INVESTIGADORES
MONTICELLI Fernando Gabriel
artículos
Título:
A measurement of the ratio of the W and Z cross sections with exactly one associated jet in pp collisions at √s = 7 TeV with ATLAS
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:
The ratio of production cross sections of the W and Z bosons with
exactly one associated jet is presented as a function of jet transverse
momentum threshold. The measurement has been designed to maximise
cancellation of experimental and theoretical uncertainties, and is
reported both within a particle-level kinematic range corresponding to
the detector acceptance and as a total cross-section ratio. Results are
obtained with the ATLAS detector at the LHC in pp collisions at a
centre-of-mass energy of 7 TeV using an integrated luminosity of 33
pb^-1. The results are compared with perturbative leading-order,
leading-log, and next-to-leading-order QCD predictions, and are found to
agree within experimental and theoretical uncertainties. The ratio is
measured for events with a single jet with p_T > 30 GeV to be 8.73
+/- 0.30 (stat) +/- 0.40 (syst) in the electron channel, and $ 8.49 +/-
0.23 (stat) +/- 0.33 (syst) in the muon channel.