
Kaon and Lambda production in heavy ion collisions 


Content: 
A microscopic approach has been employed to study the $\Lambda$ and kaon
productions in heavy ion collisions. The productions of $K^+$ and
$\Lambda$ have been studied within the framework of Boltzmann transport
equation for various beam energies. An exhaustive set of reactions have been considered for strangeness productions in hadronic system.
We find a nonmonotonic horn like structure for $K^+/\pi^+$
(as experimentally observed) when plotted against centre of mass energies
($\sqrt{s_{\mathrm NN}}$) with the assumption of initial partonic phase
for $\sqrt{s_{\mathrm NN}}$ beyond a certain threshold.
However, the ratio shows a monotonic nature for all
$\sqrt{s_{\mathrm NN}}$ when a hadronic initial state is considered. We attribute this to the release of large number of colour degrees of freedom
at higher collision energies. Experimental values of $K^/\pi^$ are also reproduced within the ambit of the same formalism. Results on $\Lambda/\pi$ ratio for different $\sqrt{s_{\mathrm NN}}$  ranging from AGS to RHIC will also be reported. 
Id: 
81 
Place: 
Room: Main Auditorium 
Starting date: 

Duration: 
00' 
Primary Authors: 
Dr. BANIK, Sarmistha (VECC) 
CoAuthors: 
Mr. NAYAK, Jajati K. (VECC) Dr. ALAM, Jane (VECC) 
Presenters: 
Dr. BANIK, Sarmistha 







