Structure of virtual photon polarization in ultrarelativistic heavy-ion collisions
Abstract
Anisotropy in heavy-ion collisions leads to polarization of both direct and virtual photons, the latter detected via internal conversion to dileptons pairs. Thus measurement of photon polarization probes the anisotropy at all stages of collisions. In order to characterize the polarization of virtual photons, we derive here the general structure of the photon polarization operator, , in an anisotropic medium, in terms of the four spectral functions, two transverse and one longitudinal, as usual, plus a new spectral function that reflects anisotropy in asymmetric collisions; and derive the local production rate of dilepton pairs in terms of these four functions.
- Authors:
-
- Univ. of Illinois, Urbana, IL (United States). Dept. of Physics; RIKEN, Wako (Japan). iTHES Research Group. iTHEMS Program
- RIKEN, Wako (Japan). iTHES Research Group. iTHEMS Program. Nishina Center
- Kent State Univ., Kent, OH (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Kent State Univ., Kent, OH (United States); RIKEN, Wako (Japan)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF); Japan Society for the Promotion of Science (JSPS)
- OSTI Identifier:
- 1502352
- Grant/Contract Number:
- SC0013470; PHY1305891; PHY1066292; 25287066
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Physics. A
- Additional Journal Information:
- Journal Volume: 967; Journal ID: ISSN 0375-9474
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ultrarelativistic heavy-ion collisions; anisotropy; photon polarization; dilepton pairs
Citation Formats
Baym, Gordon, Hatsuda, Tetsuo, and Strickland, Michael. Structure of virtual photon polarization in ultrarelativistic heavy-ion collisions. United States: N. p., 2017.
Web. doi:10.1016/j.nuclphysa.2017.05.068.
Baym, Gordon, Hatsuda, Tetsuo, & Strickland, Michael. Structure of virtual photon polarization in ultrarelativistic heavy-ion collisions. United States. https://doi.org/10.1016/j.nuclphysa.2017.05.068
Baym, Gordon, Hatsuda, Tetsuo, and Strickland, Michael. Mon .
"Structure of virtual photon polarization in ultrarelativistic heavy-ion collisions". United States. https://doi.org/10.1016/j.nuclphysa.2017.05.068. https://www.osti.gov/servlets/purl/1502352.
@article{osti_1502352,
title = {Structure of virtual photon polarization in ultrarelativistic heavy-ion collisions},
author = {Baym, Gordon and Hatsuda, Tetsuo and Strickland, Michael},
abstractNote = {Anisotropy in heavy-ion collisions leads to polarization of both direct and virtual photons, the latter detected via internal conversion to dileptons pairs. Thus measurement of photon polarization probes the anisotropy at all stages of collisions. In order to characterize the polarization of virtual photons, we derive here the general structure of the photon polarization operator, ρμν, in an anisotropic medium, in terms of the four spectral functions, two transverse and one longitudinal, as usual, plus a new spectral function that reflects anisotropy in asymmetric collisions; and derive the local production rate of dilepton pairs in terms of these four functions.},
doi = {10.1016/j.nuclphysa.2017.05.068},
journal = {Nuclear Physics. A},
number = ,
volume = 967,
place = {United States},
year = {Mon Sep 25 00:00:00 EDT 2017},
month = {Mon Sep 25 00:00:00 EDT 2017}
}
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Figures / Tables:
Fig. 1: (a) Compton scattering of a gluon against a quark or anti-quark producing a photon; (b) production of a photon and gluon by quark-antiquark annihilation.
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Works referencing / citing this record:
Tensor polarizability of the vector mesons from SU(3) lattice gauge theory
journal, November 2018
- Luschevskaya, E. V.; Teryaev, O. V.; Golubkov, D. Yu.
- Journal of High Energy Physics, Vol. 2018, Issue 11
Figures / Tables found in this record:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.