Phase transition, thermodynamics and transverse momentum spectra of mass identified hadrons in 1.8 TeV center of mass proton-antiproton collisions
Abstract
Multiplicity dependence of the mass identified (pion, K and p) transverse momentum $(p\sb{t})$ spectra were measured. We assume the applicability of thermo-dynamical concepts and the $\langle p\sb{t}\rangle \sim$ T (temperature) and $dN\sb{c}/dY$ $\sim$ S (entropy density) identifications for highly inelastic collisions in the central region of high energy 1.8 TeV center of mass proton-antiproton collisions. Accepting these assumptions we seek evidence for a first order phase transition of hadronic matter. In the first approximation the experimental T versus S isobar curves are consistent with a first order phase transition where the third thermodynamical variable the pressure is fixed for a given mass. Superimposed on the underlying thermal picture is the radial flow, which alters the exponential fall off of the $p\sb{t}$ distribution of the pions.
Degree
Ph.D.
Advisors
Carmony, Purdue University.
Subject Area
Particle physics
Off-Campus Purdue Users:
To access this dissertation, please log in to our
proxy server.