New NLO Monte Carlo solutions firmly based on pQCD collinear factorization; W/Z production at LHC and DIS processes.
by
Stanislaw Jadach(Institute of Nuclear Physics, Cracow)
→
Europe/Berlin
313
313
Description
Methodology of including the QCD NLO corrections
in the quark-gluon Monte Carlo shower is outlined.
Main issues are:
(i) constructing once again the leading order (LO) parton
shower Monte Carlo from scratch, such that it is
based firmly on the collinear factorization theorems
(ii) introducing next-to-leading-order (NLO) corrections to
the hard process in this new environment.
(iii) introducing NLO corrections in the ladder part (kernels)
in the fully differential way.
The presented solution seems to be superior to the other known
techniques of adding the NLO corrections to the hard process
and is completely new for the ladder parts.
The issues of the difference between
the factorization scheme implemented in the Monte Carlo (MC)
solution and the standard $\overline{MS}$ scheme
and of the universality (process independence) is adressed.
The principal MC application the electroweak W/Z/H boson
production process at the LHC, but in order to address the issue
of universality the deep inelastic lepton--hadron process
is also brought into the MC framework.
