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Title

Measurement of the X(3872) production cross section via decays to J/Ψπ+π- in pp collisions at √s=7 TeV

AuthorsChatrchyan, S.; Brochero Cifuentes, J. A. ; Cabrillo, I. J. ; Calderon, Alicia ; Chuang, S. H. ; Duarte Campderros, J. ; Felcini, Marta ; Fernández, M. ; Gómez, G. ; González Sánchez, J. ; Graziano, A. ; Jorda, C. ; López Virto, A. ; Marco, Jesús ; Marco, Rafael ; Martínez-Rivero, Celso ; Matorras, Francisco ; Muñoz Sánchez, F. J. ; Rodrigo, Teresa ; Rodríguez Marrero, Ana Y. ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Vila, Iván ; Vilar, Rocío ; CMS Collaboration
Issue Date2013
PublisherSpringer
CitationJournal of High Energy Physics 4: 154 (2013)
AbstractThe production of the X(3872) is studied in pp collisions at √s=7 TeV, using decays to J/Ψπ+π, where the J/Ψ decays to two muons. The data were recorded by the CMS experiment and correspond to an integrated luminosity of 4.8 fb-1. The measurements are performed in a kinematic range in which the X(3872) candidates have a transverse momentum 10 < pT < 50 GeV and rapidity lyl < 1:2. The ratio of the X(3872) and Ψ(2S) cross sections times their branching fractions into J/Ψπ+π- is measured as a function of pT. 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 pT is extracted. The π+π- mass spectrum of the J/Ψπ+π- system in the X(3872) decays is also investigated.
DescriptionOpen Access: This article is distributed under the terms of the Creative Commons Attribution License.-- et al.
Publisher version (URL)http://dx.doi.org/10.1007/JHEP04(2013)154
URIhttp://hdl.handle.net/10261/110026
DOI10.1007/JHEP04(2013)154
Identifiersdoi: 10.1007/JHEP04(2013)154
e-issn: 1029-8479
Appears in Collections:(IFCA) Artículos
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