1,596 research outputs found
Higgs Decays to Muons in Weak Boson Fusion
We investigate the muonic decay of a light Higgs boson, produced in weak
boson fusion at future hadron colliders. We find that this decay mode would be
observable at the CERN LHC only with an unreasonably large amount of data,
while at a 200 TeV vLHC this process could be used to extract the muon Yukawa
coupling to about the 10% level, or better if significant improvements in
detector design can be achieved.Comment: 8 pages, Latex2e, Revtex, 8 figure
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
Next-to-leading order QCD corrections to Higgs production at a future lepton-proton collider
Crucial information on the coupling of the Higgs boson to bottom quarks is
expected from Higgs production in association with a forward tagging jet at a
future high-energy lepton-proton collider. In order to control the theoretical
uncertainties of the signal process, the impact of radiative corrections has to
be quantified. We present the full next-to-leading order QCD corrections to e-
p -> e- j H and e- p -> nu_e j H in the form of a flexible Monte-Carlo program
allowing for the calculation of cross sections and kinematic distributions
within experimentally feasible selection cuts. QCD corrections are found to be
very small for cross sections, while the shape distortion of distributions can
be as large as 20%. Residual scale uncertainties at next-to-leading order are
at the permille level.Comment: 15 pages, 14 figure
W+Jets at CDF: Evidence for Top Quarks
Recently, an anomaly of W+jets events at large invariant masses has been
reported by CDF. Many interpretations as physics beyond the Standard Model are
being offered. We show how such an invariant mass peak can arise from a slight
shift in the relative normalization of the top and WW backgrounds.Comment: 6pages, 6 figure
Innovation, Firm Size, and R&D Search
We present evidence that small firms perform two to four times more innovations per dollar of R&D than large firms. We propose a search theory of R&D that accounts for the evidence. A firm incurs R&D expenses until it has discovered a level of R&D productivity that is sufficiently great to warrant stopping the search. We show that because the large number of R&D projects run by a large firm becomes a substitute for enhanced R&D productivity, the average R&D productivity of a firm is decreasing in firm size.
SUSY parameter determination
The impact of the LHC, SLHC and the ILC on the precision of the determination
of supersymmetric parameters is investigated. In particular, in the point SPS1a
the measurements performed at the ILC will improve by an order of magnitude the
precision obtained by the LHC alone. The SLHC with respect to the LHC has the
potential to reduce the errors by a factor two.Comment: Invited talk at 2005 International Linear Collider Physics and
Detector Workshop and Second ILC Accelerator Workshop, Snowmass,
CO(Snowmass05) 3 pages, LaTe
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