Understanding of the BESIII measurement of (anti)hyperon-nucleon scattering
Year: 2025
Type: article
Abstract: Focusing on the recent measurements of the scattering processes Λ ¯ p → Λ ¯ p and Λ p → Λ p reported by BESIII, we offer a dynamical interpretation of the differences in the measured total and differential cross sections for both processes. This discrepancy arises because the u -channel contribution is forbidden for Λ ¯ p → Λ ¯ p but allowed for Λ p → Λ p . Additionally, we examine the enhancement effect in the forward angle region of the differential cross section for Λ ¯ p elastic scattering, attributed to the t -channel contribution. This work serves as a test to the scattering mechanism involved in these reactions.
Source: Physics Letters B
Authors: Xiao-Yun Wang, Yuan Gao, Xiang Liu
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Funders: National Natural Science Foundation of China, Chinese Academy of Sciences, Natural Science Foundation of Gansu Province, Higher Education Discipline Innovation Project, West Light Foundation of the Chinese Academy of Sciences, Key Technologies Research and Development Program, National Key Research and Development Program of China, Fundamental Research Funds for the Central Universities
OpenAlex ID: W4407511154