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Measurement of J/? and ?(2S) Prompt Double-Differential Cross Sections in pp Collisions at vs = 7??TeV

Abstract: The double-differential cross sections of promptly produced J/? and ?(2S) mesons are measured in pp collisions at vs = 7??TeV, as a function of transverse momentum pT and absolute rapidity |y|. The analysis uses J/? and ?(2S) dimuon samples collected by the CMS experiment, corresponding to integrated luminosities of 4.55 and 4.90 fb-1, respectively. The results are based on a two-dimensional analysis of the dimuon invariant mass and decay length, and extend to pT = 120 and 100 GeV for the J/? and ?(2S), respectively, when integrated over the interval |y| < 1.2. The ratio of the ?(2S) to J/? cross sections is also reported for |y| < 1.2, over the range 10 < pT < 100??GeV. These are the highest pT values for which the cross sections and ratio have been measured.

Other publications of the same journal or congress with authors from the University of Cantabria

 Fuente: Phys. Rev. Lett. Vol. 114, Num. 19, Pag. 191802 (2015)

Publisher: American Physical Society

 Publication date: 01/05/2015

No. of pages: 16

Publication type: Artículo de Revista

 DOI: 10.1103/PhysRevLett.114.191802

ISSN: 0031-9007,1079-7114

 Spanish project: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01

Publication Url: https://doi.org/10.1103/PhysRevLett.114.191802

Authorship

KHACHATRYAN, VLADIMIR

JAVIER ANDRES BROCHERO CIFUENTES

MARCOS FERNANDEZ GARCIA

ALBERTO GRAZIANO

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

FRANCISCA JAVIELA MUÑOZ SANCHEZ

ANA YAIZA RODRIGUEZ MARRERO