Extracting the magnitude of magnetic field at freeze-out in heavy-ion collisions

Abstract

A strong magnetic field influences significantly the masses of the charged light mesons. For example, the mass of charged pion increases with the magnetic field increasing. We propose this mechanism as a possible way to extract the magnitude of magnetic field at freeze-out in heavy ion collisions and thus help constrain its lifetime which is currently a major open question to resolve. Specifically we show that the ratio between the yield of charged pions and that of charged rhos is very sensitive to the magnetic field value at freeze-out. By using a viscous-hydrodynamic framework (iEBE-VISHNU) to simulate heavy ion collisions and implementing magnetic-field-dependent meson masses, we compute their yields and predict the dependence of such ratio on the magnetic field. We suggest to use this ratio of charged rho yield over charged pion yield as an experimental observable to extract the possible magnetic field at freeze-out in heavy ion collisions.

13 pages, 11 figures

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Cited by in corpus (13)

• Chiral properties of (2+1)-flavor QCD in strong magnetic fields at zero temperature
• Recent progresses on QCD phases in a strong magnetic field -- views from Nambu--Jona-Lasinio model
• Chiral Magnetic Effect in Heavy Ion Collisions: The Present and Future
• Spin alignment of vector mesons from quark dynamics in a rotating medium
• Magnetic catalysis in the (2+1)-dimensional Gross-Neveu model
• Thermalization and prethermalization in the soft-wall AdS/QCD model
• Charged rho superconductor in the presence of magnetic field and rotation
• The BEST framework for the search for the QCD critical point and the chiral magnetic effect
• Scalar bosons in Bonnor-Melvin-$\Lambda$ universe: Exact solution, Landau levels and Coulomb-like potential
• Mass Spectra and Decay of Mesons under Strong External Magnetic Field
• Chiral Properties of $(2+1)$-Flavor QCD in Magnetic Fields at Zero Temperature
• Polarization Dynamics in Paramagnet of Charged Quark-Gluon Plasma
• Turning up and down strong magnetic fields in relativistic nuclear collisions