2024-03-29T01:41:50Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/2067372021-10-22T12:04:15Zcom_10261_61com_10261_4col_10261_314
http://hdl.handle.net/10261/206737
10.1140/epjc/s10052-019-7439-3
387291
Measurement of W±-boson and Z-boson production cross-sections in pp collisions at √s = 2.76 TeV with the ATLAS detector
Springer
2019
artículo
Álvarez Piqueras, D.
Aparisi Pozo, J.A.
Bailey, A.J.
Barranco, Laura
Cabrera, Susana
Castillo, F.L.
Castillo Mª Victoria
Cerda Alberich, L.
Costa, María José
Escobar, Carlos
rp13716
Estrada, Oscar
Ferrer, Antonio
Fiorini, L.
Fullana, Esteban
Fuster, Juan
García García, Carmen
García Navarro, José Enrique
González de la Hoz, Santiago
Gonzalvo Rodríguez, Galo Rafael
Higón, Emilio
Jimenez Pena, Javier
Lacasta Llácer, Carlos
rp14345
Lozano Bahilo, José J.
Madaffari, Daniele
Mamuzic, Judita
Martí García, Salvador
Melini, Davide
Miñano Moya, M.
Mitsou, Vasiliki A.
rp13468
Rodriguez Bosca, S.
Rodriguez Rodriguez, D.
Ruiz Martínez, Arantxa
Salt, José
Santra, A.
Sánchez Martínez, Javier
Soldevila, Urmila
Valero, Alberto
Valls Ferrer, Juan Antonio
Vos, Marcel
ATLAS Collaboration
2019-11
A measurement of W-+/- boson production in Pb+Pb collisions at root s(NN) = 5.02 TeV is reported using data recorded by the ATLAS experiment at the LHC in 2015, corresponding to a total integrated luminosity of 0.49 nb(-1). The W-+/- bosons are reconstructed in the electron or muon leptonic decay channels. Production yields of leptonically decaying W-+/- bosons, normalised by the total number of minimum-bias events and the nuclear thickness function, are measured within a fiducial region defined by the detector acceptance and the main kinematic requirements. These normalised yields are measured separately for W+ and W- bosons, and are presented as a function of the absolute value of pseudorapidity of the charged lepton and of the collision centrality. The lepton charge asymmetry is also measured as a function of the absolute value of lepton pseudorapidity. In addition, nuclear modification factors are calculated using the W-+/- boson production cross-sections measured in pp collisions. The results are compared with predictions based on next-to-leading-order calculations with CT14 parton distribution functions as well as with predictions obtained with the EPPS16 and nCTEQ15 nuclear parton distribution functions. No dependence of normalised production yields on centrality and a good agreement with predictions are observed for mid-central and central collisions. For peripheral collisions, the data agree with predictions within 1.7 (0.9) standard deviations for W- (W+) bosons.
Ministerio de Economía y Competitividad (España)
Ministerio de Ciencia, Innovación y Universidades (España)
European Physical Journal C 79
2019
935