The NA60 experiment at the CERN SPS has studied meson production meson production in In-In collisions at 158 A GeV via both the K+K- and the μ+μ- decay channels. The yields and inverse slope parameters of the mT mT spectra observed in the two channels are compatible within errors, different from the large discrepancies seen in Pb-Pb collisions between the hadronic (NA49) and dimuon (NA50) decay channels. Possible physics implications are discussed.
|Number of pages||5|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Publication status||Published - 2011 May 23|
- Heavy ion collisions
- φ puzzle
ASJC Scopus subject areas
- Nuclear and High Energy Physics