Work

QCD sum rules study on weak decays $$\Omega _c^0\rightarrow \Omega ^- (\pi ^+, \rho ^+, l^+\nu _l)$$

Year: 2025

Type: article

Abstract: We study the weak decays of the charmed baryon $$\Omega _c^0$$ Ω c 0 to the $$\Omega ^-$$ Ω - baryon within the framework of QCD sum rules. A three-point correlation function is defined for calculating eight form factors governing the $$\Omega _c^0 \rightarrow \Omega ^-$$ Ω c 0 → Ω - transition. The cutting rules are employed to extract the double imaginary parts of the correlation functions, enabling their expression in the form of dispersive integrals. These form factors are then used to determine the branching fractions for the hadronic decays $$\Omega _c^0 \rightarrow \Omega ^- \pi ^+$$ Ω c 0 → Ω - π + and $$\Omega _c^0 \rightarrow \Omega ^- \rho ^+$$ Ω c 0 → Ω - ρ + , as well as the semi-leptonic decay $$\Omega _c^0 \rightarrow \Omega ^- \ell ^+ \nu _\ell $$ Ω c 0 → Ω - ℓ + ν ℓ . Our results are compared with existing theoretical predictions and experimental data, providing a comprehensive analysis of $$\Omega _c^0$$ Ω c 0 decays and offering valuable insights into the dynamics of charmed baryon decays.

Source: The European Physical Journal C

DOI: 10.1140/epjc/s10052-025-14436-y

Authors: Yu-Ji Shi, Jun Zeng

Institutions: East China University of Science and Technology, Hainan Normal University, Shanghai Jiao Tong University

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: National Natural Science Foundation of China, Hainan Normal University

Awards: G2458414589, G3604773249, G6613243837