Authors
Roel Aaij, Bernardo Adeva, Marco Adinolfi, Anthony Affolder, Ziad Ajaltouni, Simon Akar, Johannes Albrecht, Federico Alessio, Michael Alexander, Suvayu Ali, G Alkhazov, P Alvarez Cartelle, AA Alves Jr, S Amato, Silvia Amerio, Y Amhis, L An, L Anderlini, J Anderson, G Andreassi, Mirco Andreotti, JE Andrews, RB Appleby, O Aquines Gutierrez, F Archilli, P d’Argent, A Artamonov, M Artuso, E Aslanides, Giulio Auriemma, M Baalouch, S Bachmann, JJ Back, A Badalov, C Baesso, W Baldini, RJ Barlow, C Barschel, S Barsuk, W Barter, V Batozskaya, V Battista, A Bay, L Beaucourt, J Beddow, F Bedeschi, I Bediaga, LJ Bel, V Bellee, N Belloli, I Belyaev, E Ben-Haim, G Bencivenni, S Benson, J Benton, A Berezhnoy, R Bernet, Alessandro Bertolin, M-O Bettler, M Van Beuzekom, A Bien, S Bifani, P Billoir, T Bird, A Birnkraut, A Bizzeti, T Blake, F Blanc, J Blouw, S Blusk, V Bocci, A Bondar, N Bondar, W Bonivento, S Borghi, M Borsato, TJV Bowcock, E Bowen, C Bozzi, S Braun, M Britsch, T Britton, J Brodzicka, NH Brook, A Bursche, J Buytaert, S Cadeddu, Roberto Calabrese, M Calvi, M Calvo Gomez, P Campana, D Campora Perez, L Capriotti, Angelo Carbone, G Carboni, R Cardinale, A Cardini, P Carniti, L Carson, K Carvalho Akiba, G Casse, L Cassina, L Castillo Garcia, M Cattaneo, Ch Cauet, G Cavallero, Riccardo Cenci, M Charles, Ph Charpentier, M Chefdeville, S Chen, S-F Cheung, N Chiapolini, M Chrzaszcz, X Cid Vidal, G Ciezarek, PEL Clarke, M Clemencic, HV Cliff, J Closier, V Coco, J Cogan, E Cogneras, V Cogoni, L Cojocariu, G Collazuol, P Collins, A Comerma-Montells, A Contu, A Cook, M Coombes, S Coquereau, G Corti, M Corvo, B Couturier, GA Cowan, DC Craik, A Crocombe, M Cruz Torres, S Cunliffe, R Currie, C D’Ambrosio, E Dall’Occo, J Dalseno, PNY David, A Davis, K De Bruyn, S De Capua, M De Cian, JM De Miranda
Publication date
2015/8/14
Journal
Physical review letters
Volume
115
Issue
7
Pages
072001
Publisher
American Physical Society
Description
Observations of exotic structures in the channel, which we refer to as charmonium-pentaquark states, in decays are presented. The data sample corresponds to an integrated luminosity of acquired with the LHCb detector from 7 and 8 TeV collisions. An amplitude analysis of the three-body final state reproduces the two-body mass and angular distributions. To obtain a satisfactory fit of the structures seen in the mass spectrum, it is necessary to include two Breit-Wigner amplitudes that each describe a resonant state. The significance of each of these resonances is more than 9 standard deviations. One has a mass of and a width of , while the second is narrower, with a mass of and a width of . The preferred assignments are of opposite parity, with one state having spin and the other .
Scholar articles
R Aaij, B Adeva, M Adinolfi, A Affolder, Z Ajaltouni… - Physical review letters, 2015