2026-04-17T05:39:25Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/579512025-12-05T16:54:50Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917

00925njm 22002777a 4500 dc Abellan Beteta, Carlos author Calvo Gómez, Míriam author Camboni, Alessandro author Comerma Montells, Albert author Domingo Bonal, Francesc author Garrido Beltrán, Lluís author Gascón Fora, David author Grabalosa Gándara, Marc author Graciani Díaz, Ricardo author Graugés Pous, Eugeni author López Asamar, Elias author Musy, Marco author Pérez-Calero Yzquierdo, Antonio author Picatoste Olloqui, Eduardo author Pie Valls, B. (Blai) author Potterat, Cédric author Puig Navarro, Albert author Roselló, M. author Ruiz, Hugo (Ruiz Pérez) author Vázquez Gómez, Ricard author Vilasis-Cardona, Xavier author LHCb Collaboration author 2014-10-02T10:06:00Z 2014-10-02T10:06:00Z 2012-05 2014-10-02T10:06:00Z Using 34.7 pb−1 of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at s√=7~TeV is observed for the first time. Candidates are selected in the X(3872)→J/ψπ + π − decay mode, and used to measure where σ(pp→X(3872)+anything) is the inclusive production cross section of X(3872) mesons with rapidity in the range 2.5<br>4.5 and transverse momentum in the range 5<br>20 GeV/c. In addition the masses of both the X(3872) and ψ(2S) mesons, reconstructed in the J/ψπ + π − final state, are measured to be mX(3872)=3871.95±0.48 (stat)±0.12 (syst) MeV/c2 and mψ(2S)=3686.12±0.06 (stat)±0.10 (syst) MeV/c2. Física nuclear Hadrons Teoria quàntica de camps Astrofísica Energia nuclear Nuclear physics Hadrons Quantum field theory Astrophysics Nuclear energy Observation of X(3872) production in pp collisions at s√=7 TeV