Naslov
Strangeness Enhancement in Cu-Cu and Au-Au Collisions at √sNN=200  GeV

Autori
Agakishiev, G. ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Zoulkarneeva, Y.

Izvornik
Physical Review Letters (0031-9007) 108 (2012); 072301-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Stangeness; collisions; STAR; energy; enhancement

Sažetak
We report new STAR measurements of midrapidity yields for the Λ, Λ̅ , KS0, Ξ-, Ξ̅ +, Ω-, Ω̅ + particles in Cu+Cu collisions at √sNN=200  GeV, and midrapidity yields for the Λ, Λ̅ , KS0 particles in Au+Au at √sNN=200  GeV. We show that, at a given number of participating nucleons, the production of strange hadrons is higher in Cu+Cu collisions than in Au+Au collisions at the same center-of- mass energy. We find that aspects of the enhancement factors for all particles can be described by a parametrization based on the fraction of participants that undergo multiple collisions.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
STAR Collaboration

POVEZANOST RADA