Cascade and Omega productions from Pb+Pb Collisions at LHC energy

Abstract

Production of multi strange hadrons like cascade (Ξ) and omega(Ω) baryons are studied microscopically using rate equation at LHC energy. The rate equations for Ξ, Ω are solved simultaneously with other strange hadrons in an expanding medium. The results for Ξ and Ω are compared with the data obtained from Pb-Pb collisions at √ s NN = 2.76 TeV from ALICE experiments. The ratio of yields of Ξ and Ω to π are analysed with various initial conditions and compared with the experimental observations made for various charge particle multiplicities.

Microscopic study of strange hadron productions at the LHC with$\sqrt{s_{NN}}$=2.76 TeV

“…The details of the cross section for all these strangeness exchange reactions are calculated in [35]. We use the parametrised cross section [51]and evaluate the rate of production which is shown in [52].…”

“…The results are also compared with experimental observation. Using this cross section the rate has been evaluated in [52].…”

“…We had already discussed that the strangeness exchange channels play crucial role in Ξ productions over BB → Ξ Ξ. The rates of production of ΛΛ → N Ξ or KΛ → πΞ are 10 6 times more compared to the channels pp → Ξ Ξ [52].…”

“…and highlighted and discussed in details [52]. The other channel we have considered for Ω productions is B B → Ω Ω or pp → Ω Ω.…”

“…The other channel we have considered for Ω productions is B B → Ω Ω or pp → Ω Ω. The details of cross section and rate of production can be found in [36] and [52].…”