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Measurement of J/ψ polarization in pp collisions at √s = 7 TeV

  • Author(s): Aaij, R
  • Beteta, CA
  • Adeva, B
  • Adinolfi, M
  • Adrover, C
  • Affolder, A
  • Ajaltouni, Z
  • Albrecht, J
  • Alessio, F
  • Alexander, M
  • Ali, S
  • Alkhazov, G
  • Cartelle, PA
  • Alves, AA
  • Amato, S
  • Amerio, S
  • Amhis, Y
  • Anderlini, L
  • Anderson, J
  • Andreassen, R
  • Appleby, RB
  • Gutierrez, OA
  • Archilli, F
  • Artamonov, A
  • Artuso, M
  • Aslanides, E
  • Auriemma, G
  • Bachmann, S
  • Back, JJ
  • Baesso, C
  • Balagura, V
  • Baldini, W
  • Barlow, RJ
  • Barschel, C
  • Barsuk, S
  • Barter, W
  • Bauer, T
  • Bay, A
  • Beddow, J
  • Bedeschi, F
  • Bediaga, I
  • Belogurov, S
  • Belous, K
  • Belyaev, I
  • Ben-Haim, E
  • Benayoun, M
  • 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
  • Bowcock, TJV
  • Bowen, E
  • Bozzi, C
  • Brambach, T
  • Van Den Brand, J
  • Bressieux, J
  • Brett, D
  • Britsch, M
  • Britton, T
  • Brook, NH
  • Brown, H
  • Burducea, I
  • Bursche, A
  • Busetto, G
  • Buytaert, J
  • Cadeddu, S
  • Callot, O
  • Calvi, M
  • Gomez, MC
  • Camboni, A
  • Campana, P
  • et al.
Abstract

© 2013, CERN for the benefit of the LHCb collaboration. An angular analysis of the decay J/ψ → μ+ μ is performed to measure the polarization of prompt J/ψ mesons produced in pp collisions at √s = 7 TeV. The dataset corresponds to an integrated luminosity of 0.37 fb−1 collected with the LHCb detector. The measurement is presented as a function of transverse momentum, pT, and rapidity, y, of the J/ψ meson, in the kinematic region 2 < pT < 15 GeV/c and 2.0 < y < 4.5.

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