Magnetic Field Effect on Charmonium Production in High Energy Nuclear Collisions

TL;DR

This paper investigates how strong magnetic fields in high energy nuclear collisions influence charmonium production and distribution, using a quantum mechanical model and comparing results with experimental data.

Contribution

It introduces a novel approach employing the time-dependent Schrödinger equation to study magnetic field effects on charmonium in heavy-ion collisions.

Findings

Model predicts magnetic field impacts on charmonium yield.

Comparison with CMS data validates the model.

First measurement attempt of magnetic field effects in such collisions.

Abstract

It is important to understand the strong external magnetic field generated at the very beginning of high energy nuclear collisions. We study the effect of the magnetic field on the charmonium yield and anisotropic distribution in Pb+Pb collisions at the LHC energy. The time dependent Schr\"odinger equation is employed to describe the motion of $c\bar{c}$ pairs. We compare our model prediction of non- collective anisotropic parameter $v_2$ of $J/\psi$s with CMS data at high transverse momentum. This is the first attempt to measure the magnetic field in high energy nuclear collisions.