Competition of $\beta$-delayed protons and $\beta$-delayed $\gamma$ rays in $^{56}$Zn and the exotic $\beta$-delayed $\gamma$-proton decay

TL;DR

This paper investigates the competition between $eta$-delayed protons and $eta$-delayed $ ext{gamma}$ rays in the decay of $^{56}$Zn, highlighting the first observation of exotic $eta$-delayed $ ext{gamma}$-proton decay in the $fp$ shell.

Contribution

It reports the first detection of $eta$-delayed $ ext{gamma}$-proton decay in $^{56}$Zn and analyzes the competition between different decay modes from the Isobaric Analogue State.

Findings

First observation of $eta$-delayed $ ext{gamma}$-proton decay in $^{56}$Zn.

Evidence of competition between $eta$-delayed protons and $eta$-delayed $ ext{gamma}$ rays.

Insights into decay mechanisms in the $fp$ shell.

Abstract

Remarkable results have been published recently on the $\beta$ decay of $^{56}$Zn. In particular, the rare and exotic $\beta$-delayed $\gamma$-proton emission has been detected for the first time in the $fp$ shell. Here we focus the discussion on this exotic decay mode and on the observed competition between $\beta$-delayed protons and $\beta$-delayed $\gamma$ rays from the Isobaric Analogue State.