| Title: | Observation of a peaking structure in the J/ψφ mass spectrum from B→J/ψφK decays | 
| Authors: | Chatrchyan, S Khachatryan, V
 Sirunyan, AM
 Tumasyan, A
 Adam, W
 Bergauer, T
 Dragicevic, M
 Erö, J
 Fabjan, C
 Friedl, M
 Frühwirth, R
 Schmitt, M
 Fiorendi, S
 Gennai, S
 Ghezzi, A
 Govoni, P
 Seva, T
 Lucchini, MT
 Malvezzi, S
 Manzoni, RA
 Martelli, A
 Kirsanov, M
 Stoynev, S
 Giordano, D
 Menasce, D
 Moroni, L
 Paganoni, M
 Pedrini, D
 Ragazzi, S
 Redaelli, N
 Thomas, L
 Tabarelli de Fatis, T
 Buontempo, S
 Velasco, M
 Cavallo, N
 Girone, M
 De Cosa, A
 Fabozzi, F
 Iorio, AOM
 Lista, L
 Meola, S
 Merola, M
 Paolucci, P
 Vander Velde, C
 Won, S
 Azzi, P
 Bacchetta, N
 Giunta, M
 Bellato, M
 Bisello, D
 Branca, A
 Carlin, R
 Checchia, P
 Dorigo, T
 Galanti, M
 Berry, D
 Gasparini, F
 Vanlaer, P
 Gasparini, U
 Glege, F
 Giubilato, P
 Gonella, F
 Gozzelino, A
 Kanishchev, K
 Lacaprara, S
 Lazzizzera, I
 Brinkerhoff, A
 Margoni, M
 Meneguzzo, AT
 Montecassiano, F
 Wang, J
 Gomez-Reino Garrido, R
 Pazzini, J
 Pozzobon, N
 Ronchese, P
 Simonetto, F
 Torassa, E
 Chan, KM
 Tosi, M
 Vanini, S
 Zotto, P
 Zucchetta, A
 Zumerle, G
 Gowdy, S
 Adler, V
 Gabusi, M
 Ratti, SP
 Riccardi, C
 Sanabria, JC
 Vitulo, P
 Biasini, M
 Bilei, GM
 Fanò, L
 Lariccia, P
 Mantovani, G
 Guida, R
 Menichelli, M
 Beernaert, K
 Nappi, A
 Hildreth, M
 Romeo, F
 Saha, A
 Santocchia, A
 Spiezia, A
 Androsov, K
 Azzurri, P
 Bagliesi, G
 Hammer, J
 Bernardini, J
 Boccali, T
 Jessop, C
 Benucci, L
 Broccolo, G
 Castaldi, R
 D'Agnolo, RT
 Dell'Orso, R
 Fiori, F
 Foà, L
 Giassi, A
 Hansen, M
 Grippo, MT
 Garcia-Abia, P
 Redondo, I
 Kraan, A
 Ligabue, F
 Cimmino, A
 Lomtadze, T
 Martini, L
 Messineo, A
 Palla, F
 Rizzi, A
 Serban, AT
 Piotrzkowski, K
 Karmgard, DJ
 Spagnolo, P
 Squillacioti, P
 Tenchini, R
 Tonelli, G
 Costantini, S
 Venturi, A
 Verdini, PG
 Vernieri, C
 Barone, L
 Cavallari, F
 Kolb, J
 Krasnikov, N
 Harris, P
 Del Re, D
 Diemoz, M
 Grassi, M
 Longo, E
 Margaroli, F
 Dildick, S
 Meridiani, P
 Micheli, F
 Lannon, K
 Nourbakhsh, S
 Organtini, G
 Hartl, C
 Paramatti, R
 Rahatlou, S
 Soffi, L
 Amapane, N
 Arcidiacono, R
 Argiro, S
 Garcia, G
 Luo, W
 Arneodo, M
 Biino, C
 Cartiglia, N
 Hinzmann, A
 Casasso, S
 Costa, M
 Demaria, N
 Mariotti, C
 Maselli, S
 Migliore, E
 Lynch, S
 Monaco, V
 Klein, B
 Musich, M
 Obertino, MM
 Innocente, V
 Ortona, G
 Pastrone, N
 Pelliccioni, M
 Potenza, A
 Romero, A
 Marinelli, N
 Ruspa, M
 Sacchi, R
 Solano, A
 Lellouch, J
 Staiano, A
 Janot, P
 Tamponi, U
 Belforte, S
 Candelise, V
 Casarsa, M
 Morse, DM
 Cossutti, F
 Della Ricca, G
 Gobbo, B
 La Licata, C
 Marone, M
 Marinov, A
 Karavakis, E
 Montanino, D
 Penzo, A
 Schizzi, A
 Pearson, T
 Zanetti, A
 Chang, S
 Kim, TY
 Nam, SK
 Kim, DH
 Kim, GN
 Kim, JE
 Kousouris, K
 Mccartin, J
 Kong, DJ
 Godinovic, N
 Oh, YD
 Park, H
 Son, DC
 Kim, JY
 Kim, ZJ
 Song, S
 Choi, S
 Gyun, D
 Krajczar, K
 Hong, B
 Roland, G
 Planer, M
 Ocampo Rios, AA
 Jo, M
 Kim, H
 Kim, TJ
 Lee, KS
 Park, SK
 Roh, Y
 Choi, M
 Kim, JH
 Lecoq, P
 Bruno, G
 Park, C
 Park, IC
 Ryckbosch, D
 Park, S
 Ryu, G
 Choi, Y
 Choi, YK
 Goh, J
 Kim, MS
 Kwon, E
 Hollar, J
 Lee, Y-J
 Lee, B
 Lee, J
 Lee, S
 Sigamani, M
 Seo, H
 Yu, I
 Grigelionis, I
 Juodagalvis, A
 Castilla-Valdez, H
 Ruchti, R
 De La Cruz-Burelo, E
 Pashenkov, A
 Popov, A
 Heredia-de La Cruz, I
 Lopez-Fernandez, R
 Martínez-Ortega, J
 Sanchez-Hernandez, A
 Strobbe, N
 Villasenor-Cendejas, LM
 Carrillo Moreno, S
 Slaunwhite, J
 Vazquez Valencia, F
 Salazar Ibarguen, HA
 Casimiro Linares, E
 Lourenço, C
 Morelos Pineda, A
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 Krofcheck, D
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 Butler, PH
 Thyssen, F
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 Palichik, V
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 Lenzi, P
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 Paoletti, S
 Sguazzoni, G
 Pin, A
 Tropiano, A
 Benussi, L
 Quintario Olmeda, A
 Bianco, S
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 | 
| Keywords: | Peaking structure;Data sample;Integrated luminosity | 
| Issue Date: | 2014 | 
| Publisher: | Elsevier | 
| Citation: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 734, 261 - 281, 2014 | 
| Abstract: | A peaking structure in the J/ψφ mass spectrum near threshold is observed in B →J/ψφK decays, produced in pp collisions at √s=7 TeV collected with the CMS detector at the LHC. The data sample, selected on the basis of the dimuon decay mode of the J/ψ, corresponds to an integrated luminosity of 5.2 fb. Fitting the structure to an S-wave relativistic Breit-Wigner lineshape above a three-body phase-space nonresonant component gives a signal statistical significance exceeding five standard deviations. The fitted mass and width values are m = 4148.0 ± 2.4 (stat.) ± 6.3 (syst.)MeV and Γ=28 (stat.)±19(syst.)MeV, respectively. Evidence for an additional peaking structure at higher J/ψφ mass is also reported. © 2014 The Authors. | 
| URI: | http://www.sciencedirect.com/science/article/pii/S0370269314003657 http://bura.brunel.ac.uk/handle/2438/9992
 | 
| DOI: | http://dx.doi.org/10.1016/j.physletb.2014.05.055 | 
| ISSN: | 0370-2693 | 
| Appears in Collections: | Mathematical Physics 
 | 
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