Photon polarization as a probe for quark-gluon plasma dynamics

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dc.creatorIpp, Andreas
dc.creatorDi Piazza, Antonino
dc.creatorEvers, Jörg
dc.creatorKeitel, Christoph H.
dc.date2007-10-30
dc.date2008-07-24
dc.date.accessioned2026-07-07T11:53:53Z
dc.date.available2026-07-07T11:53:53Z
dc.descriptionProspects of measuring polarized photons emitted from a quark-gluon plasma (QGP) are discussed. In particular, the detection of a possible quark spin polarization in a QGP using circularly polarized photons emitted from the plasma is studied. Photons leave the QGP without further interaction and thus provide a primary probe for quark polarization within the QGP. We find that photon polarization cannot solely arise due to a possible QGP momentum space anisotropy, but may be enhanced due to it. In particular, for oblate momentum distributions and high photon energies, quark polarization is efficiently transfered to photon polarization. The role of competing sources of polarized photons in heavy-ion collisions is discussed.
dc.description12 pages, 4 figures; v2: discussion extended; accepted for publication in Physics Letters B
dc.identifierhttps://arxiv.org/abs/0710.5700
dc.identifierhttp://arxiv.org/abs/0710.5700
dc.identifierPhys.Lett.B666:315-319,2008
dc.identifierdoi:10.1016/j.physletb.2008.07.076
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204703
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titlePhoton polarization as a probe for quark-gluon plasma dynamics
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