Speaker
Asako Tsuji
(Hiroshima University (JP))
Description
A very strong magnetic field is expected to be created in relativistic heavy-ion collisions. The magnetic field is created in non-central collisions and the maximum strength reaches the order of 1014 T at the CERN-LHC energies and of 1013 T at the BNL-RHIC. The strength is far greater than of a magnetar which is known for the strongest magnetic field ( ~1011 T ) in the universe.
Various interesting phenomena are discussed with the ultra-strong magnetic field production, for example, chiral magnetic effects, synchrotron radiation, and non-linear behaviors of QED, e.g. photon splitting and real photon decaying into di-leptons.
The ultra-strong magnetic field is, however, not yet directly detected. A new approach to detect the field via direct virtual photon measurement is proposed. Polarization measurement of direct virtual photon is a good probe to directly detect the magnetic field.
In this presentation, theoretical estimate of the effects of the magnetic field and status of data analysis are reported for the strong magnetic field detection via direct virtual photon measurement with ALICE at the LHC.
Author
Asako Tsuji
(Hiroshima University (JP))
Co-author
Collaboration ALICE
(CERN)
