Time-dependent angular analysis of the decay B-s(0) -> J/psi phi and extraction of Delta Gamma(s) and the CP-violating weak phase phi(s) by ATLAS
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Time-dependent angular analysis of the decay B-s(0) -> J/psi phi and extraction of Delta Gamma(s) and the CP-violating weak phase phi(s) by ATLAS

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Time-dependent angular analysis of the decay B-s(0) -> J/psi phi and extraction of Delta Gamma(s) and the CP-violating weak phase phi(s) by ATLAS

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dc.contributor.author ATLAS Collaboration
dc.contributor.author Cabrera Urbán, Susana
dc.contributor.author Castillo Giménez, María Victoria
dc.contributor.author Costa Mezquita, María José
dc.contributor.author Fassi, Farida
dc.contributor.author Ferrer Soria, Antonio
dc.contributor.author Fiorini, Luca
dc.contributor.author Fuster Verdú, Juan A.
dc.contributor.author García García, Carmen
dc.contributor.author García Navarro, José Enrique
dc.contributor.author González de la Hoz, Santiago
dc.contributor.author Hernández Jiménez, Yesenia
dc.contributor.author Higón Rodríguez, Emilio
dc.contributor.author Irles Quiles, Adrián
dc.contributor.author Kaci, Mohammed
dc.contributor.author Lacasta Llácer, Carlos
dc.contributor.author Lacuesta Miquel, Vicente
dc.contributor.author Martí García, Salvador
dc.contributor.author Miñano Moya, Mercedes
dc.contributor.author Mitsou, Vasiliki
dc.contributor.author Moles Valls, Regina
dc.contributor.author Moreno Llácer, María
dc.contributor.author Oliver García, Elena
dc.contributor.author Pedraza López, Sebastián
dc.contributor.author Pérez García-Estañ, María Teresa
dc.contributor.author Romero Adam, E.
dc.contributor.author Ros Martínez, Eduardo
dc.contributor.author Salt Cairols, José
dc.contributor.author Sánchez Martínez, Victoria
dc.contributor.author Solans Sánchez, Carlos Antonio
dc.contributor.author Soldevila, U.
dc.contributor.author Sánchez Martínez, Javier
dc.contributor.author Torró Pastor, Emma
dc.contributor.author Valero Biot, Alberto
dc.contributor.author Valladolid Gallego, E.
dc.contributor.author Valls Ferrer, Juan Antonio
dc.contributor.author Villaplana Pérez, Miguel
dc.contributor.author Vos, Marcel
dc.date.accessioned 2014-09-15T11:32:47Z
dc.date.available 2014-09-15T11:32:47Z
dc.date.issued 2012
dc.identifier.uri http://hdl.handle.net/10550/37902
dc.description.abstract A measurement of B-s(0) -> J/psi phi decay parameters, including the CP-violating weak phase phi(s) and the decay width difference Delta Gamma(s) is reported, using 4.9 fb(-1) of integrated luminosity collected in 2011 by the ATLAS detector from LHC pp collisions at a centre-of-mass energy root s = 7 TeV. The mean decay width Gamma(s) and the transversity amplitudes vertical bar A(0)(0)vertical bar(2) and vertical bar A(parallel to)(0)vertical bar(2) are also measured. The values reported for these parameters are: phi(s) = 0.22 +/- 0.41 (stat.) +/- 0.10 (syst.) rad Delta Gamma(s) = 0.053 +/- 0.021 (stat.) +/- 0.010 (syst.) ps(-1) Gamma(s) = 0.677 +/- 0.007 (stat.) +/- 0.004 (syst.) ps(-1) vertical bar A(0)(0)vertical bar(2) = 0.528 +/- 0.006 (stat.) +/- 0.009 (syst.) vertical bar A(parallel to)(0)vertical bar(2) = 0.220 +/- 0.008 (stat.) +/- 0.007 (syst.) where the values quoted for phi(s) and Delta Gamma(s) correspond to the solution compatible with the external measurements to which the strong phase delta(perpendicular to) is constrained and where is Delta Gamma(s) constrained to be positive. The fraction of S-wave KK or f(0) contamination through the decays B-s(0) -> J/psi K+K- (f(0)) is measured as well and is found to be consistent with zero. Results for phi(s) and Delta Gamma(s) are also presented as 68%, 90% and 95% likelihood contours, which show agreement with Standard Model expectations.
dc.language.iso eng
dc.relation.ispartof Journal of High Energy Physics, 2012, vol. 2012, num. 12, p. 072-1-072-34
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source ATLAS Collaboration Cabrera Urbán, Susana Castillo Giménez, María Victoria Costa Mezquita, María José Fassi, Farida Ferrer Soria, Antonio Fiorini, Luca Fuster Verdú, Juan A. García García, Carmen García Navarro, José Enrique González de la Hoz, Santiago Hernández Jiménez, Yesenia Higón Rodríguez, Emilio Irles Quiles, Adrián Kaci, Mohammed Lacasta Llácer, Carlos Lacuesta Miquel, Vicente Martí García, Salvador Miñano, M. Mitsou, Vasiliki Moles Valls, Regina Moreno Llácer, María Oliver García, Elena Pedraza López, Sebastián Pérez García-Estañ, María Teresa Romero Adam, E. Ros Martínez, Eduardo Salt Cairols, José Sánchez Martínez, V. Solans Sánchez, Carlos Antonio Soldevila, U. Sánchez, J. Torró Pastor, Emma Valero, A. Valladolid Gallego, E. Valls Ferrer, Juan Antonio Villaplana Pérez, Miguel Vos, Marcel 2012 Time-dependent angular analysis of the decay B-s(0) -> J/psi phi and extraction of Delta Gamma(s) and the CP-violating weak phase phi(s) by ATLAS Journal of High Energy Physics 2012 12 072-1 072-34
dc.subject Física nuclear
dc.title Time-dependent angular analysis of the decay B-s(0) -> J/psi phi and extraction of Delta Gamma(s) and the CP-violating weak phase phi(s) by ATLAS
dc.type info:eu-repo/semantics/article
dc.date.updated 2014-09-15T11:32:47Z
dc.identifier.idgrec 083588

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