Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at root s=7 TeV with the ATLAS detector
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Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at root s=7 TeV with the ATLAS detector

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Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at root s=7 TeV with the ATLAS detector

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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 March Ruiz, Luis
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 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 2014-09-17T10:35:02Z
dc.date.available 2014-09-17T10:35:02Z
dc.date.issued 2013
dc.identifier.uri http://hdl.handle.net/10550/37933
dc.description.abstract A measurement of angular correlations in Drell-Yan lepton pairs via the phistar observable is presented. This variable probes the same physics as the Z/gamma* boson transverse momentum with a better experimental resolution. The Z/gamma*->e+e- and Z/gamma*->mu+mu- decays produced in proton--proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV are used. The data were collected with the ATLAS detector at the LHC and correspond to an integrated luminosity of 4.6 fb-1. Normalised differential cross sections as a function of phistar are measured separately for electron and muon decay channels. These channels are then combined for improved accuracy. The cross section is also measured double differentially as a function of phistar for three independent bins of the Z boson rapidity. The results are compared to QCD calculations and to predictions from different Monte Carlo event generators. The data are reasonably well described, in all measured Z boson rapidity regions, by resummed QCD predictions combined with fixed-order perturbative QCD calculations. Some of the Monte Carlo event generators are also able to describe the data. The measurement precision is typically better by one order of magnitude than present theoretical uncertainties.
dc.language.iso eng
dc.relation.ispartof Physics Letters B, 2013, vol. 720, num. 1-3, p. 32-51
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 March, L. Martí García, Salvador Miñano Moya, Mercedes 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. Soldevila, U. Sánchez, J. Torró Pastor, Emma Valero, A. Valladolid Gallego, E. Valls Ferrer, Juan Antonio Villaplana Pérez, Miguel Vos, Marcel 2013 Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at root s=7 TeV with the ATLAS detector Physics Letters B 720 1-3 32 51
dc.subject Física nuclear
dc.title Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at root s=7 TeV with the ATLAS detector
dc.type info:eu-repo/semantics/article
dc.date.updated 2014-09-17T10:35:02Z
dc.identifier.doi http://dx.doi.org/10.1016/j.physletb.2013.01.054
dc.identifier.idgrec 091400

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