Operator product expansion in QCD in off-forward kinematics: separation of kinematic and dynamical contributions
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In this article, a general approach to the calculation of target mass and finite t = (p′ − p)2 corrections in hard processes which can be studied in the framework of the operator product expansion and involve momentum transfer from the initial to the final hadron state was developed.Abstract:
We develop a general approach to the calculation of target mass and finite t = (p′ − p)2 corrections in hard processes which can be studied in the framework of the operator product expansion and involve momentum transfer from the initial to the final hadron state. Such corrections, which are usually referred to as kinematic, can be defined as contributions of operators of all twists that can be reduced to total derivatives of the leading twist operators. As the principal result, we provide a set of projection operators that pick up the “kinematic” part of an arbitrary flavor-nonsinglet twist-four operator in QCD. A complete expression is derived for the time-ordered product of two electromagnetic currents that includes all kinematic corrections to twist-four accuracy. The results are immediately applicable to the studies of deeply-virtual Compton scattering, transition γ
* → Mγ form factors and related processes. As a byproduct of this study, we find a series of “genuine” twist-four flavor-nonsinglet quark-antiquark-gluon operators which have the same anomalous dimensions as the leading twist quark-antiquark operators.read more
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Electron-Ion Collider: The next QCD frontier: Understanding the glue that binds us all
Alberto Accardi,Alberto Accardi,Javier L. Albacete,M. Anselmino,Néstor Armesto,Elke Aschenauer,Alessandro Bacchetta,Daniël Boer,W. K. Brooks,T. P. Burton,N.-B. Chang,W.-T. Deng,W.-T. Deng,A. Deshpande,Markus Diehl,Adrian Dumitru,R. Dupré,R. Ent,Salvatore Fazio,Haiyan Gao,Vadim Guzey,H. Hakobyan,Yue Hao,D. Hasch,R. J. Holt,T. Horn,M. Huang,Andrew Hutton,C. E. Hyde,J. Jalilian-Marian,S. R. Klein,B. Kopeliovich,Yuri V. Kovchegov,K. S. Kumar,Krešimir Kumerički,M. A.C. Lamont,Tuomas Lappi,J. H. Lee,Y. Lee,Eugene Levin,Eugene Levin,F.-L. Lin,Vladimir Litvinenko,T. W. Ludlam,Cyrille Marquet,Zein-Eddine Meziani,Robert McKeown,Andreas Metz,Richard G. Milner,Vasiliy Morozov,Alfred H. Mueller,Berndt Müller,Berndt Müller,Dieter Müller,P. Nadel-Turonski,Hannu Paukkunen,A. Prokudin,V. Ptitsyn,Xin Qian,Jian-Wei Qiu,M. Ramsey-Musolf,T. Roser,F. Sabatié,Rodolfo Sassot,G. Schnell,Peter Schweitzer,E. P. Sichtermann,Marco Stratmann,Mark Strikman,M. Sullivan,S. Taneja,S. Taneja,T. Toll,D. Trbojevic,T. Ullrich,Raju Venugopalan,S. Vigdor,Werner Vogelsang,Christian Weiss,Bo-Wen Xiao,Feng Yuan,Y.-H. Zhang,Liang Zheng,Liang Zheng +83 more
TL;DR: In this article, the science case of an Electron-Ion Collider (EIC), focused on the structure and interactions of gluon-dominated matter, with the intent to articulate it to the broader nuclear science community, is presented.
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Electron Ion Collider: The Next QCD Frontier - Understanding the glue that binds us all
Alberto Accardi,Alberto Accardi,Javier L. Albacete,M. Anselmino,Néstor Armesto,Elke Aschenauer,Alessandro Bacchetta,Daniël Boer,W. K. Brooks,T. P. Burton,N.-B. Chang,W.-T. Deng,W.-T. Deng,A. Deshpande,Markus Diehl,Adrian Dumitru,R. Dupré,R. Ent,Salvatore Fazio,Haiyan Gao,Vadim Guzey,H. Hakobyan,Yue Hao,D. Hasch,R. J. Holt,T. Horn,M. Huang,Andrew Hutton,C. E. Hyde,J. Jalilian-Marian,S. R. Klein,B. Kopeliovich,Yuri V. Kovchegov,K. S. Kumar,Krešimir Kumerički,M. A.C. Lamont,Tuomas Lappi,J. H. Lee,Y. Lee,Eugene Levin,Eugene Levin,F.-L. Lin,Vladimir Litvinenko,T. W. Ludlam,Cyrille Marquet,Zein-Eddine Meziani,Robert McKeown,Andreas Metz,Richard G. Milner,Vasiliy Morozov,Alfred H. Mueller,Berndt Müller,Berndt Müller,Dieter Müller,P. Nadel-Turonski,Hannu Paukkunen,A. Prokudin,V. Ptitsyn,Xin Qian,Jian-Wei Qiu,M. Ramsey-Musolf,T. Roser,F. Sabatié,Rodolfo Sassot,G. Schnell,Peter Schweitzer,E. P. Sichtermann,Marco Stratmann,Mark Strikman,M. Sullivan,S. Taneja,S. Taneja,T. Toll,D. Trbojevic,T. Ullrich,Raju Venugopalan,S. Vigdor,Werner Vogelsang,Christian Weiss,Bo-Wen Xiao,Feng Yuan,Y.-H. Zhang,Liang Zheng,Liang Zheng +83 more
TL;DR: The science case of an Electron-Ion Collider (EIC), focused on the structure and interactions of gluon-dominated matter, with the intent to articulate it to the broader nuclear science community was presented in this article.
Journal Article
Electron Ion Collider: The next QCD frontier
TL;DR: The science case of an Electron-Ion Collider (EIC), focused on the structure and interactions of gluon-dominated matter, with the intent to articulate it to the broader nuclear science community, is presented in this paper.
Journal ArticleDOI
Pion distribution amplitude from Euclidean correlation functions: Exploring universality and higher-twist effects
Gunnar S. Bali,Gunnar S. Bali,Vladimir M. Braun,Benjamin Gläßle,Benjamin Gläßle,Meinulf Göckeler,Michael Gruber,Fabian Hutzler,Piotr Korcyl,Piotr Korcyl,Andreas Schäfer,Philipp Wein,Jian-Hui Zhang +12 more
TL;DR: Bali et al. as mentioned in this paper investigated the feasibility of calculating the pion distribution amplitude from suitably chosen Euclidean correlation functions at large momentum, and demonstrated the advantage of analyzing several correlation functions simultaneously.
Journal ArticleDOI
Power corrections and renormalons in parton quasidistributions
TL;DR: In this paper, the structure of power corrections to parton quasidistributions and pseudodistribution which appear in lattice calculations of parton distribution functions is studied.
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Alberto Accardi,Alberto Accardi,Javier L. Albacete,M. Anselmino,Néstor Armesto,Elke Aschenauer,Alessandro Bacchetta,Daniël Boer,W. K. Brooks,T. P. Burton,N.-B. Chang,W.-T. Deng,W.-T. Deng,A. Deshpande,Markus Diehl,Adrian Dumitru,R. Dupré,R. Ent,Salvatore Fazio,Haiyan Gao,Vadim Guzey,H. Hakobyan,Yue Hao,D. Hasch,R. J. Holt,T. Horn,M. Huang,Andrew Hutton,C. E. Hyde,J. Jalilian-Marian,S. R. Klein,B. Kopeliovich,Yuri V. Kovchegov,K. S. Kumar,Krešimir Kumerički,M. A.C. Lamont,Tuomas Lappi,J. H. Lee,Y. Lee,Eugene Levin,Eugene Levin,F.-L. Lin,Vladimir Litvinenko,T. W. Ludlam,Cyrille Marquet,Zein-Eddine Meziani,Robert McKeown,Andreas Metz,Richard G. Milner,Vasiliy Morozov,Alfred H. Mueller,Berndt Müller,Berndt Müller,Dieter Müller,P. Nadel-Turonski,Hannu Paukkunen,A. Prokudin,V. Ptitsyn,Xin Qian,Jian-Wei Qiu,M. Ramsey-Musolf,T. Roser,F. Sabatié,Rodolfo Sassot,G. Schnell,Peter Schweitzer,E. P. Sichtermann,Marco Stratmann,Mark Strikman,M. Sullivan,S. Taneja,S. Taneja,T. Toll,D. Trbojevic,T. Ullrich,Raju Venugopalan,S. Vigdor,Werner Vogelsang,Christian Weiss,Bo-Wen Xiao,Feng Yuan,Y.-H. Zhang,Liang Zheng,Liang Zheng +83 more