Global Data-Driven Determination of Baryon Transition Form Factors

被引：0

作者：

Wang, Yu-Fei ^{[1
,2
]}

Doring, Michael ^{[3
,4
,5
]}

Hergenrather, Jackson ^{[3
,4
]}

Mai, Maxim ^{[3
,4
,6
,7
]}

Mart, Terry ^{[8
]}

Meissner, Ulf-G. ^{[1
,6
,7
,9
]}

Roenchen, Deborah ^{[1
]}

Workman, Ronald ^{[3
,4
]}

机构：

[1] Forschungszentrum Julich, Inst Adv Simulat IAS 4, D-52425 Julich, Germany

[2] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 101408, Peoples R China

[3] George Washington Univ, Inst Nucl Studies, Washington, DC 20052 USA

[4] George Washington Univ, Dept Phys, Washington, DC 20052 USA

[5] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA

[6] Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany

[7] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany

[8] Univ Indonesia, Dept Fis, FMIPA, Depok 16424, Indonesia

[9] Tbilisi State Univ, Tbilisi 0186, Georgia

来源：

PHYSICAL REVIEW LETTERS | 2024年 / 133卷 / 10期

关键词：

NUCLEON; ELECTROPRODUCTION; PHOTOPRODUCTION; RESONANCES; MODEL; SIGNATURES; DYNAMICS; LAMBDA;

D O I：

10.1103/PhysRevLett.133.101901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Hadronic resonances emerge from strong interactions encoding the dynamics of quarks and gluons. The structure of these resonances can be probed by virtual photons parametrized in transition form factors. In this study, twelve N* and O transition form factors at the pole are extracted from data with the center-ofmass energy from pi N threshold to 1.8 GeV, and the photon virtuality 0 <= Q2/GeV2 <= 8. For the first time, these results are determined from a simultaneous analysis of more than one state, i.e., similar to 105 pi N, eta N, and KA electroproduction data. In addition, about 5 x 104 data in the hadronic sector as well as photoproduction serve as boundary conditions. For the O(1232) and N(1440) states our results are in qualitative agreement with previous studies, while the transition form factors at the poles of some higher excited states are estimated for the first time. Realistic uncertainties are determined by further exploring the parameter space.

引用

页数：6