QCD sum rules for magnetically induced mixing between ${\eta }_c$ and $J/\psi$

Abstract

We investigate the properties of charmonia in strong magnetic fields by using QCD sum rules. We show how to implement the mixing effects between ${\eta }_c$ and $J/\psi$ on the basis of field-theoretical approaches, and then show that the sum rules are saturated by the mixing effects with phenomenologically determined parameters. Consequently, we find that the mixing effects are the dominant contribution to the mass shifts of the charmonia in strong magnetic fields.

5 pages, 2 figures. Some descriptions improved. Published in PRL

References in corpus (4)

• Mass Shift and Width Broadening of J/psi in hot gluonic plasma from QCD Sum Rules
• Critical behavior of charmonia across the phase transition: A QCD sum rule approach
• Thermal modification of bottomonium spectra from QCD sum rules with the maximum entropy method
• Quarkonium formation time in quark-gluon plasma

Cited by in corpus (4)

• Novel quantum phenomena induced by strong magnetic fields in heavy-ion collisions
• Charmonium Spectroscopy in Strong Magnetic Fields by QCD Sum Rules: S-Wave Ground States
• Heavy meson spectroscopy under strong magnetic field
• The $\eta$ decay into 3$\pi$ in asymmetric nuclear medium