hep-ph daily 9612468 -- 9612471 received (over 2611 served) 1626
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received from Thu 26 Dec 96 01:00:01 GMT to Fri 27 Dec 96 01:00:02 GMT
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Paper: hep-ph/9612468
From: ma...@eken.phys.nagoya-u.ac.jp (Maru Nobuhito)
Date: Thu, 26 Dec 1996 15:52:11 +0900
Title: Effective Messenger Sector from Dynamical Supersymmetry Breaking
Authors: Naoyuki Haba, Nobuhito Maru and Takeo Matsuoka
Comments: 15pages, LaTeX, no figures
Report-no: DPNU-96-63
\\
In the framework of the dynamical supersymmetry breaking we construct the
messenger sector as the effective theory of supersymmetry breaking sector,
which is based on SU(3) \times SU(2) model of Affleck, Dine and Seiberg. In our
model, messenger superfields with non-renormalizable interaction are contained.
By minimizing the scalar potential, we show that the supersymmetry breaking can
be communicated to the visible sector without breaking QCD color. In this model
there appear various scales. Supersymmetry breaking scale turns out to be the
intermediate scale ( \sim 10^{10} GeV ) between the GUT scale and the soft
supersymmetry breaking scale.
\\ (http://xxx.lanl.gov/abs/hep-ph/9612468 , 8kb)
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Paper: hep-ph/9612469
From: "F. J. Yndurain" <f...@daniel.ft.uam.es>
Date: Thu, 26 Dec 1996 17:35:29 +0100
Title: High Energy Photon Deep Inelastic Scattering at Small and Large Q^2
with Soft Plus Hard Pomeron
Authors: K. Adel and F. J. Yndur\'ain
Comments: PlainTex file, 4 figures
Report-no: FTUAM 96-44
\\
We show how the sum of a hard singularity, $F_{2H}(x,Q^2_0)\sim
x^{-\lambda}$ and a soft Pomeron $F_{2P}(x,Q^2_0)\sim Const.$ for the
singlet piece of the structure function $F_{2S}=F_{2H}+F_{2P}$ for $Q_0^2\sim
a few GeV^2$, plus a saturating expression for the strong coupling,
$\tilde{\alpha}_s(Q^2)=4\pi/\beta_0 log[(Q^2+\Lambda^2)/\Lambda^2]$ give an
excellent description of experiment
i) For small Q^2, $0\lsim Q^2\leq 8.5 GeV^2$, and
ii) For large Q^2, $10\lsim Q^2\leq 1 500 GeV^2$ if evolved with QCD. The x
range is $6\times10^{-6}\lsim x \lsim 0.04$. The description for low Q^2
implies self-consistent values for the parameters in the exponents of x both
for singlet and nonsinglet. One has to have $\alpha_{\rho}(0)=0.48$ and
$\lambda=0.470 [\alpha_P(0)=1.470]$, in uncanny agreement with other
determinations of these parameters, and in particular the results of the
large Q^2 fits. The fit to data is so good that we may look for signals of a
``triple Pomeron" vertex, for which some evidence is found.
\\ (http://xxx.lanl.gov/abs/hep-ph/9612469 , 77kb)
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Paper: hep-ph/9612470
From: ERNEST MA (UC RIVERSIDE) <ERNE...@ucrac1.ucr.edu>
Date: Thu, 26 Dec 1996 11:23:20 -0800 (PST)
Title: Supersymmetric Scalar Masses, Z', and E(6)
Author: Ernest Ma (UC Riverside)
Comments: 10 pages, to appear in Proc. of the First American Symposium on High
Energy Physics, Merida, Mexico (Nov 1996)
Report-no: UCRHEP-T182 (Dec 1996)
\\
Assuming the existence of a supersymmetric U(1) gauge factor at the TeV
energy scale (motivated either by the superstring-inspired E_6 model or
low-energy electroweak phenomenology), several important consequences are
presented. The two-doublet Higgs structure at the 100 GeV energy scale is shown
to be different from that of the Minimal Supersymmetric Standard Model (MSSM).
A new neutral gauge boson Z' corresponding to the extra U(1) mixes with the Z.
The supersymmetric scalar quarks and leptons receive new contributions to their
masses from the spontaneous breaking of this extra U(1). The assumption of
universal soft supersymmetry breaking terms at the grand-unification energy
scale implies a connection between the U(1) breaking scale and the ratio of the
vacuum expectation values of the two electroweak Higgs doublets.
\\ (http://xxx.lanl.gov/abs/hep-ph/9612470 , 6kb)
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Paper: hep-ph/9612471
From: "Dharam V. Ahluwalia" <a...@p25hp.lanl.gov>
Date: Thu, 26 Dec 1996 15:22:12 -0600 (MDT)
Title: Notes on the Kinematic Structure of the Three-Flavor Neutrino
Oscillation Framework
Author: D. V. Ahluwalia (LANL)
Comments: 27 pages with 2 Figures (uses elsart style files)
Report-no: LA-UR-96-4865
\\
These notes present a critique of the standard three-flavor neutrino
oscillation framwork. The design proposal of the MINOS at Fermilab based on a
two mass eigenstate framework may require serious reconsideration if there is
strong mixing between all three flavors of neutrinos. For the LSND and KARMEN
neutrino oscillation experiments, the amplitude of neutrino oscillation of the
``one mass scale dominance''framework vanishes for certain values of mixing
angles as a result of opposite signs of two equal and opposite contributions.
Recent astronomical observations leave open the possibility that one of the
neutrino mass eigenstates may be non-relativistic in some instances. Neutrino
oscillation phenomenology with a superposition of two relativistic, and one
non-relativistic, mass eigenstates is constructed. It is concluded that if the
transition from the non-relativistic to the relativistic regime happens for
energies relevant to the Reactor and the LSND neutrino oscillation experiment
then one must consider an {\em ab intio} analysis of the existing data.
\\ (http://xxx.lanl.gov/abs/hep-ph/9612471 , 45kb)
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Paper (*cross-listing*): astro-ph/9612209
From: kam...@cuphyb.phys.columbia.edu (Marc Kamionkowski)
Date: Sat, 21 Dec 96 13:12:09 GMT
Title: The Electron-Screening Correction for the Proton-Proton Reaction
Authors: John N. Bahcall, Xuelei Chen, and Marc Kamionkowski
Comments: 9 pages, RevTeX
Report-no: CU-TP-806, CAL-623, IASSNS-AST-96/65
\\
We test the Salpeter formalism for calculating electron screening of nuclear
fusion reactions by solving numerically the relevant Schrodinger equation for
the fundamental proton-proton reaction. We evaluate exactly the square of the
overlap integral of the two-proton wave function and the deuteron wave function
and compare with the usual analytic approximation. The usual WKB solution
agrees with the numerical solution to $O(10^{-4})$.
\\ (http://xxx.lanl.gov/abs/astro-ph/9612209 , 12kb)
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Paper (*cross-listing*): nucl-th/9612061
From: Jifang Zhang <zha...@rpi.edu>
Date: Mon, 23 Dec 1996 10:39:18 -0500
Title: Theory of Eta Photo- and Electroproduction
Authors: Nimai C. Mukhopadhyay (1), J. -F. Zhang (1) and M. Benmerrouche (1 and
2) ((1) RPI, (2) SAL)
Comments: 9 pages, 3 figures
Report-no: RPI-96-N112
\\
We analyze the available data on eta photo- and electroproduction, around
W~1535 MeV, in the framework of the effective Lagrangian approach, and extract,
in a nearly model-independent fashion, the electrostrong amplitude for the
gamma+N--> N*(1535)--> N+eta processes. Quark model approaches are shown to be
quite inadequate to explain this property at all Q^2. In particular, at high
Q^2, the extracted amplitude falls much slower than the predictions of the
quark model, as a function of Q^2, a situation similar to the electroexcitation
and decay of Delta(1232). A QCD explanation of these observations is urgently
needed.
\\ (http://xxx.lanl.gov/abs/nucl-th/9612061 , 17kb)
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Paper: hep-ph/9607295
replaced with revised version Thu, 26 Dec 1996 11:30:33 -0500
Title: Combining exclusive semi-leptonic and hadronic B decays to measure
|V_ub|
Authors: Joao M. Soares
Comments: 6 pages, Latex, no figures; misprint in the results corrected, new
title and minor addition to the text
Report-no: UMHEP-431
\\ (http://xxx.lanl.gov/abs/hep-ph/9607295 , 5kb)
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Paper: hep-ph/9612450
replaced with revised version Thu, 26 Dec 1996 13:59:56 +0100
Title: Non-perturbative correlation masses in the hot electroweak phase
Authors: H.G. Dosch, J. Kripfganz, A. Laser, M.G. Schmidt
Comments: 25 pages, 5 figures; needs epsf.sty, a4.sty and cite.sty Some
sentences moved from section 5 to section 6
Report-no: HD-THEP-96-53, DO-TH 96/26
\\ (http://xxx.lanl.gov/abs/hep-ph/9612450 , 39kb)
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Paper: hep-ph/9612467
replaced with revised version Thu, 26 Dec 1996 03:05:27 +0000
Title: QCD Sum Rules and the Determination of Leading Twist Non-Singlet
Operator Matrix Elements
Authors: N. Chamoun (University of Oxford)
Comments: 9 pages, 5 figures
\\ (http://xxx.lanl.gov/abs/hep-ph/9612467 , 81kb)
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Paper (*cross-listing*): hep-th/9611059
replaced with revised version Thu, 26 Dec 1996 12:59:33 -0500
Title: Quantum effects on winding configurations in SU(2)-Higgs theory
Authors: Arthur Lue (MIT)
Comments: 12 pages, 2 eps figures, RevTeX, psfig.sty included. Substantial
content changes. Analysis improved to include higher-loop effects
Report-no: MIT-CTP-2585
\\ (http://xxx.lanl.gov/abs/hep-th/9611059 , 23kb)
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Report-no: EFI-96-40
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