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Radiative energy loss in the absorptive QGP: taming the long formation lengths in coherent emission
Bluhm M., Gossiaux P.-B., Gousset T., Aichelin J.
Excited QCD 2012, Peniche : Portugal (2012) - http://hal.in2p3.fr/in2p3-00730449
Physique/Physique des Hautes Energies - Phénoménologie
Physique/Physique Nucléaire Théorique
Radiative energy loss in the absorptive QGP: taming the long formation lengths in coherent emission
M. Bluhm1, Pol-Bernard Gossiaux ()1, T. Gousset1, Jörg Aichelin1
1 :  SUBATECH - Laboratoire SUBATECH Nantes
http://www-subatech.in2p3.fr/
CNRS : UMR6457 – IN2P3 – Université de Nantes – École Nationale Supérieure des Mines - Nantes
4, rue Alfred Kastler - 44070 Nantes Cedex 03
France
In an absorptive plasma, damping of radiation mechanisms can influence the bremsstrahlung formation in case of large radiation formation lengths. We study qualitatively the influence of this effect on the gluon bremsstrahlung spectrum off heavy quarks in the quark-gluon plasma. Independent of the heavy-quark mass, the spectrum is found to be strongly suppressed in an intermediate gluon energy region which grows with increasing gluon damping rate and increasing energy of the heavy quark. Thus, just as polarization effects in the plasma render the bremsstrahlung spectra independent of the quark mass in the soft gluon regime, damping effects tend to have a similar impact for larger gluon energies.

Communications sans actes
2012

Excited QCD 2012
Peniche
Portugal
06/05/2012
12/05/2012
P.B. Gossiaux

SUBATECH-TheorieHE
contribution to the International Meeting "Excited QCD", Peniche, Portugal, 06 - 12 May 2012

Lien vers le texte intégral : 
http://fr.arXiv.org/abs/1209.1149