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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

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