output
19932026
most citedAstropy: A Community Python Package for Astronomy

14.6k citations

Showing 1999 · hep-phShow all

16 papers · 2 filters

hep-ph1999★ 15 cited

Collider Signatures of Sneutrino Cold Dark Matter

St. Kolb, M. Hirsch, H. V. Klapdor-Kleingrothaus +1

Decays of sneutrinos are considered in the case that in the presence of lepton-number violation in the sneutrino sector the lighter tau-sneutrino is the Lightest Supersymmetric Par…

hep-ph1999★ 8 cited

Discretized light-cone quantization and the effective interaction in hadrons

Hans-Christian Pauli

Light-cone quantization of gauge theories is discussed from two perspectives: as a calculational tool for representing hadrons as QCD bound-states of relativistic quarks and gluons…

hep-ph1999★ 2 cited

Exclusive meson production at COMPASS

Josef Pochodzalla, Lech Mankiewicz, Murray Moinester +3

We explore the feasibility to study exclusive meson production (EMP) in hard muon-proton scattering at the COMPASS experiment. These measurements constrain the off-forward parton d…

hep-ph1999★ 13 cited

Light Lepton Number Violating Sneutrinos and the Baryon Number of the Universe

H. V. Klapdor-Kleingrothaus, St. Kolb, V. A. Kuzmin

Recent results of neutrino oscillation experiments point to a nonvanishing neutrino mass. Neutrino mass models favour Majorana-type neutrinos. In such circumstances it is natural t…

hep-ph1999★ 59 cited

On the Convergence of the Expansion of Renormalization Group Flow Equation

G. Papp, B. -J. Schaefer, H. -J. Pirner +1

We compare and discuss the dependence of a polynomial truncation of the effective potential used to solve exact renormalization group flow equation for a model with fermionic inter…

hep-ph1999★ 69 cited

Neutrino mass and magnetic moment in supersymmetry without R-parity in the light of recent data

Gautam Bhattacharyya, H. V. Klapdor-Kleingrothaus, Heinrich Päs

We consider the generation of neutrino Majorana mass and transition magnetic moment by the lepton-number violating and/or couplings in R-parity-violating supersymmetric mo…

hep-ph1999★ 20 cited

J/Psi and Psi' total cross sections and formation times from data for charmonium suppression in collisions

Y. B. He, J. Huefner, B. Z. Kopeliovich

The recent data for E866 experiment on the x_F dependence for charmonium suppression in pA collisions at 800 GeV are analyzed using a time- and energy-dependent preformed charmoniu…

hep-ph1999★ 9 cited

Charmonium suppression by gluon bremsstrahlung in p-A and A-B collisions

J. Huefner, Y. B. He, B. Z. Kopeliovich

Prompt gluons are an additional source for charmonium suppression in nuclear collisions, in particular for nucleus-nucleus collisions. These gluons are radiated as bremsstrahlung i…

hep-ph1999★ 31 cited

SUSY spectrum constraints on direct dark matter detection

V. A. Bednyakov, H. V. Klapdor-Kleingrothaus

We perform an investigation of the MSSM parameter space at the Fermi scale taking into account available accelerator, non-accelerator and cosmological constraints. Extra assumption…

hep-ph1999★ 183 cited

Nonperturbative Effects in Gluon Radiation and Photoproduction of Quark Pairs

B. Z. Kopeliovich, A. Schaefer, A. V. Tarasov

We introduce a nonperturbative interaction for light-cone fluctuations containing quarks and gluons. The interaction squeezes the transverse size of these fluctuations in…

hep-ph1999★ 5 cited

CP violation in neutrino mixing matrix and leptogenesis

Yong Liu, Utpal Sarkar

The CP violation required in leptogenesis may have different origin, but in an effective theory they all are related to the rephasing invariant CP violating measure in the mixing m…

hep-ph1999★ 2 cited

Diffractive Interactions at DIS99: Experimental Summary

D. M. Jansen, M. Albrow, R. Brugnera

Experimental results on diffraction, which were presented at the 7th International Workshop on Deep Inelastic Scattering and QCD (DIS99), are summarized.

hep-ph1999★ 2 cited

On technically solving an effective QCD-Hamiltonian

S. Bielefeld, J. Ihmels, H. C. Pauli

By their very nature, field-theoretical Hamiltonians are derived in momentum representation. To solve the corresponding integro-differential equations is more difficult than to sol…

hep-ph1999★ 1.2k cited

Constituent Quarks and g_1

Steven D. Bass

We review the theory and present status of the proton spin problem with emphasis on the transition between current quarks and constituent quarks in QCD.

hep-ph1999★ 88 cited

The spin dependence of high energy proton scattering

N. H. Buttimore, B. Z. Kopeliovich, E. Leader +2

Motivated by the need for an absolute polarimeter to determine the beam polarization for the forthcoming RHIC spin program, we study the spin dependence of the proton-proton elasti…

hep-ph1999★ 11 cited

Gluon Virtuality and Heavy Sea Quark Contributions to the Spin-Dependent g_1 Structure Function

Steven Bass, Stanley J. Brodsky, Ivan Schmidt

We analyze the quark mass dependence of photon gluon fusion in polarized deep inelastic scattering for both the intrinsic and extrinsic gluon distributions of the nucleon. We calcu…