The combination of the ionization energy loss (dE/dx) from Time Projection Chamber (TPC) at $simeq8$% resolution and multi-gap resistive plate chamber time-of-flight (TOF) at 85$ps$ provides powerful particle identification. We present spectra of identified charged pions from transverse momentum $p_Tsimeq0.2$ GeV/c to ~7-8 GeV/c in Au+Au collisions at $sqrt{s_{_{NN}}}=62.4$ GeV. Physics implications will be discussed.
تحميل البحث