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114 papers · 1 filter
The puzzle of the non-planar structure of the QCD contributions to the Gottfried sum rule
A. L. Kataev
The recent finding, that in QCD at the -level only non-planar diagrams, which are suppressed by a factor relative to planar ones, are contributing to the valenc…
Real-Time Instantons and Suppression of Collision-Induced Tunneling
D. Levkov, S. Sibiryakov
We consider tunneling processes in QFT induced by collisions of elementary particles. We propose a semiclassical method for estimating the probability of these processes in the lim…
Tunnelling times: An elementary introduction
G. Privitera, G. Salesi, V. S. Olkhovsky +1
In this paper we examine critically and in detail some existing definitions for the tunnelling times, namely: the phase-time; the centroid-based times; the Buttiker and Landauer ti…
Application of PbWO4 crystal scintillators in experiment to search for double beta decay of 116Cd
F. A. Danevich, A. Sh. Georgadze, V. V. Kobychev +16
PbWO4 crystal scintillators are discussed as an active shield and light-guides in 116Cd double beta decay experiment with CdWO4 scintillators. Scintillation properties and radioact…
Two-Loop Static QCD Potential for General Colour State
B. A. Kniehl, A. A. Penin, Y. Schröder +2
In this letter, we extend the known results for the QCD potential between a static quark and its antiquark by computing the two-loop corrections to the colour-octet state.
Resonant and non-resonant Tunneling through a double barrier
Vladislav S. Olkhovsky, Erasmo Recami, A. K. Zaichenko
An explicit expression is obtained for the phase-time corresponding to tunneling of a (non-relativistic) particle through two rectangular barriers, both in the case of resonant and…