Observation of a new $B_s^0 \pi^\pm$ state

We report the observation of a narrow structure, $X(5568)$, in the decay sequence $X(5568) \rightarrow B_s^0 \pi^{\pm}$, $B_s^0 \rightarrow J/\psi \phi$, $J/\psi\rightarrow \mu^+ \mu^-$, $\phi \rightarrow K^+K^-$. This is the first observation of a hadronic state with valence quarks of four differen...

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Detalles Bibliográficos
Autores principales: Abazov, V.M., Abbott, B., Acharya, B.S., Adams, M., Adams, T., Agnew, J.P., Alexeev, G.D., Alkhazov, G., Alton, A., Askew, A., Atkins, S., Augsten, K., Aushev, V., Aushev, Y., Avila, C., Badaud, F., Bagby, L., Baldin, B., Bandurin, D.V., Banerjee, S., Barberis, E., Baringer, P., Bartlett, J.F., Bassler, U., Bazterra, V., Bean, A., Begalli, M., Bellantoni, L., Beri, S.B., Bernardi, G., Bernhard, R., Bertram, I., Besancon, M., Beuselinck, R., Bhat, P.C., Bhatia, S., Bhatnagar, V., Blazey, G., Blessing, S., Bloom, K., Boehnlein, A., Boline, D., Boos, E.E., Borissov, G., Borysova, M., Brandt, A., Brandt, O., Brochmann, M., Brock, R., Bross, A., Brown, D., Bu, X.B., Buehler, M., Buescher, V., Bunichev, V., Burdin, S., Buszello, C.P., Camacho-Perez, E., Casey, B.C.K., Castilla-Valdez, H., Caughron, S., Chakrabarti, S., Chan, K.M., Chandra, A., Chapon, E., Chen, G., Cho, S.W., Choi, S., Choudhary, B., Cihangir, S., Claes, D., Clutter, J., Cooke, M., Cooper, W.E., Corcoran, M., Couderc, F., Cousinou, M.C., Cuth, J., Cutts, D., Das, A., Davies, G., de Jong, S.J., De La Cruz-Burelo, E., Deliot, F., Demina, R., Denisov, D., Denisov, S.P., Desai, S., Deterre, C., DeVaughan, K., Diehl, H.T., Diesburg, M., Ding, P.F., Dominguez, A., Drutskoy, A., Dubey, A., Dudko, L.V., Duperrin, A., Dutt, S., Eads, M., Edmunds, D., Ellison, J., Elvira, V.D., Enari, Y., Evans, H., Evdokimov, A., Evdokimov, V.N., Faure, A., Feng, L., Ferbel, T., Fiedler, F., Filthaut, F., Fisher, W., Fisk, H.E., Fortner, M., Fox, H., Franc, J., Fuess, S., Garbincius, P.H., Garcia-Bellido, A., Garcia-Gonzalez, J.A., Gavrilov, V., Geng, W., Gerber, C.E., Gershtein, Y., Ginther, G., Gogota, O., Golovanov, G., Grannis, P.D., Greder, S., Greenlee, H., Grenier, G., Gris, Ph., Grivaz, J.F., Grohsjean, A., Grunendahl, S., Grunewald, M.W., Guillemin, T., Gutierrez, G., Gutierrez, P., Haley, J., Han, L., Harder, K., Harel, A., Hauptman, J.M., Hays, J., Head, T., Hebbeker, T., Hedin, D., Hegab, H., Heinson, A.P., Heintz, U., Hensel, C., La Cruz, I.Heredia-De, Herner, K., Hesketh, G., Hildreth, M.D., Hirosky, R., Hoang, T., Hobbs, J.D., Hoeneisen, B., Hogan, J., Hohlfeld, M., Holzbauer, J.L., Howley, I., Hubacek, Z., Hynek, V., Iashvili, I., Ilchenko, Y., Illingworth, R., Ito, A.S., Jabeen, S., Jaffre, M., Jayasinghe, A., Jeong, M.S., Jesik, R., Jiang, P., Johns, K., Johnson, E., Johnson, M., Jonckheere, A., Jonsson, P., Joshi, J., Jung, A.W., Juste, A., Kajfasz, E., Karmanov, D., Katsanos, I., Kaur, M., Kehoe, R., Kermiche, S., Khalatyan, N., Khanov, A., Kharchilava, A., Kharzheev, Y.N., Kiselevich, I., Kohli, J.M., Kozelov, A.V., Kraus, J., Kumar, A., Kupco, A., Kurca, T., Kuzmin, V.A., Lammers, S., Lebrun, P., Lee, H.S., Lee, S.W., Lee, W.M., Lei, X., Lellouch, J., Li, D., Li, H., Li, L., Li, Q.Z., Lim, J.K., Lincoln, D., Linnemann, J., Lipaev, V.V., Lipton, R., Liu, H., Liu, Y., Lobodenko, A., Lokajicek, M., Lopes de Sa, R., Luna-Garcia, R., Lyon, A.L., Maciel, A.K.A., Madar, R., Magana-Villalba, R., Malik, S., Malyshev, V.L., Mansour, J., Martinez-Ortega, J., McCarthy, R., McGivern, C.L., Meijer, M.M., Melnitchouk, A., Menezes, D., Mercadante, P.G., Merkin, M., Meyer, A., Meyer, J., Miconi, F., Mondal, N.K., Mulhearn, M., Nagy, E., Narain, M., Nayyar, R., Neal, H.A., Negret, J.P., Neustroev, P., Nguyen, H.T., Nunnemann, T., Orduna, J., Osman, N., Pal, A., Parashar, N., Parihar, V., Park, S.K., Partridge, R., Parua, N., Patwa, A., Penning, B., Perfilov, M., Peters, Y., Petridis, K., Petrillo, G., Petroff, P., Pleier, M.A., Podstavkov, V.M., Popov, A.V., Prewitt, M., Price, D., Prokopenko, N., Qian, J., Quadt, A., Quinn, B., Ratoff, P.N., Razumov, I., Ripp-Baudot, I., Rizatdinova, F., Rominsky, M., Ross, A., Royon, C., Rubinov, P., Ruchti, R., Sajot, G., Sanchez-Hernandez, A., Sanders, M.P., Santos, A.S., Savage, G., Savitskyi, M., Sawyer, L., Scanlon, T., Schamberger, R.D., Scheglov, Y., Schellman, H., Schott, M., Schwanenberger, C., Schwienhorst, R., Sekaric, J., Severini, H., Shabalina, E., Shary, V., Shaw, S., Shchukin, A.A., Simak, V., Skubic, P., Slattery, P., Snow, G.R., Snow, J., Snyder, S., Soldner-Rembold, S., Sonnenschein, L., Soustruznik, K., Stark, J., Stefaniuk, N., Stoyanova, D.A., Strauss, M., Suter, L., Svoisky, P., Titov, M., Tokmenin, V.V., Tsai, Y.T., Tsybychev, D., Tuchming, B., Tully, C., Uvarov, L., Uvarov, S., Uzunyan, S., Van Kooten, R., W. van Leeuwen, M., Varelas, N., Varnes, E.W., Vasilyev, I.A., Verkheev, A.Y., Vertogradov, L.S., Verzocchi, M., Vesterinen, M., Vilanova, D., Vokac, P., Wahl, H.D., Wang, M.H.L.S., Warchol, J., Watts, G., Wayne, M., Weichert, J., Welty-Rieger, L., Williams, M.R.J., Wilson, G.W., Wobisch, M., Wood, D.R., Wyatt, T.R., Xie, Y., Yamada, R., Yang, S., Yasuda, T., Yatsunenko, Y.A., Ye, W., Ye, Z., Yin, H., Yip, K., Youn, S.W., Yu, J.M., Zennamo, J., Zhao, T.G., Zhou, B., Zhu, J., Zielinski, M., Zieminska, D., Zivkovic, L.
Lenguaje:eng
Publicado: 2016
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.117.022003
http://cds.cern.ch/record/2134236
Descripción
Sumario:We report the observation of a narrow structure, $X(5568)$, in the decay sequence $X(5568) \rightarrow B_s^0 \pi^{\pm}$, $B_s^0 \rightarrow J/\psi \phi$, $J/\psi\rightarrow \mu^+ \mu^-$, $\phi \rightarrow K^+K^-$. This is the first observation of a hadronic state with valence quarks of four different flavors. The mass and natural width of the new state are measured to be $m = 5567.8 \pm 2.9 {\rm \thinspace (stat)} ^{+0.9}_{-1.9} {\rm \thinspace (syst)}$ MeV/$c^2$ and $\Gamma = 21.9 \pm 6.4 {\rm \thinspace (stat)} ^{+5.0}_{-2.5} {\rm \thinspace (syst)} $ MeV/$c^2$, and the significance including look-elsewhere effect and systematic uncertainties is 5.1$\sigma$. The observation is based on$10.4~\rm{fb^{-1}}$ of $p \overline p $ collision data at $\sqrt{s}$ = 1.96 TeV collected by the D0 experiment at the Fermilab Tevatron collider.

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