A Study of Power Suppressed Contributions in $J/\psi\rightarrow p\bar{p}$ Decay

26 Feb 2020 Kivel Nikolay

The power suppressed amplitude which describes the Pauli ($\sigma^{\mu\nu}$) coupling in the $J/\psi\to p\bar p$ decay is calculated within the effective field theory framework. It is shown that at the leading-order approximation this contribution is factorisable and the overlap with the hadronic final state can be described by collinear matrix elements... (read more)

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  • HIGH ENERGY PHYSICS - PHENOMENOLOGY