Electromagnetic processes in a χEFT framework
Electromagnetic processes in a χEFT framework作者机构:Department of PhysicsUniversity of Pisa INFN-Pisa Department of PhysicsOld Dominion University Jefferson LabNewport News INFN-Pisa56127 PisaItaly
出 版 物:《Chinese Physics C》 (中国物理C(英文版))
年 卷 期:2010年第34卷第9期
页 面:1368-1371页
核心收录:
学科分类:0709[理学-地质学] 08[工学] 0708[理学-地球物理学] 0804[工学-仪器科学与技术] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 0703[理学-化学] 0704[理学-天文学] 0702[理学-物理学]
基 金:supported by the U.S.Department of Energy Office of Nuclear Physics under contracts DE-AC05-06OR23177
主 题:chiral effective field theory nuclear electromagnetic currents
摘 要:Recently,we have derived a two–nucleon potential and consistent nuclear electromagnetic currents in chiral effective field theory with pions and nucleons as explicit degrees of *** calculation of the currents has been carried out to include N 3 LO corrections,consisting of two–pion exchange and contact *** latter involve unknown low-energy constants (LECs),some of which have been fixed by fitting the np Sand P-wave phase shifts up to 100 MeV lab *** remaining LECs entering the current operator are determined so as to reproduce the experimental deuteron and trinucleon magnetic moments,as well as the np cross *** electromagnetic current operator is utilized to study the nd and n 3 He radiative captures at thermal neutron *** we discuss our results stressing on the important role played by the LECs in reproducing the experimental data.