2024/10/01 by In Woo Park, Park, In Woo, H. Sako +7
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2410.00489
openalex publication_date 2024/10/01 · openalex created_date 2024/10/31 · openalex updated_date 2026/07/28
The mass shift a spin-1 particle moving in the nuclear medium will depend on its polarization direction. To study polarization-independent mass shifts in the medium, we explore methods to isolate each polarization direction of spin-1 mesons through the angular-dependent two-body decay modes. Specifically, we study ϕ→ K+K-, ρ→ππ, K*→ Kπ, ϕ→ e+e- and K1→ρK(K*π) decays. While each polarization mode can be isolated through angular dependencies, accomplishing the decomposition for the K1 meson further requires measuring the polarization of the ρ(K^*) meson. Concerning K* and K1 mesons, since both particles have vacuum widths smaller than 100 MeV, they are ideal candidates for experimentally measuring chiral partners. The simultaneous observation of mass shifts of these chiral partners would provide valuable insights into the contribution of chiral symmetry breaking to the generation of hadron masses.