ITP OpenIR  > SCI期刊论文
Cui, Z. L.; Hu, M. C.; Ma, J. P.
Gluon GPDs and exclusive photoproduction of quarkonium in forward region
Source PublicationEUROPEAN PHYSICAL JOURNAL C
Language英语
KeywordHADRON STRUCTURE SPIN DVCS NUCLEON
AbstractForward photoproduction of J/psi can be used to extract generalized parton distributions (GPDs) of gluons. We analyze the process at twist-3 level and study relevant classifications of twist-3 gluon GPDs. At leading power or twist-2 level the produced J/psi is transversely polarized. We find that at twist-3 the produced J/psi is longitudinally polarized. Our study shows that in the high-energy limit the twist-3 amplitude is only suppressed by the inverse power of the heavy quark mass relatively to the twist-2 amplitude. This indicates that the power correction to the cross-section of unpolarized J/psi can have a sizable effect. The poles in the hard factor convoluted with twist-3 gluon GPDs may concern the GPDs discontinuities, which will be briefly discussed in this work. We have also derived the amplitude of the production of h(c) at twist-3, but the result contains end-point singularities. The production of other quarkonia has been briefly discussed.
2019
ISSN1434-6044
Volume79Issue:10Pages:812
Cooperation Status国内
Subject AreaPhysics
MOST Discipline CataloguePhysics, Particles & Fields
DOI10.1140/epjc/s10052-019-7298-y
Indexed BySCIE
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/26994
CollectionSCI期刊论文
Affiliation1.[Cui, Z. L.
2.Hu, M. C.
3.Ma, J. P.] Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China
4.Ma, J. P.] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
5.[Ma, J. P.] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
6.[Ma, J. P.] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Cui, Z. L.,Hu, M. C.,Ma, J. P.. Gluon GPDs and exclusive photoproduction of quarkonium in forward region[J]. EUROPEAN PHYSICAL JOURNAL C,2019,79(10):812.
APA Cui, Z. L.,Hu, M. C.,&Ma, J. P..(2019).Gluon GPDs and exclusive photoproduction of quarkonium in forward region.EUROPEAN PHYSICAL JOURNAL C,79(10),812.
MLA Cui, Z. L.,et al."Gluon GPDs and exclusive photoproduction of quarkonium in forward region".EUROPEAN PHYSICAL JOURNAL C 79.10(2019):812.
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