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20 papers · 1 filter
Production of the 1S0 diproton in the pp -> pp pi0 reaction at 0.8 GeV
S. Dymov, D. Gusev, M. Hartmann +20
The pp -> pp pi0 differential cross section has been measured with the ANKE spectrometer at COSY-Juelich for pion cms angles between 0 and 15.4 degrees at a proton beam energy of 0…
Particle escape into extra space
Michael Maziashvili
We focus on escape of a spin integer particle the challenge for which is of course that the corresponding field equation contains the second order time derivative and, in general,…
Laurent series expansion of a class of massive scalar one-loop integrals up to ${\cal O}(\ep^2)$ in terms of multiple polylogarithms
J. G. Körner, Z. Merebashvili, M. Rogal
In a recent paper we have presented results for a set of massive scalar one-loop master integrals needed in the NNLO parton model description of the hadroproduction of heavy flavor…
Determination of Deuteron Beam Polarizations at COSY
D. Chiladze, A. Kacharava, F. Rathmann +44
The vector and tensor polarizations of a deuteron beam have been measured using elastic deuteron-carbon scattering at 75.6 MeV and deuteron-proton scattering at 270 MeV. After acce…
One-loop amplitudes for four-point functions with two external massive quarks and two external massless partons up to O(epsilon^2)
J. G. Körner, Z. Merebashvili, M. Rogal
We present complete analytical results on the one-loop amplitudes relevant for the NNLO quark-parton model description of the hadroproduction of heavy quarks as…
Black hole remnants due to GUP or quantum gravity?
Michael Maziashvili
Based on the micro-black hole \emph{gedanken} experiment as well as on general considerations of quantum mechanics and gravity the generalized uncertainty principle (GUP) is analyz…