Measurement of the D <inf>s</inf><sup>+</sup>-D <inf>s</inf><sup>-</sup> production asymmetry in 7 TeV pp collisions

R. Aaij, C. Abellan Beteta, A. Adametz, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, Y. Amhis, J. Anderson, R. B. Appleby, O. Aquines GutierrezF. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, S. Bachmann, J. J. Back, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, A. Bates, C. Bauer, Th Bauer, A. Bay, J. Beddow, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, M. Benayoun, G. Bencivenni, S. Benson, J. Benton, R. Bernet, M. O. Bettler, M. van Beuzekom, A. Bien, S. Bifani, T. Bird, A. Bizzeti, P. M. Bjørnstad, T. Blake, F. Blanc, C. Blanks, J. Blouw, S. Blusk, A. Bobrov, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, T. J.V. Bowcock, C. Bozzi, T. Brambach, J. van den Brand, J. Bressieux, D. Brett, M. Britsch, T. Britton, N. H. Brook, H. Brown, A. Büchler-Germann, I. Burducea, A. Bursche, J. Buytaert, S. Cadeddu, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, A. Carbone, G. Carboni, R. Cardinale, A. Cardini, L. Carson, K. Carvalho Akiba, G. Casse

Resultado de la investigación

53 Citas (Scopus)

Resumen

Heavy quark production in 7 TeV centre-of-mass energy pp collisions at the LHC is not necessarily flavour symmetric. The production asymmetry, A P, between Ds+ and Ds- mesons is studied using the φπ ± decay mode in a data sample of 1.0fb -1 collected with the LHCb detector. The difference between π + and π - detection efficiencies is determined using the ratios of fully reconstructed to partially reconstructed D ± decays. The overall production asymmetry in the Ds± rapidity region 2.0 to 4.5 with transverse momentum larger than 2 GeV is measured to be A P=(-0.33±0.22±0.10)%. This result can constrain models of heavy flavour production. © 2012 CERN.
Idioma originalEnglish
Páginas (desde-hasta)186-195
Número de páginas10
PublicaciónPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
DOI
EstadoPublished - 9 jul 2012
Publicado de forma externa

    Huella digital

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Citar esto

Aaij, R., Abellan Beteta, C., Adametz, A., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amhis, Y., Anderson, J., Appleby, R. B., ... Casse, G. (2012). Measurement of the D <inf>s</inf><sup>+</sup>-D <inf>s</inf><sup>-</sup> production asymmetry in 7 TeV pp collisions. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 186-195. https://doi.org/10.1016/j.physletb.2012.06.001