Study of parity violation in Λ_c⁺→ϕp and Λ_c⁺ → ωp decays

2022/11/29 by PengCheng Hong, Hong, PengCheng, Fang Yan +5
Physics and Astronomy · #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Dark Matter and Cosmic Phenomena

paper · pdf · doi:10.48550/arxiv.2211.16014

Abstract

Evidence for CP violation in baryonic decays has not been seen in experiments. With large data events accumulated at e⁺e^- collider or Large Hadron Collider, the charmed baryon decays would provide a promising laboratory to test the CP symmetry. In this work, we formulate the Λ_c⁺→ϕp and Λ_c⁺→ωp decays for the measurements of their asymmetry parameters in weak decays at the BESIII or the LHCb experiments. The polarization transfer is analyzed in the two processes of e⁺ e^- →Λ_c⁺Λ_c^- and Λ_b⁰→ Λ⁺_cπ^-, and the formulas of the joint angular distribution for these processes are provided. The sensitivity of the measurement of asymmetry parameters for the above two decay processes is estimated for the future experiments.

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