UP - logo
E-viri
Recenzirano
  • Measurement of the X(3872) production cross section via decays to J/ psi pi super(+) pi super(-) in pp collisions at ... TeV
    Chatrchyan, S; Khachatryan, V; Sirunyan, A M; Tumasyan, A; Adam, W; Aguilo, E; Bergauer, T; Dragicevic, M; Ero, J; Fabjan, C; Friedl, M; Fruehwirth, R; Ghete, V M; Hormann, N; Hrubec, J; Jeitler, M; Kiesenhofer, W; Knuenz, V; Krammer, M; Kraetschmer, I; Liko, D; Mikulec, I; Pernicka, M; Rabady, D; Rahbaran, B; Rohringer, C; Rohringer, H; Schofbeck, R; Strauss, J; Taurok, A; Waltenberger, W; Wulz, C-E; Mossolov, V; Shumeiko, N; Gonzalez, JSuarez; Bansal, M; Bansal, S; Cornelis, T; Wolf, E A; Janssen, X; Luyckx, S; Mucibello, L; Ochesanu, S; Roland, B; Rougny, R; Selvaggi, M; Haevermaet, H; Mechelen, P; Remortel, N; Spilbeeck, A; et. al

    The journal of high energy physics, 04/2013, Letnik: 2013, Številka: 4
    Journal Article

    (ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image).Figure not available: see fulltext. The production of the X(3872) is studied in pp collisions at ... TeV, using decays to J/ psi pi super(+) pi super(-), where the J/ psi decays to two muons. The data were recorded by the CMS experiment and correspond to an integrated luminosity of 4.8 fb super(-1). The measurements are performed in a kinematic range in which the X(3872) candidates have a transverse momentum 10<p sub(T) <50 GeV and rapidity |y|<1.2. The ratio of the X(3872) and psi (2S) cross sections times their branching fractions into J/ psi pi super(+) pi super(-) is measured as a function of p sub(T). In addition, the fraction of X(3872) originating from B decays is determined. From these measurements the prompt X(3872) differential cross section times branching fraction as a function of p sub(T) is extracted. The pi super(+) pi super(-) mass spectrum of the J/ psi pi super(+) pi super(-) system in the X(3872) decays is also investigated.

Vnos na polico