4,152 research outputs found
and Production at Tevatron
We present results from CDF and D\O\ on and productions
in collisions at The goal of the analyses
is to test the non-abelian self-couplings of the , and photon, one of
the most direct consequences of the gauge symmetry. We
present direct measurements of couplings and limits on
and couplings, based on
and events, respectively, observed
during the 1992--1993 run of the Fermilab Tevatron Collider.Comment: 19pages, 6 figures appended in a uuencoded file. Invited talk given
at the International Symposium on Vector Boson Self-Interactions, UCLA,
February 1-3, 199
The impact of model building on the transmission dynamics under vaccination: Observable (symptom-based) versus unobservable (contagiousness-dependent) approaches
published_or_final_versio
Modeling the obesity epidemic: Social contagion and its implications for control
published_or_final_versio
Quark fragmentation functions in a diquark model for proton and hyperon production
A simple quark-diquark model for nucleon and structure is used to
calculate leading twist light-cone fragmentation functions for a quark to
inclusively decay into P or . The parameters of the model are
determined by fitting to the known deep-inelastic structure functions of the
nucleon. When evolved from the initial to the final scale, the calculated
fragmentation functions are in remarkable agreement (for ) with those
extracted from partially inclusive and experiments at high
energies. Predictions are made, using no additional parameters, for
longitudinally and transversely polarized quarks to fragment into p or
.Comment: 15 pages, latex, figures may be obtained by writing to
hafsa%png-qau%[email protected]
SiD Letter of Intent
Letter of Intent for SiD detector concept presented to ILC IDAGLetter of intent describing SiD (Silicon Detector) for consideration by the International Linear Collider IDAG panel. This detector concept is founded on the use of silicon detectors for vertexing, tracking, and electromagnetic calorimetry. The detector has been cost-optimized as a general-purpose detector for a 500 GeV electron-positron linear collider
p p -> j j e+/- mu+/- nu nu and j j e+/- mu-/+ nu nu at O(\alpha_{em}^6) and O(\alpha_{em}^4 \alpha_s^2) for the Study of the Quartic Electroweak Gauge Boson Vertex at LHC
We analyze the potential of the CERN Large Hadron Collider (LHC) to study the
structure of quartic vector-boson interactions through the pair production of
electroweak gauge bosons via weak boson fusion q q -> q q W W. In order to
study these couplings we have performed a partonic level calculation of all
processes p p -> j j e+/- mu+/- nu nu and pp -> j j e+/- mu-/+ nu nu at the LHC
using the exact matrix elements at O(\alpha_{em}^6) and O(\alpha_{em}^4
\alpha_s^2) as well as a full simulation of the t tbar plus 0 to 2 jets
backgrounds. A complete calculation of the scattering amplitudes is necessary
not only for a correct description of the process but also to preserve all
correlations between the final state particles which can be used to enhance the
signal. Our analyses indicate that the LHC can improve by more than one order
of magnitude the bounds arising at present from indirect measurements.Comment: 26 pages, 8 figures, revised version with some typos corrected, and
some comments and references adde
Quantitative Analysis of the Publishing Landscape in High-Energy Physics
World-wide collaboration in high-energy physics (HEP) is a tradition which
dates back several decades, with scientific publications mostly coauthored by
scientists from different countries. This coauthorship phenomenon makes it
difficult to identify precisely the ``share'' of each country in HEP scientific
production. One year's worth of HEP scientific articles published in
peer-reviewed journals is analysed and their authors are uniquely assigned to
countries. This method allows the first correct estimation on a ``pro rata''
basis of the share of HEP scientific publishing among several countries and
institutions. The results provide an interesting insight into the geographical
collaborative patterns of the HEP community. The HEP publishing landscape is
further analysed to provide information on the journals favoured by the HEP
community and on the geographical variation of their author bases. These
results provide quantitative input to the ongoing debate on the possible
transition of HEP publishing to an Open Access model.Comment: For a better on-screen viewing experience this paper can also be
obtained at:
http://doc.cern.ch/archive/electronic/cern/preprints/open/open-2006-065.pd
- …