Isospin symmetry of fragmentation functions

• DOI: 10.1016/j.physletb.2021.136217
• Publication Date: 2021-03-19T04:51:00Z
• Authors: Kai-bao Chen; Zuo-tang Liang; Yan-lei Pan; Yu-kun Song; Shu-yi Wei
• Keywords: Weak isospin; Fragmentation

We make a systematic study of the isospin symmetry fragmentation functions by taking decay contributions into account. assume in strong interactions and show that unpolarized case is held for $\Lambda$ only tiny violations are allowed other hadrons such as nucleon pions due to from weak decays. present rough estimate magnitudes violations. In polarized case, we violation production should be recent Belle data on transverse polarization can reproduced if kept corresponding functions.