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Search for CP violation using triple product asymmetries in Λb 0 → pK − π + π −, Λb 0 → pK − K + K − and Ξb 0 → pK − K − π + decays

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Abstract: A search for CP and P violation using triple-product asymmetries is performed with Λ 0 b → pK−π +π −, Λ 0 b → pK−K+K− and Ξ0 b → 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 Pviolating 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 0 b → pK−χc0(1P)(→ π +π −, K+K−) decay is also reported.

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Journal of High Energy Physics, 2018, vol. 2018, num. 8, p. 1-27

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cc-by (c) LHCb Collaboration (UB: Alfonso Albero, A. et al., 2018

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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Large Hadron Collider (France and Switzerland)

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Search for CP violation using triple product asymmetries in Λb 0 → pK − π + π −, Λb 0 → pK − K + K − and Ξb 0 → pK − K − π + decays