2,003 research outputs found
Bayesian Analysis
After making some general remarks, I consider two examples that illustrate
the use of Bayesian Probability Theory. The first is a simple one, the
physicist's favorite "toy," that provides a forum for a discussion of the key
conceptual issue of Bayesian analysis: the assignment of prior probabilities.
The other example illustrates the use of Bayesian ideas in the real world of
experimental physics.Comment: 14 pages, 5 figures, Workshop on Confidence Limits, CERN, 17-18
January, 200
Model Inference with Reference Priors
We describe the application of model inference based on reference priors to
two concrete examples in high energy physics: the determination of the CKM
matrix parameters rhobar and etabar and the determination of the parameters m_0
and m_1/2 in a simplified version of the CMSSM SUSY model. We show how a
1-dimensional reference posterior can be mapped to the n-dimensional (n-D)
parameter space of the given class of models, under a minimal set of conditions
on the n-D function. This reference-based function can be used as a prior for
the next iteration of inference, using Bayes' theorem recursively.Comment: Proceedings of PHYSTAT1
Strategy for discovering a low-mass Higgs boson at the Fermilab Tevatron
We have studied the potential of the CDF and DZero experiments to discover a
low-mass Standard Model Higgs boson, during Run II, via the processes
-> WH -> , -> ZH ->
and -> ZH ->. We
show that a multivariate analysis using neural networks, that exploits all the
information contained within a set of event variables, leads to a significant
reduction, with respect to {\em any} equivalent conventional analysis, in the
integrated luminosity required to find a Standard Model Higgs boson in the mass
range 90 GeV/c**2 < M_H < 130 GeV/c**2. The luminosity reduction is sufficient
to bring the discovery of the Higgs boson within reach of the Tevatron
experiments, given the anticipated integrated luminosities of Run II, whose
scope has recently been expanded.Comment: 26 pages, 8 figures, 7 tables, to appear in Physical Review D, Minor
fixes and revision
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