Reaction πN → ωN in a dynamical coupled-channel approach

被引：8

作者：

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

Roenchen, Deborah ^{[1
,2
]}

Meissner, Ulf-G ^{[1
,2
,3
,4
,5
]}

Lu, Yu ^{[6
]}

Shen, Chao-Wei ^{[1
,2
]}

Wu, Jia-Jun ^{[6
]}

机构：

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

[2] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany

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

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

[5] Tbilisi State Univ, GE-0186 Tbilisi, Georgia

[6] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China

来源：

PHYSICAL REVIEW D | 2022年 / 106卷 / 09期

基金：

中国国家自然科学基金;

关键词：

STRANGE-PARTICLE PRODUCTION; CHIRAL PERTURBATION-THEORY; PI-N-SCATTERING; QCD SUM-RULES; DIFFERENTIAL CROSS-SECTIONS; CORRELATED 2-PION EXCHANGE; VECTOR-MESONS; NUCLEON SCATTERING; MEV-C; REACTION PI-P->ETA-N;

D O I：

10.1103/PhysRevD.106.094031

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A refined investigation on light flavor meson-baryon scatterings is performed using a dynamical coupled-channel approach, the Julich-Bonn model, that respects unitarity and analyticity constraints. The channel space of pi N, pi Delta, sigma N,rho N,eta N, K Lambda, and K Sigma is extended by adding the.N final state. The spectra of N* and Delta resonances are extracted in terms of complex poles of the scattering amplitudes, based on the result of a global fit to a worldwide collection of data, in the energy region from the pi N threshold to centerof-mass energy z = 2.3 GeV. A negative value of the omega N elastic spin-averaged scattering length is extracted, questioning the existence of bound states of the omega meson in the nuclear matter.

引用

页数：21

共 50 条

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