# Majorana flipping of quarkonium spin states in transient magnetic field

## TL;DR

This paper shows that transient, inhomogeneous magnetic fields in non-central heavy ion collisions can induce Majorana spin flipping in quarkonium states through non-adiabatic evolution, revealing a novel dynamical mixing mechanism.

## Contribution

It introduces the concept of Majorana spin flipping in quarkonia caused by inhomogeneous, transient magnetic fields, a phenomenon not previously described.

## Key findings

- Transient magnetic fields cause spin state mixing in quarkonia.
- Non-adiabatic evolution leads to Majorana spin flipping.
- Inhomogeneity is crucial for the observed effects.

## Abstract

We demonstrate that spin flipping transitions occur between various quarkonium spin states due to transient magnetic field produced in non central heavy ion collisions (HICs). The inhomogeneous nature of the magnetic field results in \textit{non adiabatic evolution} of (spin)states of quarkonia moving inside the transient magnetic environment. Our calculations explicitly show that the consideration of azimuthal inhomogeneity gives rise to dynamical mixing between different spin states owing to Majorana spin flipping. Notably, this effect of non-adiabaticity is novel and distinct from previously predicted mixing of the singlet and one of the triplet states of quarkonia in the presence of a static and homogeneous magnetic field.