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hep-th1996

The Paths of Unification In The GUST With The G x G Gauge Groups of E(8) x E(8)

A. Maslikov, I. Naumov, G. Volkov

In the framework of the four dimensional heterotic superstring with free fermions we discuss the rank eight and/or sixteen Grand Unified String Theories (GUST) which contain the SU…

hep-ph1996★ 21 cited

The Effective Lagrangian of the Two Higgs Doublet Model

P. Ciafaloni, D. Espriu

We consider the two Higgs doublet model extension of the Standard Model in the limit where all physical scalar particles are very heavy; too heavy, in fact, to be experimentally pr…

hep-ph1996★ 18 cited

Electroweak O(alpha) Corrections to W+W- Pair Production in Polarized gamma-gamma Collisions

G. Jikia

Full O(alpha) electroweak corrections for gamma-gamma-> W+W- are calculated including virtual corrections, soft and hard real photon and Z-boson emission. The corrections are quite…

hep-ex1996★ 14 cited

Search for Top Squark Pair Production in the Dielectron Channel

D0 Collaboration, S. Abachi

This report describes the first search for top squark pair production in the channel stop_1 stopbar_1 -> b bbar chargino_1 chargino_1 -> ee+jets+MEt using 74.9 +- 8.9 pb^-1 of data…

hep-th1996★ 21 cited

Influence of a magnetic fluxon on the vacuum energy of quantum fields confined by a bag

S. Leseduarte, August Romeo

We study the simultaneous influence of boundary conditions and external fields on quantum fluctuations by considering vacuum zero-point energies for quantum fields in the presence…

solv-int1996★ 2 cited

Riemannian Manifolds with Diagonal Metric. The Lamé and Bourlet Systems

A. V. Razumov, M. V. Saveliev

We discuss a Lie algebraic and differential geometry construction of solutions to some multidimensional nonlinear integrable systems describing diagonal metrics on Riemannian manif…

hep-ph1996★ 1 cited

Unified compositeness of leptons, quarks and Higgs bosons

Vasily V. Kabachenko, Yury F. Pirogov

The unified compositeness of leptons, quarks and Higgs bosons is proposed as a possible scenario for New Physics beyond the Standard Model. The following topics of the scenario are…

hep-th1996★ 4 cited

Nambu-Goldstone Fields, Anomalies and WZ Terms

J. Gomis, K. Kamimura, R. Kuriki

We construct the Wess-Zumino terms from anomalies in case of quasigroups for the following situations. One is effective gauge field theories of Nambu-Goldstone fields associated wi…

hep-ph1996★ 32 cited

New Astrophysical Constraints on the Mass of the Superlight Gravitino

J. A. Grifols, R. N. Mohapatra, A. Riotto

In some supergravity models, the superlight gravitino is accompanied by a light weakly coupled scalar (S) and pseudo-scalar (P) particle. The coupling of these particles to matter…

hep-ex1996★ 50 cited

Limits on Anomalous Couplings from Events at TeV

The DZero Collaboration, S. Abachi

We have measured the gauge boson coupling parameters using () events at TeV. The data, corresponding to an integrated luminosi…

hep-th1996★ 14 cited

Multi-soliton solutions of the two-dimensional matrix Davey-Stewartson equation

Andrei N. Leznov, Emil A. Yuzbashyan

We explicitly obtain the -soliton solutions of the (1+2)-dimensional matrix Davey-Stewartson equation from the known general solution of the matrix Toda chain with fixed ends. W…

hep-th1996★ 8 cited

Maximally nonabelian Toda systems

A. V. Razumov, M. V. Saveliev

A detailed consideration of the maximally nonabelian Toda systems based on the classical semisimple Lie groups is given. The explicit expressions for the general solution of the co…

hep-ph1996★ 6 cited

Phenomenological Parametrization of the Charged Particle Multiplicity Distributions in Restricted Rapidity Intervals in e+e- Annihilation into Hadrons and e+p Scattering at HERA

O. G. Tchikilev

It is shown that charged hadron multiplicity distributions in restricted (pseudo)rapidity intervals in e+e- annihilation and in e+p scattering at HERA are quite well described by t…

hep-ph1996★ 7 cited

Modified Negative Binomial Description of the Multiplicity Distributions in Lepton-nucleon Scattering

O. G. Tchikilev

It is shown that charged hadron multiplicity distributions in lepton-nucleon scattering are fairly well described by the modified negative binomial distribution in the energy range…

hep-th1996★ 5 cited

On the Difference between Admissible and "Differentiable" Hamiltonians

Vladimir O. Soloviev

It is shown that the Regge-Teitelboim criterion for fixing the unique boundary contribution to the Hamiltonian compatible with free boundary conditions should be modified if the Po…

hep-ph1996★ 9 cited

Extraction of parton distributions and from DIS data within the Bayesian treatment of systematic errors

Sergey Alekhin

We have performed the NLO QCD global fit of BCDMS, NMC, H1 and ZEUS data with full account of point-to-point correlations using the Bayesian approach to the treatment of systematic…

hep-ph1996★ 53 cited

Next-to-leading nonperturbative calculation in heavy quarkonium

A. Pineda

The next-to-leading nonperturbative contributions to heavy quarkonium systems are calculated. The applicability of the Voloshin-Leutwyler approach to heavy quarkonia systems for th…

hep-ph1996★ 98 cited

Naturalness bounds on gauge mediated soft terms

Paolo Ciafaloni, Alessandro Strumia

After a general discussion about the quantitative meaning of the naturalness upper bounds on the masses of supersymmetric particles, we compute these bounds in models with gauge-me…

astro-ph1996★ 10 cited

Leptonic Photons and Nucleosynthesis

J. A. Grifols, E. Masso

Should long-range forces be associated to electron, muon and/or tau quantum number then their ''fine structure constants" are seen to be bound by nucleosynthesis data to be…

hep-ph1996★ 16 cited

Astrophysical bounds on superlight gravitinos

J. A. Grifols, R. N. Mohapatra, A. Riotto

We derive the allowed mass range for the superlight gravitino present in a large class of supersymmetric models from the observed luminosity from Supernova 1987A. We find that for…

hep-ph1996★ 6 cited

Nonet Classification of Scalar/Isoscalar Resonances in the Mass Region below 1900 MeV: Observation of the Lightest Scalar Glueball

A. V. Anisovich, V. V. Anisovich, Yu. D. Prokoshkin +1

We summarize the results of the investigation of the wave which is devoted to the search for the lightest scalar glueball. In the framework of the K-matrix formal…

hep-ph1996★ 73 cited

Nonet Classification of Scalar/Isoscalar Resonances below 1900 MeV: the Existence of an Extra Scalar State in the Region 1200-1600 MeV

V. V. Anisovich, Yu. D. Prokoshkin, A. V. Sarantsev

A classification of the mesons is performed on the basis of the K-matrix analysis of meson spectra in the reactions: (i) GAMS data on , , $ηη…

hep-ph1996★ 1 cited

On the extreme behaviour of at

Sergey M. Troshin

On the basis of the U-matrix form of s-channel unitarization, we consider constraints unitarity provides for the spin structure function at . Corresponding con…

gr-qc1996★ 28 cited

In defence of the `Tunneling' wave function of the Universe

J. Garriga, A. Vilenkin

The tunneling approach to the wave function of the universe has been recently criticized by Bousso and Hawking who claim that it predicts a catastrophic instability of de Sitter sp…