Relativistic Chiral Description of the 1S0 Nucleon-Nucleon Scattering

作     者：Xiu-Lei Ren Chun-Xuan Wang Kai-Wen Li Li-Sheng Geng Jie Meng 任修磊;王春宣;李凯文;耿立升;孟杰

作者机构：State Key Laboratory of Nuclear Physics and TechnologySchool of PhysicsPeking UniversityBeijing 100871China Institut fur Theoretische Physik ⅡRuhr-Universitat BochumD-44780 BochumGermany School of PhysicsBeihang UniversityBeijing 102206China Yukawa Institute for Theoretical PhysicsKyoto UniversityKyoto 606-8502Japan Beijing Key Laboratory of Advanced Nuclear Materials and PhysicsBeihang UniversityBeijing 100191China School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450001China 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2021年第38卷第6期

页      面：18-23页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 0704[理学-天文学] 

基　　金：Supported by the China Scholarship Council,the National Natural Science Foundation of China(Grant Nos.11375024,11522539,11735003,11335002,and 11775099) NSFC and DFG through funds provided to the Sino-German CRC 110“Symmetries and the Emergence of Structure in QCD”(NSFC Grant No.11621131001,DFG Grant No.TRR110) the China Postdoctoral Science Foundation(Grant Nos.2016M600845 and 2017T100008) the Major State 973 Program of China(Grant No.2013CB834400) the Fundamental Research Funds for the Central Universities 

主　　题：equation relativistic separable 

摘      要：Recently,a relativistic chiral nucleon-nucleon interaction was formulated up to leading order,which provides a good description of the phase shifts of J≤1 partial waves[***.C 42(2018)014103].Nevertheless,a separable regulator function that is not manifestly covariant was used in solving the relativistic scattering *** the present work,we first explore a covariant and separable form factor to regularize the kernel potential and then apply it to study the simplest but most challenging ^(1)S_(0) channel which features several lowenergy *** addition to being self-consistent,we show that the resulting relativistic potential can describe quite well the unique features of the ^(1)S_(0) channel at leading order,in particular the pole position of the virtual bound state and the zero amplitude at the scattering momentum ~340 MeV,indicating that the relativistic formulation may be more natural from the viewpoint of effective field theories.