Rapidity distributions in exclusive Z + jet and γ + jet events in pp collisions at √s=7 TeV

Rapidity distributions are presented for events containing either a Z boson or a photon with a single jet in proton-proton collisions produced at the CERN LHC. The data, collected with the CMS detector at √s=7 TeV, correspond to an integrated luminosity of 5.0 fb-1. The individual rapidity distribut...

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Detalles Bibliográficos
Autores: Chatrchyan, S., Brochero Cifuentes, J. A., Cabrillo, I. J., Calderon, Alicia, Chuang, S. H., Duarte Campderros, J., Fernández-García, Marcos, Gómez, Gervasio, González Sánchez, J., Graziano, A., Jorda, C., López Virto, A., Marco, Jesús, Marco, Rafael, Martínez-Rivero, Celso, Matorras, Francisco, Muñoz Sánchez, F. J., Rodrigo Anoro, Teresa, Rodríguez Marrero, Ana Y., Ruiz Jimeno, Alberto, Scodellaro, Luca, Vila, Iván, Vilar Cortabitarte, R., CMS Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/109692
Acceso en línea:http://hdl.handle.net/10261/109692
Access Level:acceso abierto
Palabra clave:ddc:530
Descripción
Sumario:Rapidity distributions are presented for events containing either a Z boson or a photon with a single jet in proton-proton collisions produced at the CERN LHC. The data, collected with the CMS detector at √s=7 TeV, correspond to an integrated luminosity of 5.0 fb-1. The individual rapidity distributions of the boson and the jet are consistent within 5% with expectations from perturbative QCD. However, QCD predictions for the sum and the difference in rapidities of the two final-state objects show discrepancies with CMS data. In particular, next-to-leading-order QCD calculations, and two common Monte Carlo event generators using different methods to match matrix-element partons with parton showers, appear inconsistent with the data as well as with each other. © 2013 CERN. Published by the American Physical Society.