Where does the rho go? Chirally symmetric vector mesons in the quark - gluon plasma

Pisarski, Robert D.

doi:10.1103/PhysRevD.52.R3773

Where does the rho go? Chirally symmetric vector mesons in the quark - gluon plasma

Robert D. Pisarski
(
- Brookhaven
)

Mar, 1995

4 pages

Published in:

Phys.Rev.D 52 (1995) R3773-R3776

e-Print:

hep-ph/9503328 [hep-ph]

DOI:

10.1103/PhysRevD.52.R3773

Report number:

BNL-RP-951

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Abstract:

If the phase transition of

QCD

at nonzero temperature is dominated by the (approximate) restoration of chiral symmetry, then the transition might be characterized using a gauged linear sigma model. Assuming that vector meson dominance holds, such sigma models predict that at the temperature of chiral restoration, the pole mass of the thermal

\rho

meson is greater than that at zero temperature; in the chiral limit and in weak coupling this mass is

\sim 962 \, MeV

. The width of the thermal

\rho-a_1

peak is estimated to be about

200 - 250 \, MeV

.

Note:

4 pages, ReVTeX.

quark gluon: plasma
symmetry: chiral
quantum chromodynamics
critical phenomena: finite temperature
vector dominance
sigma model: linear
rho(770): mass
mass: rho(770)
mass: pole
pole: mass

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Figures(0)

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