Photoproduction of $\phi$-mesons in 200-Gev Au-Au collisions at RHIC

In ultra-peripheral collisions the heavy ions pass by each other at large impact parameters and do not interact through the strong interaction. The long-range electromagnetic interaction has a large cross section for the photoproduction of vector mesons. Relativistic ultraperipheral collisions are modeled with the Starlight Monte Carlo. Based on this Monte Carlo, I will discuss the expected signal from the $\phi \to K^ {+}K^{-} $ and $\phi \to K_{S}K_{L}$ decay channels in the Au- Au data obtained from the Solenoidal Tracker$(STAR)$ at RHIC.A preliminary analysis of the 2007 200GeV Au-Au dataset will also be presented.