Exclusive tensor meson photoproduction

被引：12

作者：

Mathieu, V ^{[1
,2
]}

Pilloni, A. ^{[3
,4
,5
]}

Albaladejo, M. ^{[6
]}

Bibrzycki, L. ^{[6
,7
,8
]}

Celentano, A. ^{[5
]}

Fernandez-Ramirez, C. ^{[9
]}

Szczepaniak, A. P. ^{[6
,7
,10
]}

机构：

[1] Univ Complutense Madrid, Dept Fis Teor, Madrid 28040, Spain

[2] IPARCOS, Madrid 28040, Spain

[3] European Ctr Theoret Studies Nucl Phys & Related, I-38123 Villazzano, Trento, Italy

[4] Fdn Bruno Kessler, I-38123 Villazzano, Trento, Italy

[5] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy

[6] Thomas Jefferson Natl Accelerator Facil, Theory Ctr, Newport News, VA 23606 USA

[7] Indiana Univ, Phys Dept, Bloomington, IN 47405 USA

[8] Pedag Univ Cracow, Inst Comp Sci, PL-30084 Krakow, Poland

[9] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Ciudad De Mexico 04510, Mexico

[10] Indiana Univ, Ctr Explorat Energy & Matter, Bloomington, PA USA

来源：

PHYSICAL REVIEW D | 2020年 / 102卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.102.014003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study tensor meson photoproduction outside of the resonance region, at beam energies of a few GeVs. We build a model based on Regge theory that includes the leading vector and axial exchanges. We consider two determinations of the unknown helicity couplings and fit to the recent a(2) photoproduction data from CLAS. Both choices give a similar description of the a(2) cross section but result in different predictions for the parity asymmetries and the f(2) photoproduction cross section. We conclude that new measurements of f(2) photoproduction in the forward region are needed to pin down the correct production mechanism. We also extend our predictions to the 8.5 GeV beam energy, where current experiments are running.

引用

页数：13

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