Strange particle production in pp collisions at ps = 0.9 and 7 TeV

The spectra of strange hadrons are measured in proton-proton collisions, recorded by the CMS experiment at the CERN LHC, at centre-of-mass energies of 0.9 and 7 TeV. The \textK\textS0 K0S, Λ, and Ξ− particles and their antiparticles are reconstructed from their decay topologies and the production ra...

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Detalles Bibliográficos
Autores: Khachatryan, V., Brochero Cifuentes, J. A., Cabrillo, I. J., Calderon, Alicia, Chamizo Llatas, M., Chuang, S. H., Duarte Campderros, J., Felcini, Marta, Fernández-García, Marcos, Gómez, Gervasio, 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 Anoro, Teresa, Ruiz Jimeno, Alberto, Scodellaro, Luca, Sobron Sañudo, M., Vila, Iván, Vilar Cortabitarte, R., CMS Collaboration
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/52135
Acceso en línea:http://hdl.handle.net/10261/52135
Access Level:acceso abierto
Palabra clave:ddc:530
Descripción
Sumario:The spectra of strange hadrons are measured in proton-proton collisions, recorded by the CMS experiment at the CERN LHC, at centre-of-mass energies of 0.9 and 7 TeV. The \textK\textS0 K0S, Λ, and Ξ− particles and their antiparticles are reconstructed from their decay topologies and the production rates are measured as functions of rapidity and transverse momentum, p T. The results are compared to other experiments and to predictions of the Pythia Monte Carlo program. The p T distributions are found to differ substantially from the Pythia results and the production rates exceed the predictions by up to a factor of three.

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