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Measurement of the Ξb- and Ωb- baryon lifetimes

  • Author(s): Aaij, R
  • Adeva, B
  • Adinolfi, M
  • Affolder, A
  • Ajaltouni, Z
  • Albrecht, J
  • Alessio, F
  • Alexander, M
  • Ali, S
  • Alkhazov, G
  • Alvarez Cartelle, P
  • Alves, AA
  • Amato, S
  • Amerio, S
  • Amhis, Y
  • An, L
  • Anderlini, L
  • Anderson, J
  • Andreassen, R
  • Andreotti, M
  • Andrews, JE
  • Appleby, RB
  • Aquines Gutierrez, O
  • 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
  • Calvi, M
  • Calvo Gomez, M
  • et al.

Published Web Location

https://doi.org/10.1016/j.physletb.2014.06.064
No data is associated with this publication.
Abstract

Using a data sample of pp collisions corresponding to an integrated luminosity of 3 fb-1, the Ξb- and Ωb- baryons are reconstructed in the Ξb-→J/ψΞ- and Ωb-→J/ψΩ- decay modes and their lifetimes measured to beτ(Ξb-)=1.55-0.09+0.10(stat)±0.03(syst)ps,τ(Ωb-)=1.54-0.21+0.26(stat)±0.05(syst)ps. These are the most precise determinations to date. Both measurements are in good agreement with previous experimental results and with theoretical predictions. © 2014 The Authors.

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