274 research outputs found
Charged Higgs production with a top in MC@NLO
The production in association with a top quark is the most promising search
channel for charged Higgs bosons at the LHC. We review its theoretical
description including next-to-leading order corrections and the combination
with a parton shower. The latter allows us to for the first time answer
questions about the kinematics of all jets in the process. We then describe the
consistent subtraction of intermediate states and present new results about the
bottom mass uncertainty impacting the parton densisities.Comment: Proceedings `Prospects for Charged Higgs Discovery at Colliders',
including new results on bottom mass induced uncertainty, on-shell
subtraction, and reference cross section
Production of Supersymmetric Particles at High-Energy Colliders
The production and decay of supersymmetric particles is presented. The
dependence of the hadro-production cross section for weakly and strongly
interacting yields an improvement of derived mass bounds or the measurement of
the masses, respectively, of neutralinos/charginos and stops at the Tevatron
and at the LHC. Moreover, the NLO corrections increase the predicted
neutralino/chargino cross section by +20% to +40%, nearly independent of the
mass of the particles. The consistent treatment as well as the phenomenological
implications of scalar top mixing are presented. The correction to the stop
production cross sections, depending on the fraction of incoming quarks and
gluons, varies between -10% to +40% for an increasing fraction of incoming
gluons. The dependence of this cross section on all parameters, except for the
masses of the produced particles, is negligible.Comment: 86 pages, LaTeX, 69 figures included; Ph.D. Thesis postscript file
also available from http://www.desy.de/~pleh
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