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CERN Document Server 7 záznamov nájdených  Hľadanie trvalo 0.66 sekúnd. 
1.
50 Years of Quantum Chromodynamics / Gross, Franz (Jefferson Lab ; William-Mary Coll.) ; Klempt, Eberhard (Bonn U., HISKP) ; Brodsky, Stanley J. (SLAC) ; Buras, Andrzej J. (TUM-IAS, Munich) ; Burkert, Volker D. (Jefferson Lab) ; Heinrich, Gudrun (KIT, Karlsruhe, TP) ; Jakobs, Karl (Freiburg U.) ; Meyer, Curtis A. (Carnegie Mellon U.) ; Orginos, Kostas (Jefferson Lab ; William-Mary Coll.) ; Strickland, Michael (Kent State U.) et al.
This paper presents a comprehensive review of both the theory and experimental successes of Quantum Chromodynamics, starting with its emergence as a well defined theory in 1972-73 and following developments and results up to the present day. Topics include a review of the earliest theoretical and experimental foundations; the fundamental constants of QCD; an introductory discussion of lattice QCD, the only known method for obtaining exact predictions from QCD; methods for approximating QCD, with special focus on effective field theories; QCD under extreme conditions; measurements and predictions of meson and baryon states; a special discussion of the structure of the nucleon; techniques for study of QCD at high energy, including treatment of jets and showers; measurements at colliders; weak decays and quark mixing; and a section on the future, which discusses new experimental facilities or upgrades currently funded. [...]
arXiv:2212.11107.- 2023-12 - 636 p. - Published in : Eur. Phys. J. C 83 (2023) 1125 Fulltext: 2212.11107 - PDF; Publication - PDF; External link: JLAB Document Server
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2.
Double parton distributions in the pion from lattice QCD / Bali, Gunnar S. (Regensburg U. ; TIFR, Mumbai, Dept. Theor. Phys.) ; Castagnini, Luca (Regensburg U.) ; Diehl, Markus (Hamburg U. ; DESY) ; Gaunt, Jonathan R. (CERN) ; Gläßle, Benjamin (Tubingen U.) ; Schäfer, Andreas (Regensburg U.) ; Zimmermann, Christian (Regensburg U.)
We perform a lattice study of double parton distributions in the pion, using the relationship between their Mellin moments and pion matrix elements of two local currents. A good statistical signal is obtained for almost all relevant Wick contractions. [...]
arXiv:2006.14826; DESY 20-098; DESY-20-098; CERN-TH-2020-086.- 2021-02-08 - 60 p. - Published in : JHEP 2102 (2021) 067 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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3.
Two-loop splitting in double parton distributions / Diehl, Markus (DESY) ; Gaunt, Jonathan R. (CERN) ; Plößl, Peter (Regensburg U.) ; Schäfer, Andreas (Regensburg U.)
Double parton distributions (DPDs) receive a short-distance contribution from a single parton splitting to yield the two observed partons. We investigate this mechanism at next-to-leading order (NLO) in perturbation theory. [...]
arXiv:1902.08019; DESY 19-024; DESY-19-024; CERN-TH-2019-013.- 2019-08-06 - 63 p. - Published in : SciPost Phys. 7 (2019) 017 Fulltext: PDF;
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4.
Two-current correlations in the pion on the lattice / Bali, Gunnar S. (Regensburg U. ; TIFR, Mumbai, Dept. Theor. Phys.) ; Bruns, Peter C. (Rez, Nucl. Phys. Inst.) ; Castagnini, Luca (Regensburg U.) ; Diehl, Markus (Hamburg U. ; DESY) ; Gaunt, Jonathan R. (CERN) ; Gläßle, Benjamin (Tubingen U.) ; Schäfer, Andreas (Regensburg U.) ; Sternbeck, André (Jena U.) ; Zimmermann, Christian (Regensburg U.)
We perform a systematic study of the correlation functions of two quark currents in a pion using lattice QCD. We obtain good signals for all but one of the relevant Wick contractions of quark fields. [...]
arXiv:1807.03073; DESY 18-105; CERN-TH-2018-147; DESY-18-105.- 2018-12-11 - 49 p. - Published in : JHEP 12 (2018) 061 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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5.
Threshold resummation for polarized high-$p_T$ hadron production at COMPASS / Uebler, Claudia (Regensburg U.) ; Schäfer, Andreas (Regensburg U.) ; Vogelsang, Werner (Tubingen U.)
We study the cross section for the photoproduction process g N ! hX where the incident photon and nucleon are longitudinally polarized and a hadron h is observed at high transverse momentum. Specifically, we address the “direct” part of the cross section, for which the photon interacts in a pointlike way [...]
SISSA, 2016 - 7 p. - Published in : PoS DIS2016 (2016) 227 Fulltext: PDF; External link: PoS server
In : 24th International Workshop on Deep Inelastic Scattering and related subjects, Hamburg, Germany, 11 - 15 Apr 2016, pp.227
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6.
Shear Viscosity from Lattice QCD / Mages, Simon W (Regensburg U. ; CERN ; Utrecht U.) ; Borsányi, Szabolcs (Wuppertal U.) ; Fodor, Zoltán (Wuppertal U. ; Eotvos U. ; Regensburg U.) ; Schäfer, Andreas (Regensburg U.) ; Szabó, Kálmán (Wuppertal U. ; Julich, Forschungszentrum ; Eotvos U.)
Understanding of the transport properties of the the quark-gluon plasma is becoming increasingly important to describe current measurements at heavy ion collisions. This work reports on recent efforts to determine the shear viscosity h in the deconfined phase from lattice QCD [...]
SISSA, 2015 - 7 p. - Published in : PoS LATTICE2014 (2015) 232 Fulltext: PDF; External link: Published version from PoS
In : 32nd International Symposium on Lattice Field Theory, Columbia U., New York, NY, USA, 23 - 28 Jun 2014, pp.232
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7.
Thermodynamics of SU(N) Yang-Mills theories in 2+1 dimensions II. The Deconfined phase / Caselle, Michele (Turin U. ; INFN, Turin) ; Castagnini, Luca (Regensburg U.) ; Feo, Alessandra (Parma U.) ; Gliozzi, Ferdinando (Turin U. ; INFN, Turin) ; Gursoy, Umut (CERN) ; Panero, Marco (Helsinki Inst. of Phys. ; Helsinki U.) ; Schafer, Andreas (Regensburg U.)
We present a non-perturbative study of the equation of state in the deconfined phase of Yang-Mills theories in D=2+1 dimensions. We introduce a holographic model, based on the improved holographic QCD model, from which we derive a non-trivial relation between the order of the deconfinement phase transition and the behavior of the trace of the energy-momentum tensor as a function of the temperature T. [...]
arXiv:1111.0580; DFTT-30-11; CERN-PH-TH-2011-266; HIP-2011-28-TH; DFTT-30-11; CERN-PH-TH-2011-266; HIP-2011-28-TH.- 2012 - 36 p. - Published in : JHEP 05 (2012) 135 Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint
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