Observations of Λ<i><sub>b</sub></i><SUP>0</SUP> → Λ<i>K</i><SUP>+</SUP>π<SUP>-</SUP> and Λ<i><sub>b</sub></i><SUP>0</SUP> → Λ<i>K</i><SUP>+</SUP><i>K</i><SUP>-</SUP> decays and searches for other Λ<i><sub>b</sub></i><SUP>0</SUP> and Ξ<i><sub>b</sub></i><SUP>0</SUP> decays to Λ<i>h</i><SUP>+</SUP><i>h</i>′<SUP>-</SUP> final states



Aaij, R, Beteta, C Abelian, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrechtl, J, Alessio, F, Alexander, M, Ali, S
et al (show 723 more authors) (2016) Observations of Λ<i><sub>b</sub></i><SUP>0</SUP> → Λ<i>K</i><SUP>+</SUP>π<SUP>-</SUP> and Λ<i><sub>b</sub></i><SUP>0</SUP> → Λ<i>K</i><SUP>+</SUP><i>K</i><SUP>-</SUP> decays and searches for other Λ<i><sub>b</sub></i><SUP>0</SUP> and Ξ<i><sub>b</sub></i><SUP>0</SUP> decays to Λ<i>h</i><SUP>+</SUP><i>h</i>′<SUP>-</SUP> final states. JOURNAL OF HIGH ENERGY PHYSICS, 05 (5). 081-.

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Abstract

A search is performed for the charmless three-body decays of the $\Lambda_b^0$ and $\Xi_b^0$ baryons to the final states $\Lambda h^+h^{\prime -}$, where $h^{(\prime)} = \pi$ or $K$. The analysis is based on a data sample, corresponding to an integrated luminosity of $3 \rm fb^{-1}$ of $pp$ collisions, collected by the LHCb experiment. The $\Lambda_b^0 \to \Lambda K^+\pi^-$ and $\Lambda_b^0 \to \Lambda K^+K^-$ decays are observed for the first time and their branching fractions and $CP$ asymmetry parameters are measured. Evidence is seen for the $\Lambda_b^0 \to \Lambda \pi^+\pi^-$ decay and limits are set on the branching fractions of $\Xi_b^0$ baryon decays to the $\Lambda h^+h^{\prime -}$ final states.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-004.html
Uncontrolled Keywords: Branching fraction, CP violation, Flavor physics, Rare decay, Hadron-Hadron scattering (experiments)
Depositing User: Symplectic Admin
Date Deposited: 07 Jun 2016 11:21
Last Modified: 17 Oct 2023 02:10
DOI: 10.1007/JHEP05(2016)081
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3001574