Study of beauty hadron decays into Pairs of charm hadrons

R. Aaij, A. Abba, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, 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, J. Anderson, R. AndreassenM. Andreotti, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, A. Badalov, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, V. Batozskaya, T. Bauer, A. Bay, J. Beddow, F. Bedeschi, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, J. Benton, A. Berezhnoy, R. Bernet, M. O. Bettler, M. Van Beuzekom, A. Bien, S. Bifani, T. Bird, A. Bizzeti, P. M. Bjørnstad, T. Blake, F. Blanc, J. Blouw, S. Blusk, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, M. Borsato, T. J.V. Bowcock, E. Bowen, C. Bozzi, T. Brambach, J. Van Den Brand, J. Bressieux, D. Brett, M. Britsch, T. Britton, N. H. Brook, H. Brown, A. Bursche, G. Busetto, J. Buytaert, S. Cadeddu, R. Calabrese, O. Callot, M. Calvi

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Abstract

First observations of the decays Λ 0 b → Λ c+D - (s) are reported using data corresponding to an integrated luminosity of 3 fb -1 collected at 7 and 8 TeV center-of-mass energies in proton-proton collisions with the LHCb detector. In addition, the most precise measurement of the branching fraction B(B 0 s → D +D - s) is made and a search is performed for the decays B 0 (s) → Λ c +Λ c -. The results obtained are (Equastion presented) Measurement of the mass of the Λ 0 b baryon relative to the B¯ 0 meson gives M(Λ 0 b) - M(B¯ 0) = 339.72±0.24(stat) ± 0.18(syst) MeV=c 2. This result provides the most precise measurement of the mass of the Λ b 0 baryon to date.

Original languageEnglish
Article number202001
JournalPhysical Review Letters
Volume112
Issue number20
DOIs
Publication statusPublished - 21 May 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Aaij, R., Abba, A., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., ... Calvi, M. (2014). Study of beauty hadron decays into Pairs of charm hadrons. Physical Review Letters, 112(20), [202001]. https://doi.org/10.1103/PhysRevLett.112.202001