Abstract
The emission of dileptons from a matter distribution undergoing longitudinal hydrodynamic expansion as might be produced in ultrarelativistic nuclear collisions is computed. Contributions come from quark-gluon plasma, from pion gas, and from a mixed phase while the matter undergoes a first-order confinement phase transition. This yield is compared with that expected from other sources. It is found that the signals from quark-gluon plasma and pion gas probably exceed such background for sufficiently high initial temperature. The ratio of dilepton rapidity density to the square of the pion rapidity density may provide a measurement of the phase transition temperature. The dilepton mass distribution for various values of transverse energy may provide a measure of vector-meson masses as a function of temperature, and a mass shift due to the restoration of chiral symmetry might be seen.
Original language | English (US) |
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Pages (from-to) | 2746-2754 |
Number of pages | 9 |
Journal | Physical Review D |
Volume | 34 |
Issue number | 9 |
DOIs | |
State | Published - 1986 |
Bibliographical note
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