European Organization for Nuclear Research

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 1995Show all

282 papers · 1 filter

hep-ph1995★ 20 cited

MSSM radiative contributions to the WW $γ$ and WWZ form factors

A. Arhrib, J. -L. Kneur, G. Moultaka

We evaluate one-loop contributions to the C and P conserving $W W γ, W W Z$ form factors in the Minimal Supersymmetric Standard Model (MSSM), and in a more constrained Supergravity Gra…

hep-ph1995★ 21 cited

Are IR Renormalons a Good Probe for the Strong Interaction Domain?

Yu. L. Dokshitzer, N. G. Uraltsev

We study the origin of non-analyticity in α_s of a short-distance QCD observable to demonstrate that the infrared renormalons, the same-sign factorial growth of the perturbative ex…

hep-th1995★ 128 cited

Spontaneous Breaking of N=2 to N=1 in Rigid and Local Supersymmetric Theories

S. Ferrara, L. Girardello, M. Porrati

We analyze the relation between rigid and local supersymmetric N=2 field theories, when half of the supersymmetries are spontaneously broken. In particular, we show that the recent…

hep-ph1995★ 310 cited

Predictions From A U(2) Flavour Symmetry In Supersymmetric Theories

Riccardo Barbieri, George Dvali, Lawrence Hall

In a generic supersymmetric extension of the Standard Model, whether unified or not, a simple and well motivated U(2) symmetry, acting on the lightest two generations, completely s…

hep-ph1995

Heavy Flavour Physics

Matthias Neubert

The current status of the theory and phenomenology of weak decays of hadrons containing a heavy quark is reviewed. Exclusive semileptonic and rare decays of $B$ mesons are discusse…

hep-th1995

Supersymmetric Sigma Models on Toric Varieties: A Test Case

Michele Bourdeau

In this letter we study supersymmetric sigma models on toric varieties. These manifolds are generalizations of CP^n manifolds. We examine here sigma models, viewed as gauged linear…

hep-th1995★ 1 cited

Summary of Results in N=1 Supersymmetric SU(2) Gauge Theories

S. Elitzur, A. Forge, A. Giveon +1

We summarize some results in 4d, N=1 supersymmetric SU(2) gauge theories: the exact effective superpotentials, the vacuum structure, and the exact effective Abelian couplings for a…

hep-th1995★ 36 cited

Poisson-Lie T-duality: Open Strings and D-branes

C. Klimcik, P. Severa

Global issues of the Poisson-Lie T-duality are addressed. It is shown that oriented open strings propagating on a group manifold $G$ are dual to $D$ -brane - anti- $D$ -brane pairs pr…

hep-ph1995★ 4 cited

Z' Reservation at LEP2

G. Montagna, O. Nicrosini, F. Piccinini +2

We consider the possibility that one extra $Z \equiv Z^{'}$ exists with arbitrary mass and fermion couplings that do not violate (charged) lepton universality. We show that, in such a…

hep-th1995★ 3 cited

Testing the Standard Model and Beyond

John Ellis

This paper is based on lectures presented to mathematical physicists and attempts to provide an overview of the present status of the Standard Model, its experimental tests, phenom…

hep-th1995★ 3 cited

Negative Screenings in Liouville Theory

Jens Schnittger

We demonstrate how negative powers of screenings arise as a nonperturbative effect within the operator approach to Liouville theory. This explains the origin of the corresponding p…

hep-ph1995★ 55 cited

Mass Degeneracy of the Higgsinos

Gian F. Giudice, Alex Pomarol

The search for charginos and neutralinos at LEP2 can become problematic if these particles are almost mass degenerate with the lightest neutralino. Unfortunately this is the case i…

hep-ph1995★ 13 cited

Nucleosynthesis Limits on the Mass of Long Lived Tau and Muon Neutrinos

Brian D. Fields, Kimmo Kainulainen, Keith A. Olive

We compute the nucleosynthesis bounds on the masses of stable Dirac and Majorana neutrinos by solving an evolution equation network comprising of all neutrino species which in the…

hep-ph1995★ 3 cited

Fourth-Generation Leptons at LEP2

Gautam Bhattacharyya, Debajyoti Choudhury

From non-observation at LEP1, a lower mass limit of 45 GeV has been established on any additional sequential fermion beyond the three generations. Precision measurements have furth…

hep-ph1995★ 18 cited

Supersymmetry and R_b in the light of LEP 1.5

J. Ellis, J. Lopez, D. Nanopoulos

We re-examine the possible magnitude of the supersymmetric contribution to $R_{b} \equiv Γ (Z^{0} \to b ˉ b) /Γ (Z^{0} \to all)$ in the light of the constraints imposed by the absence of…

hep-ph1995★ 16 cited

Searching $R$ -parity-violating supersymmetry in semileptonic $B$ -decays

Gautam Bhattacharyya, Amitava Raychaudhuri

If $R$ -parity is broken and the photino, although unstable, does not decay within the detector, then in new semileptonic $B$ -decay modes a light ( $\sim$ 2--3 GeV) photino can be pr…

hep-th1995★ 17 cited

Rusty Scatter Branes

R. R. Khuri, R. C. Myers

We derive double dimensional reduction/oxidation in a framework where it is applicable to describe general non-static (and anisotropic) $p$ -brane solutions. Given this procedure, w…

hep-th1995★ 229 cited

Poisson-Lie T-duality and Loop Groups of Drinfeld Doubles

C. Klimcik, P. Severa

A duality invariant first order action is constructed on the loop group of a Drinfeld double. It gives at the same time the description of both of the pair of $σ$ -models related by…

hep-th1995

Superstring Extension of the Standard Model and Gravitation

Costas Kounnas

Some of the four-dimensional Superstring solutions provide a consistent framework for a Supersymmetric Unification of all interactions including gravity. A class of them extends su…

hep-th1995★ 91 cited

Lagrangian Formulation of Symmetric Space sine-Gordon Models

I. Bakas, Q-Han Park, H. J. Shin

The symmetric space sine-Gordon models arise by conformal reduction of ordinary 2-dim $σ$ -models, and they are integrable exhibiting a black-hole type metric in target space. We pr…

hep-ph1995★ 7 cited

$R_{b}$ -- $R_{c}$ Crisis and New Physics

Gautam Bhattacharyya, Gustavo C. Branco, Wei-Shu Hou

The experimental values of $R_{b}$ and $R_{c}$ are the only data which do not seem to agree with Standard Model predictions. Although it is still premature to draw any definite conclus…

hep-lat1995★ 247 cited

Non-perturbative renormalization of lattice QCD at all scales

Karl Jansen, Chuan Liu, Martin Luescher +5

A general strategy to solve the non-perturbative renormalization problem in lattice QCD, using finite-size techniques and numerical simulations, is described. As an illustration we…

hep-th1995★ 80 cited

A Non--Supersymmetric Dyonic Extreme Reissner--Nordström Black Hole

Ramzi Khuri, Tomas Ortin

We present a dyonic embedding of the extreme Reissner-Nordström black hole in $N = 4$ and $N = 8$ supergravity that breaks all supersymmetries.

hep-th1995★ 44 cited

Supersymmetric Black Holes in $N = 8$ Supergravity