hep-ph daily 9701201 -- 9701206 received (over 2605 served) 1626
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received from Wed 1 Jan 97 01:00:03 GMT to Fri 3 Jan 97 01:00:02 GMT
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Paper: hep-ph/9701201
From: Sergey Troshin <TRO...@vxcern.cern.ch>
Date: Thu, 2 Jan 1997 12:47:14 +0100 (CET)
Title: Universality of the preasymptotics in the hadron and photon diffraction
Authors: S. M. Troshin and N. E. Tyurin
Comments: 4 pages, latex, no figures
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We note that it is premature to make a conclusion on the multiplicity of the
Pomerons on the basis of the available experimental data since the interactions
have a preasymptotic nature
\\ (http://xxx.lanl.gov/abs/hep-ph/9701201 , 4kb)
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Paper: hep-ph/9701202
From: Antonio Riotto <rio...@fnas07.fnal.gov>
Date: Thu, 2 Jan 97 09:52:39 -0500
Title: What is found upon defrosting the Universe after inflation
Author: A. Riotto
Comments: Three pages, LaTeX. Talk given at the 18th Texas Symposium on
Relativisitc Astrophysics, December 15-20, Chicago, Illinois
\\
At the end of inflation the Universe is frozen in a near zero-entropy state
with energy density in a coherent scalar field and must be "defrosted" to
produce the observed entropy and baryon number. Baryon asymmetry may be
generated by the decay of supermassive Grand Unified Theory (GUT) bosons
produced non-thermally in a preheating phase after inflation, thus solving many
drawbacks facing GUT baryogenesis in the old reheating scenario.
\\ (http://xxx.lanl.gov/abs/hep-ph/9701202 , 4kb)
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Paper: hep-ph/9701203
From: ha...@t6-serv.lanl.gov (Salman Habib)
Date: Thu, 2 Jan 1997 11:20:39 -0700
Title: From Landau's Hydrodynamical Model to Field Theory Models of
Multiparticle Production: A Tribute to Peter Carruthers on his 61st Birthday
Author: Fred Cooper
Comments: 13 pages (14 figures), RevTeX (plus macro), uses epsf
Report-no: LA-UR-96-4514
\\
We review the assumptions and domain of applicability of Landau's
Hydrodynamical Model. By considering two models of particle production, pair
production from strong electric fields and particle production in the linear
sigma model, we demonstrate that many of Landau's ideas are verified in
explicit field theory calculations.
\\ (http://xxx.lanl.gov/abs/hep-ph/9701203 , 187kb)
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Paper: hep-ph/9701204
From: "T. S. Kosmas" <t.s.k...@uni-tuebingen.de>
Date: Thu, 2 Jan 1997 17:51:08 +0100
Title: Cold Dark Matter Detection via the LSP-Nucleus Elastic Scattering
Author: J.D. Vergados and T.S. Kosmas
Comments: 6 LATEX pages, 4 Tables, 1 PostScript figure, Proc. Dark Matter 96
conference, Sheffield UK, World Scientific, to appear
\\
The momentum transfer dependence of the LSP-nucleus elastic scattering cross
sections is studied. New imput SUSY parameters obtained in a phenomenologically
allowed parameter space are used to calculate the coherent rate for various
nuclear systems and the spin matrix elements for the proposed $^{207}Pb$
target. The results are compared to those obtained from other cold dark matter
detection targets.
\\ (http://xxx.lanl.gov/abs/hep-ph/9701204 , 18kb)
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Paper: hep-ph/9701205
From: "T. S. Kosmas" <t.s.k...@uni-tuebingen.de>
Date: Thu, 2 Jan 1997 18:02:14 +0100
Title: Cold Dark Matter in SUSY Theories. The Role of Nuclear Form Factors and
the Folding with the LSP Velocity
Author: T.S. Kosmas and J.D. Vergados
Comments: 23 LATEX pages, 4 Tables, 3 PostScript Figures included. Phys. Rev.
D, to be published
\\
The momentum transfer dependence of the total cross section for elastic
scattering of cold dark matter candidates, i.e. lightest supersymmetric
particle (LSP), with nuclei is examined. The presented calculations of the
event rates refer to a number of representative nuclear targets throughout the
periodic table and have been obtained in a relatively wide phenomenologically
allowed SUSY parameter space. For the coherent cross sections it is shown that,
since the momentum transfer can be quite big for large mass of the LSP and
heavy nuclei even though the energy transfer is small ($\le 100 KeV$), the
total cross section can in such instances be reduced by a factor of about five.
For the spin induced cross section of odd-A nuclear targets, as is the case of
$^{207}Pb$ studied in this work, we found that the reduction is less
pronounced, since the high multipoles tend to enhance the cross section as the
momentum transfer increases (for LSP $mass < 200 GeV$) and partially cancell
the momentum retardation. The effect of the Earth's revolution around the sun
on these event rates is also studied by folding with a Maxwellian LSP-velocity
distribution which is consistent with its density in the halos. We thus found
that the convoluted event rates do not appreciably change compared to those
obtained with an average velocity. The event rates increase with A and, in the
SUSY parameter space considered, they can reach values up to 140
$y^{-1}Kg^{-1}$ for Pb. The modulation effect, however, was found to be small
(less than $\pm 5%$).
\\ (http://xxx.lanl.gov/abs/hep-ph/9701205 , 38kb)
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Paper: hep-ph/9701206
From: "T. S. Kosmas" <t.s.k...@uni-tuebingen.de>
Date: Thu, 2 Jan 1997 19:17:10 +0100
Title: LSP-Nucleus Elastic Scattering Cross Sections
Author: J.D. Vergados and T.S. Kosmas
Comments: 6 LATEX pages, 5 Tables, Proc. Dark Matter 96 Conference, Heidelberg,
Germany, World Scientific, to appear
\\
We calculate LSP-nucleus elastic scattering cross sections using some
representative input in the restricted SUSY parameter space. The coherent
matrix elements are computed throughout the periodic table while the spin
matrix elements for the proposed $^{207}Pb$ target which has a rather simple
nuclear structure. The results are compared to those given from other cold dark
matter detection targets.
\\ (http://xxx.lanl.gov/abs/hep-ph/9701206 , 7kb)
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Paper: hep-ph/9610256
replaced with revised version Thu, 2 Jan 1997 02:15:52 +0200 (EET)
Title: Excited Heavy Mesons Decay Formfactors in Light Cone QCD
Authors: T. M. Aliev, A. Ozpineci and M. Savci (Middle East Technical
University-Ankara-Turkey)
Comments: 14 pages, 2 figures, LaTeX formatted. METU-PHYS-HEP-96-22
\\ (http://xxx.lanl.gov/abs/hep-ph/9610256 , 36kb)
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Paper: hep-ph/9611393
replaced with revised version Thu, 2 Jan 1997 02:33:31 +0200 (EET)
Title: B_q -> l^+ l^- gamma Decays in Light Cone QCD
Authors: T. M. Aliev, A. Ozpineci and M. Savci (Middle East Technical
University-Ankara-Turkey)
Comments: 16 pages, 3 figures, LaTeX formatted.METU-PHYS-HEP-96-22
METU-PHYS-HEP-96-30
\\ (http://xxx.lanl.gov/abs/hep-ph/9611393 , 23kb)
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Paper: hep-ph/9612480
replaced with revised version Thu, 2 Jan 1997 02:51:00 +0200 (EET)
Title: Rare B -> K^* l^+ l^- Decay in Light Cone QCD
Authors: T. M. Aliev, A. Ozpineci and M. Savci (Middle East Technical
University-Ankara-Turkey)
Comments: 19 pages, 5 figures, LaTeX formatted. METU-PHYS-HEP-96-35
\\ (http://xxx.lanl.gov/abs/hep-ph/9612480 , 48kb)
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Paper: hep-ph/9610259
replaced with revised version Thu, 2 Jan 1997 15:35:43 -0800 (PST)
Title: Long Range Physics in a Hot Non-Abelian Plasma
Authors: Patrick Huet and D.T. Son (University of Washington)
Comments: 14 pages, uses LaTeX; Typographical errors corrected and references
added
Report-no: UW/PT 96-20
\\ (http://xxx.lanl.gov/abs/hep-ph/9610259 , 14kb)
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