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Amplitude analysis of B+ →j /ψφK+ 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;
  • Aquines Gutierrez, O;
  • 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;
  • Baldini, W;
  • Barlow, RJ;
  • Barschel, C;
  • Barsuk, S;
  • Barter, W;
  • 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;
  • Burr, C;
  • Bursche, A;
  • Buytaert, J;
  • Cadeddu, S;
  • Calabrese, R;
  • Calvi, M;
  • Calvo Gomez, M
  • et al.

Published Web Location

http://doi.org/10.1103/PhysRevD.95.012002
No data is associated with this publication.
Abstract

The first full amplitude analysis of B+→J/ψφK+ with J/ψ→μ+μ-, φ→K+K- decays is performed with a data sample of 3 fb-1 of pp collision data collected at s=7 and 8 TeV with the LHCb detector. The data cannot be described by a model that contains only excited kaon states decaying into φK+, and four J/ψφ structures are observed, each with significance over 5 standard deviations. The quantum numbers of these structures are determined with significance of at least 4 standard deviations. The lightest has mass consistent with, but width much larger than, previous measurements of the claimed X(4140) state. The model includes significant contributions from a number of expected kaon excitations, including the first observation of the K∗(1680)+→φK+ transition.

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