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1.
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The present and future of QCD
/ Achenbach, P. (Jefferson Lab) ; Adhikari, D. (Virginia Tech.) ; Afanasev, A. (George Washington U. ; Jefferson Lab) ; Afzal, F. (Bonn U., HISKP ; Bonn U.) ; Aidala, C.A. (Michigan U.) ; Al-bataineh, A. (Jordan U. Sci. Tech. ; Yarmouk U. ; Kansas U.) ; Almaalol, D.K. (Illinois U., Urbana ; Illinois U., Urbana (main)) ; Amaryan, M. (Old Dominion U. ; Old Dominion U. (main)) ; Androić, D. (Zagreb U.) ; Armstrong, W.R. (Argonne ; Argonne, PHY) et al.
This White Paper presents the community inputs and scientific conclusions from the Hot and Cold QCD Town Meeting that took place September 23-25, 2022 at MIT, as part of the Nuclear Science Advisory Committee (NSAC) 2023 Long Range Planning process. A total of 424 physicists registered for the meeting. [...]
arXiv:2303.02579; JLAB-PHY-23-3808.-
2024-04-15 - 111 p.
- Published in : Nucl. Phys. A 1047 (2024) 122874
Fulltext: 2303.02579 - PDF; Publication - PDF; External link: JLab Document Server
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2.
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Spin orbit correlations and the structure of the nucleon
/ Avakian, Harut (Jefferson Lab) ; Parsamyan, Bakur (CERN) ; Prokudin, Alexey (Penn State U., Berks-Lehigh Valley)
Extensive experimental measurements of spin and azimuthal asymmetries in various processes have stimulated theoretical interest and progress in the studies of the nucleon structure. The interpretation of experimental data in terms of parton distribution functions, generalized to describe transverse momentum and spatial parton distributions, is one of the main remaining challenges of modern nuclear physics. [...]
arXiv:1909.13664.-
2019-01-23 - 48 p.
- Published in : Nuovo Cimento, Riv. 42 (2019) 1-48
Fulltext: fulltext - PDF; 1909.13664 - PDF;
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3.
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Applications of the WW-type approximation to SIDIS
/ Bastami, S. (Connecticut U.) ; Avakian, H. (Jefferson Lab) ; Efremov, A.V. (Dubna, JINR) ; Musch, B.U. (Regensburg U.) ; Parsamyan, B. (CERN) ; Prokudin, A. (Penn State U., Berks-Lehigh Valley) ; Schlegel, M. (New Mexico State U.) ; Schnell, G. (Basque U., Bilbao ; IKERBASQUE, Bilbao) ; Schweitzer, P. (Connecticut U.) ; Tezgin, K. (Connecticut U.) et al.
We explore the complete cross-section for the production of unpolarized hadrons in semi-inclusive deep-inelastic scattering up to power-suppressed $\mathcal{O}(1/Q^2)$ terms in the Wandzura-Wilczek-type (WW-type) approximation, which consists in systematically assuming that $\bar{q}gq$-correlators are much smaller than $\bar{q}q$-correlators. Under the applicability of WW-type approximations, certain relations among transverse momentum dependent parton distribution functions (TMDs) and fragmentation functions (FFs) occur which are used to approximate SIDIS cross-section in terms of a smaller subset of TMDs and FFs. [...]
arXiv:1907.11165.-
SISSA, 2019-07-25 - 6 p.
- Published in : PoS DIS2019 (2019) 211
Fulltext: 1907.11165 - PDF; PoS(DIS2019)211 - PDF;
In : The XXVII International Workshop on Deep Inelastic Scattering and Related Subjects, Turin, Italy, 8 - 12 Apr 2019, pp.211
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4.
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Semi-Inclusive Deep Inelastic Scattering in Wandzura-Wilczek-type approximation
/ Bastami, S. (Connecticut U.) ; Avakian, H. (Jefferson Lab) ; Efremov, A.V. (Dubna, JINR) ; Kotzinian, A. (Yerevan Phys. Inst. ; INFN, Turin) ; Musch, B.U. (Regensburg U.) ; Parsamyan, B. (CERN) ; Prokudin, A. (Jefferson Lab ; Penn State U., Berks-Lehigh Valley) ; Schlegel, M. (New Mexico State U.) ; Schnell, G. (Basque U., Bilbao ; IKERBASQUE, Bilbao) ; Schweitzer, P. (Connecticut U. ; Tubingen U.) et al.
We present the complete cross-section for the production of unpolarized hadrons in semi-inclusive deep-inelastic scattering up to power-suppressed ${\cal O}(1/Q^2)$ terms in the Wandzura--Wilczek-type approximation which consists in systematically assuming that $\bar{q}gq$--terms are much smaller than $\bar{q}q$--correlators. We compute all twist-2 and twist-3 structure functions and the corresponding asymmetries, and discuss the applicability of the Wandzura--Wilczek-type approximations on the basis of available data. [...]
arXiv:1807.10606; JLAB-THY-18-2775.-
2019-06-04 - 71 p.
- Published in : EPJ Web Conf.: 204 (2019) , pp. 01013
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: JLab Document Server
In : 24th International Baldin Seminar on High Energy Physics Problems : Relativistic Nuclear Physics and Quantum Chromodynamics, Dubna, Russia, 17 - 22 Sep 2018, pp.01013
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5.
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180th International School of Physics "Enrico Fermi" : Three-dimensional Partonic Stucture of the Nucleon
28 Jun - 8 Jul 2011
- Varenna, Italy
/ Anselmino, M (ed.); Avakian, H (ed.); Hasch, D (ed.); Schweitzer, P (ed.)
The three-dimensional nucleon structure is central to many theoretical and experimental activities, and research in this field has seen many advances in the last two decades, addressing fundamental questions such as the orbital motion of quarks and gluons inside the nucleons, their spatial distribution, and the correlation between spin and intrinsic motion. A real three-dimensional imaging of the nucleon as a composite object, both in momentum and coordinate space, is slowly emerging. [...]
Amsterdam : IOS Press, 2012
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6.
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Gluons and the quark sea at high energies: distributions, polarization, tomography
/ Boer, Daniel (Groningen U.) ; Diehl, Markus (DESY) ; Milner, Richard (MIT) ; Venugopalan, Raju (Brookhaven) ; Vogelsang, Werner (Tubingen U.) ; Kaplan, David (Washington U., Seattle) ; Montgomery, Hugh (Jefferson Lab) ; Vigdor, Steven (Brookhaven) ; Accardi, A. (Jefferson Lab) ; Aschenauer, E.C. (Brookhaven) et al.
This report is based on a ten-week program on "Gluons and the quark sea at high-energies", which took place at the Institute for Nuclear Theory in Seattle in Fall 2010. [...]
arXiv:1108.1713 ; SLAC-R-995 ; INT-PUB-11-034 ; BNL-96164-2011 ; JLAB-THY-11-1373 ; INT-PUB-11-034 ; BNL-96164-2011 ; JLAB-THY-11-1373.
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2011 - 547.
JLab Document Server - SLAC Document Server - Full text
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8.
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9.
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Single target-spin asymmetries in semi-inclusive pion electroproduction on longitudinally polarized protons
/ Kotsinian, A.M. (CERN ; Dubna, JINR) ; Oganesian, K.A. (Frascati) ; Avakian, H.R. (Frascati) ; De Sanctis, E. (Frascati)
We evaluate the single target-spin sin(phi_h) and sin(2\phi_h) azimuthal asymmetries in the semi-inclusive deep inelastic lepton scattering off longitudinally polarized proton target under HERMES kinematic conditions. A good agreement with the HERMES data can be achieved using only the twist-2 distribution and fragmentation functions..
hep-ph/9908466.-
Geneva : CERN, 2000 - 6 p.
- Published in : Nucl. Phys. A 666-667 (2000) 290-295
Access to fulltext document: PDF; Fulltext: PDF;
In : Workshop on the Structure of the Nucleon (Nucleon 99), Frascati, Italy, 7 - 9 Jun 1999, pp.290-295
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10.
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