Accessing proton generalized parton distributions and pion distribution amplitudes with the exclusive pion-induced Drell-Yan process at J-PARC

被引：40

作者：

Sawada, Takahiro ^{[1
]}

Chang, Wen-Chen ^{[1
]}

Kumano, Shunzo ^{[2
,3
]}

Peng, Jen-Chieh ^{[4
]}

Sawada, Shinya ^{[5
]}

Tanaka, Kazuhiro ^{[3
,6
]}

机构：

[1] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[2] High Energy Accelerator Res Org KEK, KEK Theory Ctr, Inst Particle & Nucl Studies, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan

[3] KEK, Inst Particle & Nucl Studies, KEK Theory Ctr, J PARC Branch, 203-1 Shirakata, Tokai, Ibaraki 3191106, Japan

[4] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[5] High Energy Accelerator Res Org KEK, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan

[6] Juntendo Univ, Dept Phys, Chiba 2701695, Japan

来源：

PHYSICAL REVIEW D | 2016年 / 93卷 / 11期

基金：

美国国家科学基金会;

关键词：

VIRTUAL COMPTON-SCATTERING; MUON-PAIR PRODUCTION; QCD SUM-RULES; FORM-FACTORS; SPIN STRUCTURE; MESON ELECTROPRODUCTION; ASYMPTOTIC-BEHAVIOR; EVOLUTION-EQUATIONS; FACTORIZATION; NUCLEON;

D O I：

10.1103/PhysRevD.93.114034

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Generalized parton distributions (GPDs) encoding multidimensional information of hadron partonic structure appear as the building blocks in a factorized description of hard exclusive reactions. The nucleon GPDs have been accessed by deeply virtual Compton scattering and deeply virtual meson production with lepton beam. A complementary probe with hadron beam is the exclusive pion-induced Drell-Yan process. In this paper, we discuss recent theoretical advances on describing this process in terms of nucleon GPDs and pion distribution amplitudes. Furthermore, we address the feasibility of measuring the exclusive pion-induced Drell-Yan process pi(-)p -> mu(+)mu(-)n via a spectrometer at the High Momentum Beamline being constructed at J-PARC in Japan. Realization of such measurement at J-PARC will provide a new test of perturbative QCD descriptions of a novel class of hard exclusive reactions. It will also offer the possibility of experimentally accessing nucleon GPDs at large timelike virtuality.

引用

页数：17

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