2024-03-29T07:58:32Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1102372018-06-28T07:30:48Zcom_10261_37com_10261_4col_10261_290
Measurements of t t ̄ spin correlations and top-quark polarization using dilepton final states in pp collisions at √s =7TeV
Chatrchyan, S.
Brochero Cifuentes, J. A.
Cabrillo, I. J.
Cabrillo, I. J.
Calderon, Alicia
Chuang, S. H.
Duarte Campderros, J.
Fernández, M.
Gómez, G.
González Sánchez, J.
Graziano, A.
López Virto, A.
Marco, Jesús
Marco, Rafael
Martínez-Rivero, Celso
Matorras, Francisco
Muñoz Sánchez, F. J.
Piedra, Jonatan
Rodrigo, Teresa
Rodríguez Marrero, Ana Y.
Ruiz Jimeno, Alberto
Scodellaro, Luca
Vila, Iván
Vilar, Rocío
CMS Collaboration
This article is available under the terms of the Creative Commons Attribution 3.0 License.-- et al.
Spin correlations and polarization in the top quark–antiquark system are measured using dilepton final states produced in pp collisions at the LHC at s=7 TeV. The data correspond to an integrated luminosity of 5.0 fb−1 collected with the CMS detector. The measurements are performed using events with two oppositely charged leptons (electrons or muons), a significant imbalance in transverse momentum, and two or more jets, where at least one of the jets is identified as originating from a b quark. The spin correlations and polarization are measured through asymmetries in angular distributions of the two selected leptons, unfolded to the parton level. All measurements are found to be in agreement with predictions of the standard model-
2015-02-04T12:09:28Z
2015-02-04T12:09:28Z
2014
2015-02-04T12:09:28Z
artículo
Physical Review Letters 112: 182001 (2014)
http://hdl.handle.net/10261/110237
10.1103/PhysRevLett.112.182001
eng
Publisher's version
http://dx.doi.org/10.1103/PhysRevLett.112.182001
http://creativecommons.org/licenses/by/3.0/
openAccess
American Physical Society