Phenomenology of strangeness production at high energies
Abdel Nasser Tawfik; Hayam Yassin; Eman R. Abo Elyazeed; Muhammad Maher; Abdel Magied Diab; Magda Abdel Wahab; Eiman Abou El Dahab;
Abstract
The strange-quark occupation factor ($\gamma_s$) is determined from the
statistical fit of the multiplicity ratio $\mathrm{K}^+/\pi^+$ in a wide range
of nucleon-nucleon center-of-mass energies ($\sqrt{s_{NN}}$). From this
single-strange-quark-subsystem, $\gamma_s(\sqrt{s_{NN}})$ was parametrized as a
damped trigonometric functionality and successfully implemented to the hadron
resonance gas model, at chemical semi-equilibrium. Various particle ratios
including $\mathrm{K}^-/\pi^-$, $\mathrm{\Lambda}/\pi^-$, and
$\mathrm{\bar{\Lambda}}/\pi^-$ are well reproduced. The phenomenology of
$\gamma_s(\sqrt{s_{NN}})$ suggests that, the hadrons ($\gamma_s$ raises) at
$\sqrt{s_{NN}} \simeq 7~$GeV seems to undergo a phase transition to a mixed
phase ($\gamma_s$ declines), which is then derived into partons ($\gamma_s$
remains unchanged with increasing $\sqrt{s_{NN}}$), at $\sqrt{s_{NN}} \simeq
20~$GeV.
statistical fit of the multiplicity ratio $\mathrm{K}^+/\pi^+$ in a wide range
of nucleon-nucleon center-of-mass energies ($\sqrt{s_{NN}}$). From this
single-strange-quark-subsystem, $\gamma_s(\sqrt{s_{NN}})$ was parametrized as a
damped trigonometric functionality and successfully implemented to the hadron
resonance gas model, at chemical semi-equilibrium. Various particle ratios
including $\mathrm{K}^-/\pi^-$, $\mathrm{\Lambda}/\pi^-$, and
$\mathrm{\bar{\Lambda}}/\pi^-$ are well reproduced. The phenomenology of
$\gamma_s(\sqrt{s_{NN}})$ suggests that, the hadrons ($\gamma_s$ raises) at
$\sqrt{s_{NN}} \simeq 7~$GeV seems to undergo a phase transition to a mixed
phase ($\gamma_s$ declines), which is then derived into partons ($\gamma_s$
remains unchanged with increasing $\sqrt{s_{NN}}$), at $\sqrt{s_{NN}} \simeq
20~$GeV.
Other data
| Title | Phenomenology of strangeness production at high energies | Authors | Abdel Nasser Tawfik ; Hayam Yassin ; Eman R. Abo Elyazeed ; Muhammad Maher ; Abdel Magied Diab ; Magda Abdel Wahab ; Eiman Abou El Dahab | Keywords | High Energy Physics - Phenomenology;High Energy Physics - Phenomenology | Issue Date | 16-Jan-2017 | Journal | EPL, 116 (2016) 62001 | DOI | 6 62001 http://arxiv.org/abs/1701.04816v1 116 10.1209/0295-5075/116/62001 |
Scopus ID | 2-s2.0-85014023691 |
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