| Pàgina inicial > Angular distributions of light projectile fragments in deep inelastic Pb+Em interactions at 160 A GeV |
| Article | |
| Title | Angular distributions of light projectile fragments in deep inelastic Pb+Em interactions at 160 A GeV |
| Author(s) |
Adamovich, M I ; Aggarwal, M M ; Alexandrov, Yu A ; Andreeva, N P ; Badyal, S K ; Basova, E E ; Bhalla, K B ; Bhasin, A ; Bhatia, V S ; Bradnova, V ; Bubnov, V I ; Cai, X ; Chasnikov, I Yu ; Chen, G M ; Chernova, L P ; Chernyavsky, M M ; Dhamija, S ; El-Chenawi, K F ; Felea, D ; Feng, S Q ; Gaitinov, A S ; Ganssauge, E R ; Garpman, S I A ; Gerassimov, S G ; Gheata, A ; Gheata, M ; Grote, J ; Gulamov, K G ; Sen-Gupta, S K ; Gupta, V K ; Henjes, U ; Jakobsson, B ; Kanygina, E K ; Karabova, M ; Kharlamov, S P ; Kovalenko, A D ; Krasnov, S A ; Kumar, V ; Larionova, V G ; Lepekhin, F G ; Levitskaya, O V ; Li, Y X ; Liu, L S ; Lokanathan, S ; Lord, J J ; Lukicheva, N S ; Lu, Y ; Luo, S B ; Mangotra, L K ; Manhas, I ; Mittra, I S ; Musaeva, A K ; Nasyrov, S Z ; Navotny, V S ; Nystrand, J ; Otterlund, I ; Peresadko, N G ; Qian, W Y ; Qin, Y M ; Raniwala, R ; Rao, N K ; Röper, M D ; Rusakova, V V ; Saidkhanov, N ; Salmanova, N A ; Seitimbetov, A M ; Seliverstov, D M ; Simonov, B B ; Sethi, R ; Singh, B ; Skelding, D ; Söderström, K ; Stenlund, E ; Svechnikova, L N ; Svensson, T ; Tawfik, A M ; Tothova, M ; Tretyakova, M I ; Trofimova, T P ; Tuleeva, U I ; Vashisht, V ; Vokal, S ; Vrláková, J ; Wang, H Q ; Wang, X R ; Weng, Z Q ; Wilkes, R J ; Yang, C B ; Yin, Z B ; Yu, L Z ; Zhang, D H ; Zheng, P Y ; Zhokhova, S I ; Zhou, D C |
| Affiliation | (CERN) |
| Publication | 1999 |
| Imprint | 1999 |
| In: | Eur. Phys. J. A 6, 4 (1999) pp.421-5 |
| Subject category | Nuclear Physics |
| Accelerator/Facility, Experiment | CERN SPS ; EMU01 |
| Abstract | The nuclear emulsion was exposed at CERN by the lead projectile at 160 A GeV. The angles between any pair of fragments with Z=2-4 have been measured in the emulsion plane for the events which did not contain heavy fragments. The constant characterizing the normal angle ( phi ) distribution of the fragment momentum projection onto the emulsion plane with respect to initial projectile momentum p/sub 0/ is found to be sigma /sub phi /=(0.37+or-0.02) mrad. Corresponding value sigma /sub 0/=(121+or-6) MeV/c of nucleon momentum distribution in the lead nucleus coincides with that expected from Fermi momentum distribution for this nucleus. The peak in the pair-angle distribution of double-charged fragments, /sup 8/Be to 2 alpha , is presented for the region of small angles (<0.1 mrad). The fraction of alpha -particles coming from the decay of the ground state /sup 8/Be is found to be (13+or-2)601130f their whole number. (14 refs). |