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Chinese Physics C> 1982, Vol. 6> Issue(6) : 657-664 

CLUSTER PHENOMENA OBSERVED IN EMULSION CHAMBER EXPERIMENTS IN ENERGY REGION OF 1015—1016 eV AND HADRON JETS WITH LARGE TRANSVERSE MOMENTA

  • Introducing hard quark scattering mechanism in hadron-hadron interactions of1015--1016 eV region, the propagation of cosmic rays through atmosphere is simulatedby using Monte-Carlo method. The results show that the qualitative features of "two-cluster" events observed in emulsion chamber experiments can be described qualitativelyby the large pr hadron jets produced in quark-quark scattering. But compared with theexperiments, the event rate obtained by us is rather small and the distance between twoclusters is too narrow. Some discussions for the characteristic of largs transverse mo-mentum phenomena in ultrahigh energy region and for improving model are given.
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    [1] Brazil-Japsn Collaboration,Journal of Phys, 46(1968). S660.[2] 任敬儒等,16th International Cosmic Ray Conference, Kyoto, 7(1979), 273[3] M. GF. Iattes, Y. Fnjimoto, S. Hasegawa, Phys. Reports,65(1980). No. 3.[4] P. Feynman, R. D., Field, G. C. Fox, Nucl. Phys., B128(1977), 1.[5] P. Feynman, R.D.Field, G. C. Fox, Phys. Rev., D18(1978), 3320.[6] B.D.Field R.P. Feynmaan, Phys. Rev., D15(1977),2590.[7] G. Cocconi, Nucl, Phys., B28(1971), 341.[8] K. Kasahara, S. Torl, T. Yuida, 16th Inaternational Cosmic Ray Conferennce, Kyoto, 13(1979), 70.[9] S .HayakaWa, Coamic Ray Physics, 1969 John Wiley and Sons, p. 744[10] D. Cline. F.Halien, J. Luthe, Phys.Rev. Lett., 31(1973),491.

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DING LIN-KAI, ZHU QING-QI and GUO KE-ZHUN. CLUSTER PHENOMENA OBSERVED IN EMULSION CHAMBER EXPERIMENTS IN ENERGY REGION OF 1015—1016 eV AND HADRON JETS WITH LARGE TRANSVERSE MOMENTA[J]. Chinese Physics C, 1982, 6(6): 657-664.
DING LIN-KAI, ZHU QING-QI and GUO KE-ZHUN. CLUSTER PHENOMENA OBSERVED IN EMULSION CHAMBER EXPERIMENTS IN ENERGY REGION OF 1015—1016 eV AND HADRON JETS WITH LARGE TRANSVERSE MOMENTA[J]. Chinese Physics C, 1982, 6(6): 657-664. shu
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Received: 1981-03-30
Revised: 1900-01-01
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CLUSTER PHENOMENA OBSERVED IN EMULSION CHAMBER EXPERIMENTS IN ENERGY REGION OF 1015—1016 eV AND HADRON JETS WITH LARGE TRANSVERSE MOMENTA

  • Received Date: 1981-03-30
  • Accepted Date: 1900-01-01
  • Available Online: 1982-12-05

Abstract: Introducing hard quark scattering mechanism in hadron-hadron interactions of1015--1016 eV region, the propagation of cosmic rays through atmosphere is simulatedby using Monte-Carlo method. The results show that the qualitative features of "two-cluster" events observed in emulsion chamber experiments can be described qualitativelyby the large pr hadron jets produced in quark-quark scattering. But compared with theexperiments, the event rate obtained by us is rather small and the distance between twoclusters is too narrow. Some discussions for the characteristic of largs transverse mo-mentum phenomena in ultrahigh energy region and for improving model are given.

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