Evidence for radial flow of thermal dileptons in high-energy nuclear collisions

Details Evidence for radial flow of thermal dileptons in high-energy nuclear collisions Evidence for radial flow of thermal dileptons in high-energy nuclear collisions

2007-11-12

arxiv.org/abs/0711.1816v1

Phys.Rev.Lett.100:022302,2008

Physics

Nuclear Physics

Nuclear Experiment

Accepted for publication in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.100.022302

The NA60 experiment at the CERN SPS has studied low-mass dimuon production in 158 AGeV In-In collisions. An excess of pairs above the known meson decays has been reported before. We now present precision results on the associated transverse momentum spectra. The slope parameter Teff extracted from the spectra rises with dimuon mass up to the rho, followed by a sudden decline above. While the initial rise is consistent with the expectations for radial flow of a hadronic decay source, the decline signals a transition to an emission source with much smaller flow. This may well represent the first direct evidence for thermal radiation of partonic origin in nuclear collisions.

Affiliated with

Also associated with

No associations

Rating

Evidence for radial flow of thermal dileptons in high-energy nuclear collisions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Evidence for radial flow of thermal dileptons in high-energy nuclear collisions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for radial flow of thermal dileptons in high-energy nuclear collisions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-129052