6,292 research outputs found
Next-to-leading order QCD corrections to photon production via weak-boson fusion
We present a calculation of next-to-leading order QCD corrections to gamma jj
production via weak-boson fusion at a hadron collider in the form of a flexible
parton-level Monte Carlo program which allows us to study cross sections and
distributions within experimentally relevant selection cuts. The radiative
corrections are found to be moderate with residual scale uncertainties being
considerably improved beyond tree level. The sensitivity of the reaction to
anomalous W+ W- gamma couplings is investigated.Comment: 14 pages, 8 figure
The Super Bigbite Project: a Study of Nucleon Form Factors
A proposed set of instrumentation, collectively referred to as the Super
Bigbite project, is presented. Used in three different configurations it will
allow measurements of three nucleon electromagnetic form factors GEn, GEp, and
GMn with unprecedented precision to Q2-values up to three times higher than
existing data
Parton-shower effects on Higgs boson production via vector-boson fusion in association with three jets
We present an implementation of Higgs boson production via vector-boson
fusion in association with three jets at hadron colliders in the POWHEG-BOX, a
framework for the matching of NLO-QCD calculations with parton-shower programs.
Our work provides the means to precisely describe the properties of extra jet
activity in vector-boson fusion reactions that are used for the suppression of
QCD backgrounds by central jet veto techniques. For a representative setup at
the CERN LHC we verify that uncertainties related to parton-shower effects are
mild for distributions related to the third jet, in contrast to what has been
observed in calculations based on vector-boson fusion induced Higgs production
in association with two jets.Comment: 12 pages, 8 figure
Next-to-leading order QCD corrections to W+Z and W-Z production via vector-boson fusion
We present the calculation of the next-to-leading order QCD corrections to
electroweak p p -> e+ nu_e mu+ mu- jj and p p -> e- nubar_e mu+ mu- jj
production at the CERN LHC in the form of a fully flexible parton-level Monte
Carlo program. The QCD corrections to the total cross sections are modest,
changing the leading-order results by less than 10%. At the Born level, the
shape of kinematic distributions can depend significantly on the choice of
factorization scale. This theoretical uncertainty is strongly reduced by the
inclusion of the next-to-leading order QCD corrections.Comment: 15 pages, 6 figures; new figure and comments added; version published
by PR
Physics Opportunities for Vector-Boson Scattering at a Future 100 TeV Hadron Collider
Vector-boson scattering (VBS) processes provide particularly promising means
for probing the mechanism of electroweak symmetry breaking and to search for
new physics in the weak sector. In the environment of a future proton-proton
collider operating at a center-of-mass energy of 100 TeV, unprecedented
opportunities arise for the investigation of this important class of reactions.
We highlight the prominent features of VBS processes in this energy regime and
discuss how the VBS signal can be isolated in the presence of a priori large
QCD backgrounds. We find excellent opportunities for the analysis of VBS
reactions in a kinematic range that is inaccessible to present colliders.Comment: 26 pages, 14 figures; matches version published by Phys. Rev.
- …