6,577 research outputs found
Can Electro-Weak \h-Term be Observable ?
We rederive and discuss the result of the previous paper that in the standard
model -term related to -boson field can not be induced by weak
instantons. This follows from the existence of the fermion zero mode in the
instanton field even when Yukawa couplings are switched on and there are no
massless particles. We consider the new index theorem connecting the
topological charge of the weak gauge field with the number of fermion zero
modes of a certain differential operator which depends not only on gauge but
also on Higgs fields. The possible generalizations of the standard model are
discussed which lead to nonvanishing weak -term. In model the dependence of the vacuum energy is computed.Comment: 21 pages, Preprint TPI-MINN-93/24-
Germanification, cultural mission, holocaust: theatre in Łódź during World War II
No abstract available
Support Vector Machines in High Energy Physics
This lecture will introduce the Support Vector algorithms for classification
and regression. They are an application of the so called kernel trick, which
allows the extension of a certain class of linear algorithms to the non linear
case. The kernel trick will be introduced and in the context of structural risk
minimization, large margin algorithms for classification and regression will be
presented. Current applications in high energy physics will be discussed.Comment: 11 pages, 12 figures. Part of the proceedings of the Track
'Computational Intelligence for HEP Data Analysis' at iCSC 200
Measurement of Transverse Spin Effects at COMPASS
By measuring transverse single spin asymmetries one has access to the
transversity distribution function and the transverse momentum
dependent Sivers function . New measurements from
identified hadrons and hadron pairs, produced in deep inelastic scattering of a
transversely polarized target are presented. The data were taken in
2003 and 2004 by the COMPASS collaboration using the muon beam of the CERN SPS
at 160 GeV/c, resulting in small asymmetries.Comment: 4 pages, 7 figures, in proceedings for 'Rencontres de Moriond 2007,
QCD and Hadronic interactions
Review of Rebecca Rovit, The Jewish Kulturbund Theatre Company in Nazi Berlin. Iowa: University of Iowa Press, 2012.
No abstract available
Review of Jost Hermand, Culture in Dark Times: Nazi Fascism, Inner Emigration, and Exile. New York: Berghahn, 2013.
No abstract available
Basics of Feature Selection and Statistical Learning for High Energy Physics
This document introduces basics in data preparation, feature selection and
learning basics for high energy physics tasks. The emphasis is on feature
selection by principal component analysis, information gain and significance
measures for features. As examples for basic statistical learning algorithms,
the maximum a posteriori and maximum likelihood classifiers are shown.
Furthermore, a simple rule based classification as a means for automated cut
finding is introduced. Finally two toolboxes for the application of statistical
learning techniques are introduced.Comment: 12 pages, 8 figures. Part of the proceedings of the Track
'Computational Intelligence for HEP Data Analysis' at iCSC 200
Review of Karen Eliot, Albion's Dance: British Ballet During the Second World War
No abstract available
The production of a non-homogeneous classical pion field and the distribution of the neutral and charged pions
The probability distribution as a function of the ratio
of the neutral to total multiplicities is calculated for the
classical pion fields quickly varying in space and time.Comment: 6 pages, 1 .eps figure, using epsfig, submitted to Phys.Let
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