(Institución)

Digital.CSIC > Ciencia y Tecnologías Físicas > Instituto de Física de Cantabria (IFCA) > (IFCA) Artículos >

Compartir

EndNote

Impacto

Registro de acceso abierto J/ψ and ψ (2S) production in pp collisions at √s = 7 TeV

Autor :Chatrchyan, S.
Brochero Cifuentes, J. A.
Cabrillo, I. J.
Calderón, A.
Chuang, S. H.
Duarte Campderros, J.
Felcini, M.
Fernández, M.
Gómez, G.
González Sánchez, J.
Jorda, C.
Lobelle Pardo, P.
López Virto, A.
Marco, Jesús
Marco, Rafael
Martínez-Rivero, Celso
Matorras, Francisco
Muñoz Sánchez, F. J.
Piedra, Jonatan
Rodrigo, Teresa
Rodriguez Marrero, Ana Y.
Ruiz Jimeno, Alberto
Scodellaro, Luca
Sobron Sañudo, M.
Vila, Iván
Vilar, Rocío
CMS collaboration
Fecha de publicación :2012
Editor:Elsevier España
Citación :Journal of High Energy Physics 2: 11 (2012)
Resumen:A measurement of the J/ ψ and ψ (2S) production cross sections in pp collisions at √s = 7TeV with the CMS experiment at the LHC is presented. The data sample corresponds to an integrated luminosity of 37 pb -1. Using a fit to the invariant mass and decay length distributions, production cross sections have been measured separately for prompt and non-prompt charmonium states, as a function of the meson transverse momentum in several rapidity ranges and integrated in the kinematical regions considered in this study. In addition, cross sections restricted to the acceptance of the CMS detector are given, which are not affected by the polarization of the charmonium states. The ratio of the differential production cross sections of the two states, where systematic uncertainties largely cancel, is also determined. The branching fraction of the inclusive B → ψ (2S)X decay is extracted from the ratio of the non-prompt cross sections to be: B(B → ψ (2S)X) = (3:08 ± 0:12 (stat.+syst.) ± 0:13 (theor.) ± 0:42 (BPDG)) × 10 -3: B(B → ψ(2S)X) = (3.08 ± 0.12 (stat.+syst.) ± 0.13 (theor.) ± 0.42 (B PDG)) × 10 -3.
URI :http://hdl.handle.net/10261/51957
Identificadores:doi: 10.1007/JHEP02(2012)011
e-issn: 1126-6708
Aparece en las colecciones: (IFCA) Artículos

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.