Multiplicity and rapidity density in central collisions of 4.1 A GeV c<sup>-1</sup> <sup>22</sup>Ne nuclei in nuclear emulsions
M El-Nadi; O E Badawy; N Mettwalli; A Hussien; E A Shaat; Z Abou-Moussa; F A El-Wahid; M Riad; M El-Nadi; Dept. of Phys., Cairo Univ., Egypt; O E Badawy; Dept. of Phys., Cairo Univ., Egypt; N Mettwalli; Dept. of Phys., Cairo Univ., Egypt; A Hussien; Dept. of Phys., Cairo Univ., Egypt; E A Shaat; Dept. of Phys., Cairo Univ., Egypt; Z Abou-Moussa; Dept. of Phys., Cairo Univ., Egypt; F A El-Wahid; Dept. of Phys., Cairo Univ., Egypt; M Riad; Dept. of Phys., Cairo Univ., Egypt
Журнал:
Journal of Physics G: Nuclear and Particle Physics
Дата:
1993-12-01
Аннотация:
The multiplicity and pseudo-rapidity distributions of hadrons produced in central collisions of 4.1 A GeV c<sup>-1</sup> <sup>22</sup>Ne nuclei in nuclear emulsion are studied. The KNO scaled multiplicity distribution of the produced hadrons is compared with the predicted distributions according to the Lund model, dual parton model (DPM) and the negative binomial law. The negative binomial method seems to offer a better representation of the experimental data at 4.1 A GeV c<sup>-1</sup>. The energy density is calculated according to the Bjorken model and found to be less than the estimated energy density required for the transformation into the quark-gluon plasma phase.
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