https://doi.org/10.1140/epja/i2019-12836-9
Regular Article - Theoretical Physics
Probing confinement by direct photons and dileptons
1
Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, 03143, Kiev, Ukraine
2
Bogoliubov Laboratory of Theoretical Physics, JINR, 141980, Dubna, Russia
3
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991, Moscow, Russia
* e-mail: snigirev@lav01.sinp.msu.ru
Received:
9
July
2019
Accepted:
23
July
2019
Published online:
30
August
2019
The intensive synchrotron radiation resulting from quarks interacting with the collective confining color field in relativistic heavy ion collisions is discussed. The spectrum of photons with large transverse momentum is calculated and compared with the experimental data to demonstrate the feasibility of this type of radiation. A study of the earlier predicted azimuthal anisotropy in the angular distribution of dileptons with respect to the three-momentum of the pair is performed as well. This boundary-induced mechanism of lepton pair production is shown to possess the features that are distinctly different from the standard mechanisms and can potentially provide an efficient probe of quark-gluon plasma formation.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2019
