Evidence for a B_{s}^{0}π^{±} State.
Journal: Physical Review Letters
Published:
Abstract
We report evidence for a narrow structure, X(5568), in the decay sequence X(5568)→B_{s}^{0}π^{±}, B_{s}^{0}→J/ψϕ, J/ψ→μ^{+}μ^{-}, ϕ→K^{+}K^{-}. This is evidence for the first instance of a hadronic state with valence quarks of four different flavors. The mass and natural width of this state are measured to be m=5567.8±2.9(stat)_{-1.9}^{+0.9}(syst) MeV/c^{2} and Γ=21.9±6.4(stat)_{-2.5}^{+5.0}(syst) MeV/c^{2}. If the decay is X(5568)→B_{s}^{*}π^{±}→B_{s}^{0}γπ^{±} with an unseen γ, m(X(5568)) will be shifted up by m(B_{s}^{*})-m(B_{s}^{0})∼49 MeV/c^{2}. This measurement is based on 10.4 fb^{-1} of pp[over ¯] collision data at sqrt[s]=1.96 TeV collected by the D0 experiment at the Fermilab Tevatron collider.
Authors
V Abazov, B Abbott, B Acharya, M Adams, T Adams, J Agnew, G Alexeev, G Alkhazov, A Alton, A Askew, S Atkins, K Augsten, V Aushev, Y Aushev, C Avila, F Badaud, L Bagby, B Baldin, D Bandurin, S Banerjee, E Barberis, P Baringer, J Bartlett, U Bassler, V Bazterra, A Bean, M Begalli, L Bellantoni, S Beri, G Bernardi, R Bernhard, I Bertram, M Besançon, R Beuselinck, P Bhat, S Bhatia, V Bhatnagar, G Blazey, S Blessing, K Bloom, A Boehnlein, D Boline, E Boos, G Borissov, M Borysova, A Brandt, O Brandt, M Brochmann, R Brock, A Bross, D Brown, X Bu, M Buehler, V Buescher, V Bunichev, S Burdin, C Buszello, E Camacho Pérez, B C Casey, H Castilla Valdez, S Caughron, S Chakrabarti, K Chan, A Chandra, E Chapon, G Chen, S Cho, S Choi, B Choudhary, S Cihangir, D Claes, J Clutter, M Cooke, W Cooper, M Corcoran, F Couderc, M-c Cousinou, J Cuth, D Cutts, A Das, G Davies, S De Jong, E De La Cruz Burelo, F Déliot, R Demina, D Denisov, S Denisov, S Desai, C Deterre, K Devaughan, H Diehl, M Diesburg, P Ding, A Dominguez, A Drutskoy, A Dubey, L Dudko, A Duperrin, S Dutt, M Eads, D Edmunds, J Ellison, V Elvira, Y Enari, H Evans, A Evdokimov, V Evdokimov, A Fauré, L Feng, T Ferbel, F Fiedler, F Filthaut, W Fisher, H Fisk, M Fortner, H Fox, J Franc, S Fuess, P Garbincius, A Garcia Bellido, J García González, V Gavrilov, W Geng, C Gerber, Y Gershtein, G Ginther, O Gogota, G Golovanov, P Grannis, S Greder, H Greenlee, G Grenier, Ph Gris, J-f Grivaz, A Grohsjean, S Grünendahl, M Grünewald, T Guillemin, G Gutierrez, P Gutierrez, J Haley, L Han, K Harder, A Harel, J Hauptman, J Hays, T Head, T Hebbeker, D Hedin, H Hegab, A Heinson, U Heintz, C Hensel, I Heredia De La Cruz, K Herner, G Hesketh, M Hildreth, R Hirosky, T Hoang, J Hobbs, B Hoeneisen, J Hogan, M Hohlfeld, J Holzbauer, I Howley, Z Hubacek, V Hynek, I Iashvili, Y Ilchenko, R Illingworth, A Ito, S Jabeen, M Jaffré, A Jayasinghe, M Jeong, R Jesik, P Jiang, K Johns, E Johnson, M Johnson, A Jonckheere, P Jonsson, J Joshi, A Jung, A Juste, E Kajfasz, D Karmanov, I Katsanos, M Kaur, R Kehoe, S Kermiche, N Khalatyan, A Khanov, A Kharchilava, Y Kharzheev, I Kiselevich, J Kohli, A Kozelov, J Kraus, A Kumar, A Kupco, T Kurča, V Kuzmin, S Lammers, P Lebrun, H Lee, S Lee, W Lee, X Lei, J Lellouch, D Li, H Li, L Li, Q Li, J Lim, D Lincoln, J Linnemann, V Lipaev, R Lipton, H Liu, Y Liu, A Lobodenko, M Lokajicek, R Lopes De Sa, R Luna Garcia, A Lyon, A Maciel, R Madar, R Magaña Villalba, S Malik, V Malyshev, J Mansour, J Martínez Ortega, R Mccarthy, C Mcgivern, M Meijer, A Melnitchouk, D Menezes, P Mercadante, M Merkin, A Meyer, J Meyer, F Miconi, N Mondal, M Mulhearn, E Nagy, M Narain, R Nayyar, H Neal, J Negret, P Neustroev, H Nguyen, T Nunnemann, J Orduna, N Osman, A Pal, N Parashar, V Parihar, S Park, R Partridge, N Parua, A Patwa, B Penning, M Perfilov, Y Peters, K Petridis, G Petrillo, P Pétroff, M-a Pleier, V Podstavkov, A Popov, M Prewitt, D Price, N Prokopenko, J Qian, A Quadt, B Quinn, P Ratoff, I Razumov, I Ripp Baudot, F Rizatdinova, M Rominsky, A Ross, C Royon, P Rubinov, R Ruchti, G Sajot, A Sánchez Hernández, M Sanders, A Santos, G Savage, M Savitskyi, L Sawyer, T Scanlon, R Schamberger, Y Scheglov, H Schellman, M Schott, C Schwanenberger, R Schwienhorst, J Sekaric, H Severini, E Shabalina, V Shary, S Shaw, A Shchukin, V Simak, P Skubic, P Slattery, G Snow, J Snow, S Snyder, S Söldner Rembold, L Sonnenschein, K Soustruznik, J Stark, N Stefaniuk, D Stoyanova, M Strauss, L Suter, P Svoisky, M Titov, V Tokmenin, Y-t Tsai, D Tsybychev, B Tuchming, C Tully, L Uvarov, S Uvarov, S Uzunyan, R Van Kooten, W Van Leeuwen, N Varelas, E Varnes, I Vasilyev, A Verkheev, L Vertogradov, M Verzocchi, M Vesterinen, D Vilanova, P Vokac, H Wahl, M H L Wang, J Warchol, G Watts, M Wayne, J Weichert, L Welty Rieger, M R Williams, G Wilson, M Wobisch, D Wood, T Wyatt, Y Xie, R Yamada, S Yang, T Yasuda, Y Yatsunenko, W Ye, Z Ye, H Yin, K Yip, S Youn, J Yu, J Zennamo, T Zhao, B Zhou, J Zhu, M Zielinski, D Zieminska, L Zivkovic