Anomalous baryon production in heavy ion collisions at LHC energies - INSPIRE

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Anomalous baryon production in heavy ion collisions at LHC energies

Daniel Berenyi
(
- Eotvos U. and
- Budapest, RMKI
)
,
Attila Pasztor
(
- Eotvos U.
)
,
Vladimir Skokov
(
- Brookhaven
)
,
Peter Levai
(
- Budapest, RMKI
)

Aug, 2012

7 pages

e-Print:

1208.0448 [hep-ph]

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Abstract: (arXiv)

In ultrarelativistic heavy ion collisions the baryon-meson ratio is not fully understood in the intermediate-to-high transverse momentum region. Although quark coalescence methods combined with jet fragmentation yield results close to the experimental data, some tendencies are not reproduced and require further investigation. We propose a new channel, namely extra quark-antiquark and diquark-antidiquark pair production from coherent gluon field created in the early stage of heavy ion collisions. This process is described quantitatively by the time-dependent Schwinger-mechanism. The extra diquark-quark coalescence yields are able to explain the measured anomalous baryon production.

Note:

7 pages, 9 figures

heavy ion: scattering
baryon: production
quark: coalescence
jet: fragmentation
gluon: coherence
meson baryon: ratio
time dependence
quark: pair production
CERN LHC Coll
meson: production

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Figures(9)

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