Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR1.6k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.4k papers
- Heidelberg UniversityDE1.3k papers
- Max Planck SocietyDE1.1k papers
- University of ZurichCH1.1k papers
- European Organization for Nuclear ResearchCH1k papers
- Laboratoire de Physique Nucléaire et de Hautes ÉnergiesFR990 papers
- Institute of Nuclear Physics, Polish Academy of SciencesPL973 papers
- University of Maryland, College ParkUS940 papers
- Rutherford Appleton LaboratoryGB939 papers
- Institute for Nuclear ResearchRU922 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT912 papers
59 papers · 1 filter
Low-mass e+e- pair production in 158 A GeV Pb-Au collisions at the CERN SPS, its dependence on multiplicity and transverse momentum
NA45 Collaboration, G. Agakichiev et al
We report a measurement of low-mass electron pairs observed in 158 GeV/nucleon Pb-Au collisions. The pair yield integrated over the range of invariant masses 0.2 < m < 2.0 GeV is e…
Search for New Physics with Neutrinoless Double Beta Decay
H. Päs
Neutrinoless double beta decay () is one of the most sensitive approaches to test particle physics beyond the standard model. During the last years, besides the most restrict…
A general parametrization for the long-range part of neutrinoless double beta decay
H. Päs, M. Hirsch, S. G. Kovalenko +1
Double beta decay has been proven to be a powerful tool to constrain violating physics beyond the standard model. We present a representation for the long-range part of the g…
J/ΨN and Psi' N total cross sections from photoproduction data: failure of vector dominance
Joerg Huefner, B. Z. Kopeliovich
Values for the cross sections and are of crucial importance, once one wants to understand nuclear suppression of () in a search for the qua…
Very High Energy Photons in Universe
F. A. Aharonian
I discuss the recent exciting results of discovery of TeV photons from several galactic and extragalactic sources, and highlight some objectives of VHE gamma ray astronomy that can…
Characteristics of the Multi-Telescope Coincidence Trigger of the HEGRA IACT System
N. Bulian, A. Daum, G. Hermann +12
The HEGRA--collaboration is operating a system of imaging atmospheric Cherenkov telescopes to search for sources of TeV-gamma-rays. Air showers are observed in stereoscopic mode wi…
Stereo Imaging of VHE Gamma-Ray Sources
F. A. Aharonian, A. K. Konopelko
We describe the features of the stereoscopic approach in the imaging atmospheric Cherenkov technique, and discuss the performance of future low threshold telescope arrays.
A polarised QCD condensate: nu p elastic scattering as a probe of U_A(1) dynamics
S. D. Bass
U_A(1) dynamics have the potential to induce a polarised condensate inside a nucleon. The formation of this condensate is related to the realisation of U_A(1) symmetry breaking by…
Statistical properties at the spectrum edge of the QCD Dirac operator
Jian-Zhong Ma, Thomas Guhr, Tilo Wettig
The statistical properties of the spectrum of the staggered Dirac operator in an SU(2) lattice gauge theory are analyzed both in the bulk of the spectrum and at the spectrum edge.…
Composite Fermions in Modulated Structures: Transport and Surface Acoustic Waves
Felix von Oppen, Ady Stern, Bertrand I. Halperin
Motivated by a recent experiment of Willett et al. [Phys. Rev. Lett. 78, 4478 (1997)], we employ semiclassical composite-fermion theory to study the effect of a periodic density mo…
The Spin and Flavour Dependence of High-Energy Photoabsorption
S. D. Bass, M. M. Brisudova
We review the present data on high-energy, spin-dependent photoabsorption. We find a strong isotriplet term in which persists from GeV to high $Q^2…
Photo-production of psi' Mesons at HERA
C. Adloff
Quasi-elastic (z >0.95) photo-production of psi' mesons has been observed at HERA for photon-proton centre-of-mass energies in the range 40 to 160 GeV. The psi' mesons were identif…
Particle Acceleration and Gamma-Ray Production in Shell Remnants
H. J. Volk
A number of nearby Northern Hemisphere shell-type Supernova Remnants (SNRs) has been observed in TeV gamma rays, but none of them could be detected so far. This failure calls for a…
In Situ Measurements of Interstellar Dust
M. Landgraf, E. Gruen
We present the mass distribution of interstellar grains measured in situ by the Galileo and Ulysses spaceprobes as cumulative flux. The derived in situ mass distribution per logari…
Modelling of the nonthermal flares in the galactic microquasar GRS 1915+105
A. M. Atoyan, F. A. Aharonian
We study the temporal and spectral evolution of the radio flares detected from the relativistic ejecta in the microquasar GRS 1915+105, and develop a model which suggests that thes…
The microscopic spectrum of the QCD Dirac operator with finite quark masses
T. Wilke, T. Guhr, T. Wettig
We compute the microscopic spectrum of the QCD Dirac operator in the presence of dynamical fermions in the framework of random-matrix theory for the chiral Gaussian unitary ensembl…
Measuring Gamma-Ray Energy Spectra with the HEGRA IACT System
W. Hofmann
The stereoscopic reconstruction of air showers viewed by multiple imaging atmospheric Cherenkov telescopes (IACTs) allows a more precise reconstruction of shower energies and hence…
GRS 1915+105: the flux ratio of twin radio clouds as a measure of asymmetry between counter jets
A. M. Atoyan, F. A. Aharonian
Resolution of both approaching and receding ejecta in the galactic microquasars makes possible to measure the flux ratio S_a/S_r of the twin ejecta, which contains an important inf…
Low Q^2 Jet Production at HERA and Virtual Photon Structure
C. Adloff
The transition between photoproduction and deep-inelastic scattering is investigated in jet production at the HERA ep collider, using data collected by the H1 experiment. Measureme…
Bifurcation, efficiency, and the role of injection in shock acceleration with the Bohm diffusion
M. A. Malkov
The efficiency and uniqueness of the diffusive shock acceleration is studied on the basis of the novel kinetic solutions. These solutions obtained earlier (paper I, astro-ph/970715…
The role of the quantum dispersion in the Coulomb correction of Bose-Einstein correlations
H. Merlitz, D. Pelte
The time dependent Schroedinger equation for two identical and charged pions is solved using wavepacket states. It is shown that the expected Coulomb distortion in the momentum cor…
Particle acceleration at shocks in relativistic jets
J. G. Kirk
The theory of particle acceleration at shock fronts is briefly reviewed, with special emphasis on the production of the particles responsible for the nonthermal emission from blaza…
An improved technique of image analysis for IACTs and IACT Systems
M. Ulrich, A. Daum, G. Hermann +1
In order to better utilize the information contained in the shower images generated by imaging Cherenkov telescopes (IACTs) equipped with cameras with small pixels, images are fit…
Random Matrix Theories in Quantum Physics: Common Concepts
Thomas Guhr, Axel Mueller-Groeling, Hans A. Weidenmueller
We review the development of random-matrix theory (RMT) during the last decade. We emphasize both the theoretical aspects, and the application of the theory to a number of fields.…