PLHC2011 - Physics at LHC 2011

Session

4E Parallel - EWK and QCD

9 Jun 2011, 14:30

Perugia Congress Center GIO

Description

4E Parallel - EWK and QCD

96. Jet production in association with vector bosons at ATLAS (15' + 5')

Maria Fiascaris (University of Chicago)

09/06/2011, 14:30

We present detailed measurements of W or Z plus jet production, including multiplicities, jet transverse momentum and other differential cross sections. The cross sections for W+b-jets and Z+b-jets are also presented. The measurements are compared to NLO QCD predictions.

97. W,Z + jets production with CMS detector (15' + 5')

William Robert Reece (CERN)

09/06/2011, 14:50

We present a study of jet production in association with W and Z bosons in pp collisions at a centre-of-mass energy of 7 TeV using 36 inverse-picobarns of data collected in the CMS experiment. The production of vector bosons with jets provides a stringent and important test of perturbative QCD calculations, and is an important background in searches for new physics and for studies of the top...

98. Role of gluons in soft and semi’hard hadron production in pp collisions at LHC (15' + 5')

Gennady Lykasov (Joint Inst. for Nuclear Research (JINR))

09/06/2011, 15:10

Hadron inclusive spectra in pp collisions are analyzed within the soft QCD (SQCD), the quark-gluon string model, and the perturbative QCD (PQCD). It is shown that the SQCD results in the satisfactory description of the experimental data on the inclusive spectra of light hadrons like pions and kaons at transverse momenta Pt not larger than 1-2 GeV/c. We discuss some difficulties to apply the...

99. QCD studies with photons in CMS (15' + 5')

Philippe Gras (CEA Saclay)

09/06/2011, 15:30

We present QCD measurements with photons using data from pp collisions at sqrt(s)= 7 TeV, recorded with the CMS detector at the CERN LHC. The differential cross section for the inclusive production of isolated prompt photons as a function of the photon transverse energy and the inclusive di-photon production rate as a function of the di-photon invariant mass are compared to...

100. Jet production measurement with the ATLAS detector (15' + 5')

Felix Mueller (University of Heidelberg)

09/06/2011, 15:50

Jet production is the hard QCD process with the widest kinematic reach and largest cross section at the LHC. Jets at large rapidity intervals, and jets which are not back-to-back, can also probe novel QCD evolution and radiation patterns. Comprehensive measurements of inclusive and dijet production are presented, as well as the production cross sections for jets containing beauty and...

101. Measurements of WW, Wγ and Zγ production cross sections at CMS (15' + 5')

Armando Lanaro (University of Wisconsin Madison)

09/06/2011, 16:10

We present production cross-section measurements of diboson final states, WW, Wγ and Zγ, based on 36 inverse-picobarns of proton proton collisions data at √s = 7 TeV recorded at the LHC by the CMS detector. The electron and muon decay channels of the W and Z are used. For the W mode, we consider ee, e-mu and mu-mu final states. For the Wγ and Zγ modes, we measure the cross sections for the...