INVESTIGADORES
MONTICELLI Fernando Gabriel
artículos
Título:
Study of jets produced in association with a W boson in pp collisions at √s = 7 TeV with the ATLAS detector
Autor/es:
ATLAS COLLABORATION, G. AAD, F. MONTICELLI, ET AL
Revista:
PHYSICAL REVIEW D
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2012 vol. 213 p. 1 - 23
ISSN:
1550-7998
Resumen:
We report a study of final states containing a W boson and hadronic
jets, produced in proton-proton collisions at a center-of-mass energy of
7 TeV. The data were collected with the ATLAS detector at the CERN LHC
and comprise the full 2010 data sample of 36 pb^-1. Cross sections are
determined using both the electron and muon decay modes of the W boson
and are presented as a function of inclusive jet multiplicity, N_jet,
for up to five jets. At each multiplicity, cross sections are presented
as a function of jet transverse momentum, the scalar sum of the
transverse momenta of the charged lepton, missing transverse momentum,
and all jets, the invariant mass spectra of jets, and the rapidity
distributions of various combinations of leptons and final-state jets.
The results, corrected for all detector effects and for all backgrounds
such as diboson and top quark pair production, are compared with
particle-level predictions from perturbative QCD. Leading-order
multiparton event generators, normalized to the NNLO total cross section
for inclusive W-boson production, describe the data reasonably well for
all measured inclusive jet multiplicities. Next-to-leading-order
calculations from MCFM, studied here for N_jet >= 2, and
BlackHat-Sherpa, studied here for N_jet >= 4, are found to be mostly
in good agreement with the data.