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143 papers · 1 filter

hep-ph2002★ 4 cited

Softening of SUSY flavor problem from asymptotically free bulk interactions

Kang-Sin Choi, Ki-Young Choi, Jihn E. Kim

Recently, it was pointed out that soft masses of the supersymmetric gauge theories with extra dimensions tends to a flavor conserving point, which is a desirable scenario in gravit…

hep-th2002★ 7 cited

D-branes in a marginally deformed WZW model

Stefan Forste

In this talk we discuss symmetry preserving D-branes on a line of a marginally deformed SU(2) WZW model. A semiclassical and a quantum theoretical approach are presented.

hep-ex2002★ 10 cited

Beam Test of Silicon Strip Sensors for the ZEUS Micro Vertex Detector

L. A. T. Bauerdick, E. Borsato, C. Burgard +23

For the HERA upgrade, the ZEUS experiment has designed and installed a high precision Micro Vertex Detector (MVD) using single sided micro-strip sensors with capacitive charge divi…

cs.DS2002

Solving a "Hard" Problem to Approximate an "Easy" One: Heuristics for Maximum Matchings and Maximum Traveling Salesman Problems

Sandor P. Fekete, Henk Meijer, Andre Rohe +1

We consider geometric instances of the Maximum Weighted Matching Problem (MWMP) and the Maximum Traveling Salesman Problem (MTSP) with up to 3,000,000 vertices. Making use of a geo…

hep-ex2002★ 10 cited

Observation of the strange sea in the proton via inclusive Phi-meson production in neutral current deep inelastic scattering at HERA

ZEUS Collaboration

Inclusive phi-meson production in neutral current deep inelastic e+p scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 45 pb^{-1}. The p…

hep-th2002★ 26 cited

Supersymmetric Yang-Mills theories with local coupling: The supersymmetric gauge

E. Kraus, C. Rupp, K. Sibold

Supersymmetric pure Yang-Mills theory is formulated with a local, i.e. space-time dependent, complex coupling in superspace. Super-Yang-Mills theories with local coupling have an a…

hep-ex2002★ 37 cited

Measurement of subjet multiplicities in neutral current deep inelastic scattering at HERA and determination of

ZEUS Collaboration

The subjet multiplicity has been measured in neutral current e+p interactions at Q**2 > 125 GeV**2 with the ZEUS detector at HERA using an integrated luminosity of 38.6 pb-1. Jets…

hep-th2002

S-Branes, Negative Tension Branes and Cosmology

F. Quevedo, G. Tasinato, I. Zavala

A general class of solutions of string background equations is studied and its physical interpretations are presented. These solutions correspond to generalizations of the standard…

astro-ph2002★ 16 cited

X-ray and weak lensing measurements of the mass profile of MS1008.1-1224: Chandra and VLT data

S. Ettori, M. Lombardi

We analyse the Chandra dataset of the galaxy cluster MS1008.1-1224 to recover an estimate of the gravitating mass as function of the radius and compare these results with the weak…

hep-ph2002★ 83 cited

Spin structure of the nucleon at low energies

Véronique Bernard, Thomas R. Hemmert, Ulf-G. Meißner

The spin structure of the nucleon is analyzed in the framework of a Lorentz-invariant formulation of baryon chiral perturbation theory. The structure functions of doubly virtual Co…

astro-ph2002★ 68 cited

Faint dwarf spheroidals in the Fornax Cluster: A flat luminosity function

Michael Hilker, Steffen Mieske, Leopoldo Infante

We have discovered about 70 very faint dwarf galaxies in the Fornax Cluster. These dSphs candidates follow the same magnitude-surface brightness relation as their counterparts in t…

astro-ph2002

Super Soft Sources

P. Kahabka

The class of Super Soft Sources has been established after discoveries performed with the Einstein and the ROSAT satellite. Only sources contributing to the class of super-soft X-r…

hep-th2002★ 7 cited

Deconstructing 5D supersymmetric U(1) gauge theories on orbifolds

Adam Falkowski, Hans-Peter Nilles, Marek Olechowski +1

We investigate deconstruction of five dimensional supersymmetric abelian gauge theories compactified on , with various sets of bulk and matter multiplets. The problem of a…

hep-th2002★ 113 cited

Spherically symmetric spacetimes in massive gravity

Thibault Damour, Ian I. Kogan, Antonios Papazoglou

We explore spherically symmetric stationary solutions, generated by ``stars'' with regular interiors, in purely massive gravity. We reexamine the claim that the resummation of non-…

hep-ph2002★ 16 cited

Do parity doublets in the baryon spectrum reflect restoration of chiral symmetry?

Eberhard Klempt

We discuss the mass spectrum of highly-excited nucleon and resonances. The spectrum exhibits parity doublets, pairs of resonances of identical total angular momentum J but of…

hep-ex2002★ 11 cited

A Measurement of the tau -> mu nu nu Branching Ratio

The OPAL collaboration, G. Abbiendi

The tau -> mu nu nu branching ratio has been measured using data collected from 1990 to 1995 by the OPAL detector at the LEP collider. The resulting value of B(tau -> mu nu nu) = 0…

astro-ph2002★ 14 cited

Interstellar H_2 in M 33 detected with FUSE

Hartmut Bluhm, Klaas S. de Boer, Ole Marggraf +2

FUSE spectra of the four brightest H II regions in M 33 show absorption by interstellar gas in the Galaxy and in M 33. On three lines of sight molecular hydrogen in M 33 is detecte…

astro-ph2002★ 17 cited

12CO(J=2->1) and CO(J=3->2) observations of Virgo Cluster spiral galaxies with the KOSMA telescope: global properties

H. Hafok, J. Stutzki

We present 12CO(J=2->1) and CO(J=3->2) observations of quiescent Virgo Cluster spiral galaxies with the KOSMA 3m submm telescope. The beam sizes of 80" at 345 GHz and 120" at 230 G…

hep-ph2002★ 8 cited

Status of a Supersymmetric Flavour Violating Solution to the Solar Neutrino Puzzle with Three Generations

H. K. Dreiner, G. Moreau

We present a general study of a three neutrino flavour transition model based on the supersymmetric interactions which violate R-parity. These interactions induce flavour violating…

hep-ph2002★ 1 cited

An Introduction to the Evaluation of Spin Structure Functions from Experimental Data

R. Windmolders

These lectures introduce the non-specialist to the evaluation of spin structure functions from asymmetries measured in polarized deep-inelastic scattering experiments. The various…

cond-mat.str-el2002★ 30 cited

Rung-singlet phase of the S=1/2 two-leg spin-ladder with four-spin cyclic exchange

K. P. Schmidt, H. Monien, G. S. Uhrig

Using continuous unitary transformations (CUT) we calculate the one-triplet gap for the antiferromagnetic S=1/2 two-leg spin ladder with additional four-spin exchange interactions…

astro-ph2002

The 3-D composition of the Galactic interstellar medium. The hot phases and X-ray absorbing material

J. Pradas, J. Kerp

We present maps of the Galactic X-ray Halo and constrain the location of X-ray absorbing gas using the X-ray radiation transfer as distance a indicator. Based on a consistent model…

astro-ph2002★ 1 cited

The soft X-ray background towards the northern sky. A detailed analysis of the Milky Way halo

J. Pradas, J. Kerp, P. M. W. Kalberla

We present a correlation analysis of the diffuse X-ray background emission of the ROSAT all-sky survey with the Leiden/Dwingeloo 21-cm HI line survey. We derive a consistent model…

quant-ph2002★ 80 cited

Single atoms in a standing-wave dipole trap

Wolfgang Alt, Dominik Schrader, Stefan Kuhr +3

We trap a single cesium atom in a standing-wave optical dipole trap. Special experimental procedures, designed to work with single atoms, are used to measure the oscillation freque…