Dilepton enhancement by thermal pion annihilation in the CERES experiment - INSPIRE

DataBETA

Dilepton enhancement by thermal pion annihilation in the CERES experiment

H.J. Schulze
(
- Rostock U.
)
,
D. Blaschke
(
- Rostock U.
)

Jul, 1996

13 pages

Published in:

Phys.Lett.B 386 (1996) 429-436

e-Print:

nucl-th/9607055 [nucl-th]

DOI:

10.1016/0370-2693(96)00908-2

Report number:

MPG-VT-UR-85-96

View in:

reference search18 citations

Citations per year

Abstract:

We compare the recent CERES data on dielectron production in 200 GeV/u S+Au collisions with the theoretical predictions due to pion annihilation in a thermal hadronization and a string fragmentation scenario. Both models yield similar results for the dilepton mass spectrum. A satisfactory description of the experimental spectrum requires an in-medium reduction of the rho-mass and a freeze-out temperature of about 150 MeV in the thermal model. We emphasize and discuss the influence of experimental acceptance and resolution corrections.

Note:

9 pages, RevTex, 4 eps figures, To appear in Phys. Lett. B

scattering: heavy ion
relativistic
sulfur
gold
final state: dilepton
electron: pair production
pi: annihilation
string model: fragmentation
thermodynamics: hadronization
quark: gas

References(48)

Figures(4)

Enhanced production of low mass electron pairs in 200-GeV/u S - Au collisions at the CERN SPS

CERES

Collaboration

•

G. Agakichiev
(
- Heidelberg, Max Planck Inst.
)

et al.

- Phys.Rev.Lett. 75 (1995) 1272-1275
•
DOI:
- 10.1103/PhysRevLett.75.1272

Dilepton production at SPS energies

- Phys.Lett.B 363 (1995) 35-40
•
e-Print:
- hep-ph/9508233
•
DOI:
- 10.1016/0370-2693(95)01214-B

Enhancement of low mass dileptons in heavy ion collisions

- Phys.Rev.Lett. 75 (1995) 4007-4010
•
e-Print:
- nucl-th/9504025
•
DOI:
- 10.1103/PhysRevLett.75.4007

Medium modifications of the rho meson at CERN SPS energies

G. Chanfray
(
- Lyon, IPN
)
,
R. Rapp
(
- Lyon, IPN and
- Julich, Forschungszentrum
)
,
J. Wambach
(
- Lyon, IPN and
- Julich, Forschungszentrum
)

- Phys.Rev.Lett. 76 (1996) 368-371
•
e-Print:
- hep-ph/9508353
•
DOI:
- 10.1103/PhysRevLett.76.368

Thermal and hadrochemical equilibration in nucleus-nucleus collisions at the SPS

P. Braun-Munzinger
(
- SUNY, Stony Brook
)
,
J. Stachel
(
- SUNY, Stony Brook
)
,
J.P. Wessels
(
- SUNY, Stony Brook
)
,
N. Xu
(
- SUNY, Stony Brook
)

- Phys.Lett.B 365 (1996) 1-6
•
e-Print:
- nucl-th/9508020
•
DOI:
- 10.1016/0370-2693(95)01258-3

Highly Relativistic Nucleus-Nucleus Collisions: The Central Rapidity Region

J.D. Bjorken
(
- Fermilab
)

- Phys.Rev.D 27 (1983) 140-151
•
DOI:
- 10.1103/PhysRevD.27.140

Direct Production of Photons and Dileptons in Thermodynamical Models of Multiple Hadron Production

E.L. Feinberg
(
- CERN
)

- Nuovo Cim.A 34 (1976) 391

Quark Matter Diagnostics

G. Domokos
(
- Johns Hopkins U.
)
,
Joseph I. Goldman
(
- Johns Hopkins U.
)

- Phys.Rev.D 23 (1981) 203
•
DOI:
- 10.1103/PhysRevD.23.203

Direct Lepton Production in High-energy Collisions of Nuclei

G. Domokos
(
- Johns Hopkins U.
)

- Phys.Rev.D 28 (1983) 123
•
DOI:
- 10.1103/PhysRevD.28.123

Photon and Dilepton Emission from the Quark - Gluon Plasma: Some General Considerations

Larry D. McLerran
(
- Fermilab
)
,
T. Toimela
(
- Helsinki U.
)

- Phys.Rev.D 31 (1985) 545
•
DOI:
- 10.1103/PhysRevD.31.545

Diagnosing Quark Matter by Measuring the Total Entropy and the Photon Or Dilepton Emission Rates

R.C. Hwa
(
- Oregon U.
)
,
K. Kajantie
(
- Helsinki U.
)

- Phys.Rev.D 32 (1985) 1109
•
DOI:
- 10.1103/PhysRevD.32.1109

Dilepton Emission and the QCD Phase Transition in Ultrarelativistic Nuclear Collisions

- Phys.Rev.D 34 (1986) 2746,
- IN *COPPER MOUNTAIN 1986, PROCEEDINGS, NUCLEAR DYNAMICS*, 159-162.
•
DOI:
- 10.1103/PhysRevD.34.2746

Production of Thermal Dileptons in High-energy Nucleus-nucleus Collisions

K. Kajantie
(
- Helsinki U.
)
,
P.V. Ruuskanen
(
- Jyvaskyla U.
)

- Z.Phys.C 44 (1989) 167
•
DOI:
- 10.1007/BF01548595

Transverse Momentum Distribution of Dileptons in Different Scenarios for the {QCD} Phase Transition

- Phys.Rev.D 35 (1987) 2153
•
DOI:
- 10.1103/PhysRevD.35.2153

Rapidity dependence of thermal dileptons resulting from hadronizing quark - gluon matter with finite baryon charge

Burkhard Kampfer
(
- Forschungszentrum Dresden Rossendorf and
- Dresden, Tech. U.
)
,
O.P. Pavlenko
(
- Forschungszentrum Dresden Rossendorf and
- BITP, Kiev
)
,
M.I. Gorenstein
(
- BITP, Kiev
)
,
A. Peshier
(
- Dresden, Tech. U.
)
,
G. Soff
(
- Dresden, Tech. U.
)

- Z.Phys.A 353 (1995) 71-77
•
DOI:
- 10.1007/BF01297729

Muon pair production by pion annihilation in ultrarelativistic heavy ion collisions

H.J. Schulze
(
- Heidelberg U.
)

- Phys.Lett.B 244 (1990) 507-512
•
DOI:
- 10.1016/0370-2693(90)90355-A

What lepton pairs reveal about pions in the nuclear medium

C.L. Korpa
(
- Oregon State U.
)
,
S. Pratt
(
- Wisconsin U., Madison
)

- Phys.Rev.Lett. 64 (1990) 1502-1505
•
DOI:
- 10.1103/PhysRevLett.64.1502

Absorption and dispersion of pions at finite temperature

A. Schenk
(
- Bern U.
)

- Nucl.Phys.B 363 (1991) 97-113
•
DOI:
- 10.1016/0550-3213(91)90236-Q

The Pion at finite temperature and density

G.E. Brown
(
- SUNY, Stony Brook
)
,
V. Koch
(
- SUNY, Stony Brook
)
,
Mannque Rho
(
- Seoul Natl. U. and
- Saclay
)

- Nucl.Phys.A 535 (1991) 701-714
•
DOI:
- 10.1016/0375-9474(91)90483-M

Selfconsistent description of a thermal pion gas

R. Rapp
(
- Julich, Forschungszentrum
)
,
J. Wambach
(
- Julich, Forschungszentrum and
- Illinois U., Urbana and
- Bonn U.
)

- Phys.Lett.B 315 (1993) 220-225
•
e-Print:
- nucl-th/9306016
•
DOI:
- 10.1016/0370-2693(93)91604-L

Instantaneous chiral quark model for relativistic mesons in a hot and dense medium

et al.

- Nucl.Phys.A 586 (1995) 711-733
•
DOI:
- 10.1016/0375-9474(94)00809-2

Sigma and rho meson strength distributions from in-medium corrected pi pi correlations

- Phys.Lett.B 256 (1991) 325-330
•
DOI:
- 10.1016/0370-2693(91)91770-V

rho meson mass spectrum in dense matter

G. Chanfray
(
- Lyon, IPN
)
,
P. Schuck
(
- LPSC, Grenoble
)

- Nucl.Phys.A 545 (1992) 271C-276C,
- Nucl. Phys. A545 (1992) 271c-276c.
•
DOI:
- 10.1016/0375-9474(92)90467-X

Properties of rho mesons in nuclear matter

M. Herrmann
(
- Darmstadt, GSI
)
,
B.L. Friman
(
- Darmstadt, GSI and
- Darmstadt, Tech. Hochsch.
)
,
W. Norenberg
(
- Darmstadt, GSI and
- Darmstadt, Tech. Hochsch.
)

- Nucl.Phys.A 560 (1993) 411-436
•
DOI:
- 10.1016/0375-9474(93)90105-7

Properties of vector mesons at finite temperature: Effective Lagrangian approach

Chungsik Song
(
- Texas A-M
)

- Phys.Rev.D 53 (1996) 3962-3966
•
e-Print:
- hep-ph/9501364
•
DOI:
- 10.1103/PhysRevD.53.3962

1-25 of 48
1
2
25 / page