Anomalous baryon production in heavy ion collisions at LHC energies

Dániel Berényi; Attila Pásztor; Vladimir Skokov; Péter Lévai

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arXiv · 1208.0448

Anomalous baryon production in heavy ion collisions at LHC energies

Dániel Berényi·Attila Pásztor·Vladimir Skokov·Péter Lévai

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Abstract

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.

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Dániel Berényi, Attila Pásztor, Vladimir Skokov, Péter Lévai. 2012-08-02. Anomalous baryon production in heavy ion collisions at LHC energies. https://arxiv.org/abs/1208.0448

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