Speaker
Prof.
Bikash Sinha
(Variable Energy Cyclotron Centre)
Description
The invariant mass and transverse momentum spectra of lepton pairs
for In-In collision at $\sqrt{s_{\mathrm {NN}}}=17.3$ GeV have been studied.
We find that the broadening of the $\rho$ mesons spectral function
due to its interaction with the thermal baryons causes substantial
excess of dimuons at low mass region. Both the spectra agrees
well with the experimental observations made by the NA60 collaborations. We argue that the non-monotonic variation of the slope parameter extracted from the transverse mass spectra for various invariant mass
bins indicate the presence of two different phases during the evolution of the
fireball.
Author
Mr
Jajati K. Nayak
(Variable Energy Cyclotron Centre)
Co-authors
Prof.
Bikash Sinha
(Variable Energy Cyclotron Centre)
Dr
Jan-e Alam
(Variable Energy Cyclotron Centre)
Dr
Sourav Sarkar
(Variable Energy Cyclotron Centre)