Study of the kinematic dependences of Λ<inf>b</inf><sup>0</sup> production in pp collisions and a measurement of the Λ<inf>b</inf><sup>0</sup>  → Λ<inf>c</inf><sup>+</sup> π<sup>−</sup> branching fraction

R. Aaij, 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. Andreassen, M. AndreottiJ. 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, Th 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, M. Calvo Gomez

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59 Citas (Scopus)

Resumen

The kinematic dependences of the relative production rates, (formula presented), of Λ 0 b baryons and B 0 mesons are measured using Λ 0 b  → Λ c + π and (formula presented) decays. The measurements use proton-proton collision data, corresponding to an integrated luminosity of 1 fb −1 at a centre-of-mass energy of 7 TeV, recorded in the forward region with the LHCb experiment. The relative production rates are observed to depend on the transverse momentum, p T, and pseudorapidity, η, of the beauty hadron, in the studied kinematic region 1.5 < p T < 40 GeV/c and 2 < η < 5. Using a previous LHCb measurement of (formula presented) in semileptonic decays, the branching fraction (formula presented) is obtained, where the first uncertainty is statistical, the second is systematic, the third is from the previous LHCb measurement of (formula presented) and the fourth is due to the (formula presented) branching fraction. This is the most precise measurement of a Λ b 0 branching fraction to date.

Idioma originalEnglish
Número de artículo143
Páginas (desde-hasta)1-18
Número de páginas18
PublicaciónJournal of High Energy Physics
Volumen2014
N.º8
DOI
EstadoPublished - 1 ene 2014
Publicado de forma externa

Nota bibliográfica

Publisher Copyright:
© CERN, for the benefit of the LHCb Collaboration.

All Science Journal Classification (ASJC) codes

  • Física nuclear y de alta energía

Huella

Profundice en los temas de investigación de 'Study of the kinematic dependences of Λ<inf>b</inf><sup>0</sup> production in pp collisions and a measurement of the Λ<inf>b</inf><sup>0</sup>  → Λ<inf>c</inf><sup>+</sup> π<sup>−</sup> branching fraction'. En conjunto forman una huella única.

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