Low mass dielectrons at LHC energy

Cleymans, J.; Redlich, K.; Satz, H.

doi:10.1007/BF01559449

Low mass dielectrons at LHC energy

J. Cleymans
(
- Cape Town U.
)
,
K. Redlich
(
- Bielefeld U. and
- Wroclaw U.
)
,
H. Satz
(
- Bielefeld U. and
- CERN
)

Apr, 1991

31 pages

Published in:

Z.Phys.C 52 (1991) 517-526

DOI:

10.1007/BF01559449

Report number:

CERN-TH-6079-91,
BI-TP-91-10

View in:

CERN Document Server

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Abstract: (Springer)

We study the thermal production of low mass dielectrons in central nucleus-nucleus collisions at LHC energy. We assume initial quark-gluon plasma production, followed by a first order quark-hadron phase transition and subsequent hadronization; the expansion of the system is described by Bjorken's hydrodynamical model. In the quark-gluon plasma, we include both the basisq

\bar q

annihilation process and lowest order QED and QCD corrections. In the hadronic phase, we consider pion annihilation as well as pion scattering with virtual bremsstrahlung leading to dielectron production. Our results are then compared to dielectron rates from π0 and η Dalitz decays. We conclude that it will be rather difficult to disentangle the quark-gluon plasma contributions from competing dielectron production processes.

nucleus nucleus: nuclear reaction
uranium
central region
electron: pair production
pair production: electron
mass spectrum: (positron electron)
(positron electron): mass spectrum
quark gluon: plasma
transition: quark hadron
critical phenomena

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