Observations of Λ<inf>b</inf><sup>0</sup> → ΛK<sup>+</sup>π<sup>−</sup> and Λ<inf>b</inf><sup>0</sup> → ΛK<sup>+</sup> K<sup>−</sup> decays and searches for other Λ<inf>b</inf><sup>0</sup> and Ξ<inf>b</inf><sup>0</sup> decays to Λh<sup>+</sup> h′<sup>−</sup> final states

The LHCb collaboration, R. Aaij, C. Abellán Beteta, B. Adeva, M. Adinolfi, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, G. AndreassiM. Andreotti, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, P. d’Argent, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, A. Badalov, C. Baesso, S. Baker, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, V. Batozskaya, V. Battista, A. Bay, L. Beaucourt, J. Beddow, F. Bedeschi, I. Bediaga, L. J. Bel, V. Bellee, N. Belloli, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, J. Benton, A. Berezhnoy, R. Bernet, A. Bertolin, F. Betti, M. O. Bettler, M. van Beuzekom, S. Bifani, P. Billoir, T. Bird, A. Birnkraut, A. Bizzeti, T. Blake, F. Blanc, J. Blouw, S. Blusk, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, A. Borgheresi, S. Borghi, M. Borisyak, M. Borsato, M. Boubdir, T. J.V. Bowcock, E. Bowen, C. Bozzi, S. Braun, M. Britsch, T. Britton, J. Brodzicka, E. Buchanan, C. Burr, A. Bursche, J. Buytaert, S. Cadeddu

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Abstract

A search is performed for the charmless three-body decays of the Λ b 0 and Ξ b 0 baryons to the final states Λh +h′ , where h () = π or K. The analysis is based on a data sample, corresponding to an integrated luminosity of 3 fb −1 of pp collisions, collected by the LHCb experiment. The Λ b 0 → ΛK +π and Λ b 0 → ΛK +K decays are observed for the first time and their branching fractions and CP asymmetry parameters are measured. Evidence is seen for the Λ b 0 → Λπ +π decay and limits are set on the branching fractions of Ξ b 0 baryon decays to the Λh +h′ final states.

Original languageEnglish
Article number81
JournalJournal of High Energy Physics
Volume2016
Issue number5
DOIs
Publication statusPublished - 1 May 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016, The Author(s).

Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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