IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Measurement of the WZ production cross section and limits on anomalous triple gauge couplings in proton-proton collisions at √s = 7 TeV with the ATLAS detector
Autor/es:
ATLAS COLLABORATION, G. AAD, F. MONTICELLI, ET AL
Revista:
PHYSICS LETTERS B
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2012 vol. 231 p. 1 - 23
ISSN:
0370-2693
Resumen:
This Letter presents a measurement of WZ production in 1.02 fb^-1 of pp
collision data at sqrt(s) = 7 TeV collected by the ATLAS experiment in
2011. Doubly leptonic decay events are selected with electrons, muons
and missing transverse momentum in the final state. In total 71
candidates are observed, with a background expectation of 12.1 +/-
1.4(stat.) +4.1/-2.0(syst) events. The total cross section for WZ
production for Z gamma^* masses within the range 66 GeV to 116 GeV is
determined to be sigma_WZ^tot = 20.5 +3.1/-2.8(stat.) +1.4/-1.3(syst.)
+0.9/-0.8(lumi.)pb, which is consistent with the Standard Model
expectation of 17.3 +1.3/-0.8 pb. Limits on anomalous triple gauge boson
couplings are extracted.