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First Experimental Study of Photon Polarization in Radiative Bs0 Decays

  • Author(s): Aaij, R
  • Adeva, B
  • Adinolfi, M
  • Ajaltouni, Z
  • Akar, S
  • 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
  • Andreassi, G
  • Andreotti, M
  • Andrews, JE
  • Appleby, RB
  • Archilli, F
  • D'Argent, P
  • Arnau Romeu, J
  • Artamonov, A
  • Artuso, M
  • Aslanides, E
  • Auriemma, G
  • Baalouch, M
  • Babuschkin, I
  • Bachmann, S
  • Back, JJ
  • Badalov, A
  • Baesso, C
  • Baker, S
  • Baldini, W
  • Barlow, RJ
  • Barschel, C
  • Barsuk, S
  • Barter, W
  • Baszczyk, M
  • Batozskaya, V
  • Batsukh, B
  • Battista, V
  • Bay, A
  • Beaucourt, L
  • Beddow, J
  • Bedeschi, F
  • Bediaga, I
  • Bel, LJ
  • Bellee, V
  • Belloli, N
  • Belous, K
  • Belyaev, I
  • Ben-Haim, E
  • Bencivenni, G
  • Benson, S
  • Benton, J
  • Berezhnoy, A
  • Bernet, R
  • Bertolin, A
  • Betti, F
  • Bettler, MO
  • Van Beuzekom, M
  • Bezshyiko, I
  • Bifani, S
  • Billoir, P
  • Bird, T
  • Birnkraut, A
  • Bitadze, A
  • Bizzeti, A
  • Blake, T
  • Blanc, F
  • Blouw, J
  • Blusk, S
  • Bocci, V
  • Boettcher, T
  • Bondar, A
  • Bondar, N
  • Bonivento, W
  • Borgheresi, A
  • Borghi, S
  • Borisyak, M
  • Borsato, M
  • Bossu, F
  • Boubdir, M
  • Bowcock, TJV
  • Bowen, E
  • Bozzi, C
  • Braun, S
  • Britsch, M
  • Britton, T
  • Brodzicka, J
  • Buchanan, E
  • et al.

Published Web Location

http://doi.org/10.1103/PhysRevLett.118.021801
No data is associated with this publication.
Abstract

© 2017 CERN. © 2017 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the »http://creativecommons.org/licenses/by/3.0/» Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. The polarization of photons produced in radiative Bs0 decays is studied for the first time. The data are recorded by the LHCb experiment in pp collisions corresponding to an integrated luminosity of 3 fb-1 at center-of-mass energies of 7 and 8 TeV. A time-dependent analysis of the Bs0→φγ decay rate is conducted to determine the parameter AΔ, which is related to the ratio of right- over left-handed photon polarization amplitudes in b→sγ transitions. A value of AΔ=-0.98-0.52+0.46-0.20+0.23 is measured. This result is consistent with the standard model prediction within 2 standard deviations.

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