Charged-Particle Density Distributions In Au Induced Interactions With Emulsion Nuclei At 10.7 A Gev

M I Adamovich, M M Aggarwal,Yu A Alexandrov,R Amirikas,N P Andreeva,Z V Anzon,R Arora,F A Avetyan,S K Badyal,A M Bakich,E S Basova,I K Bazarov,K B Bhalla,A Bhasin,V S Bhatia,V G Bogdanov,V Bradnova,V I Bubnov,T H Burnett,Xiaoyan Cai,D A Carshiev,I Y Chasnikov,L P Chernova,M M Chernyavski,S Dhamija,G Z Eligbaeva,L E Eremenko,A S Gaitinov,E R Ganssauge,S Garpman,S G Gerassimov,C Graf,James G Grote,K G Gulamov,S K Gupta,V K Gupta,B Jakobsson,L Just,S Kachroo,G S Kalyachkina,E K Kanygina,M Karabova,S Kitroo,S P Kharlamov,A D Kovalenko,S A Krasnov,V Kumar,V G Larionova, Y D Li,L S Liu,S Lokanatan,J J Lord,N S Lukicheva,S B Luo,L K Mangotra,N A Marutyan,A Y Mashkov,N V Maslennikova,I S Mittra,S Mokerjee,S Z Nasyrov,V S Navotny, J Nystrand,M Ochs,G I Orlova,I Otterlund,L S Peak,N G Peresadko,N V Petrov,V A Plyushchev,V V Rusakova,W Y Qian,Y M Qin, R Raniwala,N K Rao,M Roeper,N Saidkhanov,N A Salmanova,L G Sarkisova,V R Sarkisyan,G S Shabratova,A M Seitimbetov,C I Shakhova,S N Shpilev,D Skelding,K Soderstrom,Z I Solovjeva, E Stenlund,L N Svechnikova,Tomas Svensson,M Tothova,M I Tretyakova,T P Trofimova,U I Tuleeva,B P Tursunov,S Vokal,J Vrlakova,H Q Wang,Z Q Weng,R J Wilkes,Y L Xia,C B Yang,D H Zhang,P Y Zheng,S I Zhokhova,D C Zhou

PHYSICS LETTERS B（1995）

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摘要

Charged particle pseudorapidity density distributions in Au induced reactions in nuclear emulsion at 10.7 A GeV have been measured. In peripheral events the shower particle distribution exhibits a two peak structure while in central collisions it has a Gaussian shape. The spectator protons appear in the second peak in the pseudorapidity spectra and exhibits a broader momentum distribution than expected from Fermi motion. The produced particle yield in central collisions is not substantially different from phenomenological descriptions based on data from O and S induced reactions.

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charged particles

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