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Measurement of the Bs0 Production Cross Section with Bs0→J/ψϕ Decays 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. ; Jorda, C. ; Lobelle Pardo, P. ; 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 ; Sobron Sañudo, M. ; Vila, Iván ; Vilar, Rocío
Issue DateSep-2011
PublisherAmerican Physical Society
CitationPhysical Review D 84(5): 052008 (2011)
AbstractThe Bs0 differential production cross section is measured as functions of the transverse momentum and rapidity in pp collisions at √s=7  TeV, using the Bs0→J/ψϕ decay, and compared with predictions based on perturbative QCD calculations at next-to-leading order. The data sample, collected by the CMS experiment at the LHC, corresponds to an integrated luminosity of 40  pb-1. The Bs0 is reconstructed from the decays J/ψ→μ+μ- and ϕ→K+K-. The integrated Bs0 cross section times Bs0→J/ψϕ branching fraction in the range 8<pTB<50  GeV/c and |yB|<2.4 is measured to be 6.9±0.6±0.6  nb, where the first uncertainty is statistical and the second is systematic.
Description16 páginas, 2 figuras, 1 tabla.-- PACS numbers: 13.85.Ni, 12.38.Bx, 14.40.Nd.-- Creative Commons Attribution 3.0 License.-- CMS Collaboration: et al.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.84.052008
Appears in Collections:(IFCA) Artículos
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