Energy dependence for relativistic hadron emission from super(32)S nuclear collisions

In this experiment, super(32)S interaction with emulsion nuclei is examined at 3.7A and 200A GeV. Backward relativistic hadron production seems to be an exact decay system, depending on the target size. For emulsion nuclei, the decay constant of this system nearly equals 1.3. Independent of the proj...

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Bibliographic Details
Published inCanadian journal of physics Vol. 90; no. 6; pp. 515 - 523
Main Authors Abdelsalam, A, Badawy, B M, Hafiz, ME
Format Journal Article
LanguageEnglish
Published 01.06.2012
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Summary:In this experiment, super(32)S interaction with emulsion nuclei is examined at 3.7A and 200A GeV. Backward relativistic hadron production seems to be an exact decay system, depending on the target size. For emulsion nuclei, the decay constant of this system nearly equals 1.3. Independent of the projectile size and energy, the backward relativistic hadrons are produced with probability values of 20%-30%. For projectile nuclei with mass numbers greater than or equal to 6 and at any incident energy, the average multiplicity of these backward hadrons tends to a saturation value of 0.4. Regarding the multiplicity range of forward relativistic hadrons, reaching 60 hadrons per event at 3.7A GeV and extending to 400 hadrons per event at 200A GeV, energy plays a fundamental role in forward relativistic hadron production. The results strongly support the assumption that relativistic hadrons are created as a result of energy from participant nucleons.Original Abstract: La presente experience examine l'interaction de super(32)S avec les noyaux d'une emulsion a 3,7A et 200A GeV. La production vers l'arriere de hadrons relativistes ressemble exactement a un systeme se desintegrant, dependant des dimensions de la cible. Pour les noyaux de l'emulsion, la constante de desintegration de ce systeme est pratiquement egale a 1,3. Independamment de la dimension du projectile et de son energie, les hadrons relativistes vers l'arriere sont produits avec des probabilites 20 a 30 %. Pour des projectiles de A greater than or equal to 6 et a toutes les energies, la multiplicite moyenne des hadrons emis vers l'arriere tend a saturer vers 0,4. En ce qui a trait au domaine de multiplicite des hadrons emis vers l'avant, atteignant en nombre 60 hadrons par evenement a 3,7A GeV et 400 hadrons par evenement a 200A GeV, l'energie joue le role fondamental dans la production de hadrons relativistes vers l'avant. Les resultats supportent fortement l'hypothese que la creation des hadrons relativistes resulte de l'energie des nucleons participant au mecanisme.
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ISSN:0008-4204
1208-6045
DOI:10.1139/p2012-048