $\Lambda{_b}{^0} \to pK^-\pi^+\pi^-, \Lambda{_b}{^0} \to pK^-K^+K^-$ and $\Xi{_b}{^0} \to pK^-K^-\pi^+$ decays

LHCb Collaboration; Bernet, R; Müller, K; Serra, N; Steinkamp, O; Straumann, U; Vollhardt, A; et al (2018). Search for CP violation using triple product asymmetries in $\Lambda{_b}{^0} \to pK^-\pi^+\pi^-, \Lambda{_b}{^0} \to pK^-K^+K^-$ and $\Xi{_b}{^0} \to pK^-K^-\pi^+$ decays. Journal of High Energy Physics, 08:039.

## Abstract

A search for CP and P violation using triple-product asymmetries is performed with Λ b 0  → pK−π+π−, Λ b 0  → pK−K+K− and Ξ b 0  → pK−K−π+ decays. The data sample corresponds to integrated luminosities of 1.0 fb−1 and 2.0 fb−1, recorded with the LHCb detector at centre-of-mass energies of 7 TeV and 8 TeV, 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 Λ b 0  → pK−χc0(1P)(→π+π−, K+K−) decay is also reported.

## Abstract

A search for CP and P violation using triple-product asymmetries is performed with Λ b 0  → pK−π+π−, Λ b 0  → pK−K+K− and Ξ b 0  → pK−K−π+ decays. The data sample corresponds to integrated luminosities of 1.0 fb−1 and 2.0 fb−1, recorded with the LHCb detector at centre-of-mass energies of 7 TeV and 8 TeV, 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 Λ b 0  → pK−χc0(1P)(→π+π−, K+K−) decay is also reported.

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