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Study of the D0p amplitude in Λb0→ D0decays

  • Author(s): Aaij, R
  • Adeva, B
  • Adinolfi, M
  • Ajaltouni, Z
  • Akar, S
  • Albrecht, J
  • Alessio, F
  • Alexander, M
  • Ali, S
  • Alkhazov, G
  • Cartelle, PA
  • 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
  • Romeu, JA
  • Artamonov, A
  • Artuso, M
  • Aslanides, E
  • Auriemma, G
  • Baalouch, M
  • Babuschkin, I
  • Bachmann, S
  • Back, JJ
  • Badalov, A
  • Baesso, C
  • Baker, S
  • Balagura, V
  • Baldini, W
  • Barlow, RJ
  • Barschel, C
  • Barsuk, S
  • Barter, W
  • Baryshnikov, F
  • Baszczyk, M
  • Batozskaya, V
  • Batsukh, B
  • Battista, V
  • Bay, A
  • Beaucourt, L
  • Beddow, J
  • Bedeschi, F
  • Bediaga, I
  • Beiter, A
  • Bel, LJ
  • Bellee, V
  • Belloli, N
  • Belous, K
  • Belyaev, I
  • Ben-Haim, E
  • Bencivenni, G
  • Benson, S
  • Berezhnoy, A
  • Bernet, R
  • Bertolin, A
  • Betancourt, C
  • 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
  • Bordyuzhin, I
  • Borgheresi, A
  • Borghi, S
  • Borisyak, M
  • Borsato, M
  • Bossu, F
  • Boubdir, M
  • Bowcock, TJV
  • Bowen, E
  • Bozzi, C
  • et al.

Published Web Location

http://doi.org/10.1007/JHEP05(2017)030
No data is associated with this publication.
Abstract

© 2017, The Author(s). An amplitude analysis of the decay Λb0→ D0pπ−is performed in the part of the phase space containing resonances in the D0p channel. The study is based on a data sample corresponding to an integrated luminosity of 3.0 fb−1of pp collisions recorded by the LHCb experiment. The spectrum of excited Λc+states that decay into D0p is studied. The masses, widths and quantum numbers of the Λc(2880)+and Λc(2940)+resonances are measured. The constraints on the spin and parity for the Λc(2940)+state are obtained for the first time. A near-threshold enhancement in the D0p amplitude is investigated and found to be consistent with a new resonance, denoted the Λc(2860)+, of spin 3/2 and positive parity.

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