$J/ψ$ Production by Magnetic Excitation of $η_c$

Details $J/ψ$ Production by Magnetic Excitation of $η_c$ $J/ψ$ Production by Magnetic Excitation of $η_c$

2011-08-11

arxiv.org/abs/1108.2525v5

J. Phys. G: Nucl. Part. Phys. 39 (2012) 015007

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, minor modification, references added

Scientific paper

10.1088/0954-3899/39/1/015007

We compute the probability of $J/\psi$ production from the interaction between $\eta_c$ and the strong magnetic field generated in relativistic heavy ion collisions. The computation is first carried out in the heavy quark effective model, in which the M1 radiative transition is considered. Then we investigate the transition in the framework of non-relativistic heavy hadron chiral perturbation theory and show that the polarization of $J/\psi$ produced by this process is parallel to the direction of magnetic field and thus perpendicular to the reaction plane. The transition probability obtained in both approaches is of order $2\times 10^{-4}$.

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