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Measurement of the B+c meson lifetime using B+c → J/ψ μ+ νμ X decays

  • Author(s): Aaij, R
  • Adeva, B
  • Adinolfi, M
  • Affolder, A
  • Ajaltouni, Z
  • Albrecht, J
  • Alessio, F
  • Alexander, M
  • Ali, S
  • Alkhazov, G
  • Cartelle, PA
  • Alves-Jr., AA
  • Amato, S
  • Amerio, S
  • Amhis, Y
  • Anderlini, L
  • Anderson, J
  • Andreassen, R
  • Andreotti, M
  • Andrews, JE
  • Appleby, RB
  • Gutierrez, OA
  • Archilli, F
  • Artamonov, A
  • Artuso, M
  • Aslanides, E
  • Auriemma, G
  • Baalouch, M
  • Bachmann, S
  • Back, JJ
  • Badalov, A
  • Balagura, V
  • Baldini, W
  • Barlow, RJ
  • Barschel, C
  • Barsuk, S
  • Barter, W
  • Batozskaya, V
  • Bauer, T
  • Bay, A
  • Beddow, J
  • Bedeschi, F
  • Bediaga, I
  • Belogurov, S
  • Belous, K
  • Belyaev, I
  • Ben-Haim, E
  • Bencivenni, G
  • Benson, S
  • Benton, J
  • Berezhnoy, A
  • Bernet, R
  • Bettler, MO
  • Van Beuzekom, M
  • Bien, A
  • Bifani, S
  • Bird, T
  • Bizzeti, A
  • Bjørnstad, PM
  • Blake, T
  • Blanc, F
  • Blouw, J
  • Blusk, S
  • Bocci, V
  • Bondar, A
  • Bondar, N
  • Bonivento, W
  • Borghi, S
  • Borgia, A
  • Borsato, M
  • Bowcock, TJV
  • Bowen, E
  • Bozzi, C
  • Brambach, T
  • Van Den Brand, J
  • Bressieux, J
  • Brett, D
  • Britsch, M
  • Britton, T
  • Brook, NH
  • Brown, H
  • Bursche, A
  • Busetto, G
  • Buytaert, J
  • Cadeddu, S
  • Calabrese, R
  • Callot, O
  • Calvi, M
  • Gomez, MC
  • Camboni, A
  • Campana, P
  • et al.
Abstract

© 2014, CERN for the benefit of the LHCb collaboration. The lifetime of the B+c meson is measured using semileptonic decays having a J/ψ meson and a muon in the final state. The data, corresponding to an integrated luminosity of 2 fb−1, are collected by the LHCb detector in pp collisions at a centre-of-mass energy of 8 TeV. The measured lifetime is τ = 509 ± 8 ± 12 fs, where the first uncertainty is statistical and the second is systematic.

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