Kaon Production and Flow in Relativistic Heavy-Ion Collisions

  • The K+ production and flow in relahvistic heavy-ion collisions are investigated with the self-consistent relahvistic Boltzmann-Uehling-Uhlenbeck (RBUU) approach. The results show that the kaon flow is sensitive to both the kaonnucleon sigma term ∑KNand the equation of state (EOS) of nuclear matter. We find that anti-flow appears at cerhan large impact parameter, which can provide more definite information of the magnitude of ∑KN We have also analyzed the dependence of the total K+ production probability and the contributions from different channels on the EOS and the ∑KN. The sensitivity to the nuclear equation of the state and ∑KN is different for different channels. Overall, the contribution from N△ channel is the most important.
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  • [1] Mao Guangjun,Li Zhuxia,Zhuo Yizhong et al.Phys. Lett., 1996, B378:5 [2] Mao Guangjun,Li Zhuxia,Zhuo Yizhong. Phys.Rev.,1996, C53:2933 [3] Mao Guogiun, Li Zhuxia,Zhuo Yizhong.High Energy Phys.and Nucl. Phys.(in Chinese), 1996.20:826(茅广军,李祝霞,卓益忠.高能物理与核物理,1996,20:826)[4] Mao Guangjun.Li Zhuxia. Zhuo Yizhong.High Energy Phys.and Nucl. Phys.(in Chinese), 1996, 20:925(茅广军,李祝霞,卓益忠.高能物理与核物理,1996,20:925)[5] Mao Guangjun et al.High Energy Phys. and Nucl.Phys.(in Chinese), 1996, 20:1053(茅广军等.高能物理与核物理,1996,20 1053) [6] Mao Guangjun, Li Zhuxia. Zhuo Yizhong et al Phys. Lett, 1994, B327:183[7] Bertsch G F. Broen G E. Koch V et al. Nucl. Phys. 1988, A490:745 [8] Li G Q,Lee C R. Brown G E.Nucl. Phys, 1997, A625:372 [9] Randrup J.Ko C M. Nucl. Phys, 1980,A343:519; 1983,A411:537 [10] Tsushima K. Huang S W, Faessller A. Phys. Lett.1994, B337:245[11] Schaffner Jurgen. Gal Avraham et al. Nucl.Phys.1994, B334:268 [12] Brown G E,Lee C H, Rho M et al. Nucl Phys., 1994, A567:937[13] Brown G E, Kubodera K Rho M et al. Phys.Lett., 1992, B291:355 [14] Li G Q, Ko C M. NucL Phys., 1995, A594:460[15] Dong S J.Liu K F. Nucl Phys.1995, B42(proc.suppl):322 [16] Ritman J et al. GSI Scientific Annual Report. 19969 61[17] Bertsch G F.Kruse H.Gupta S das. Phys. Rev.1984, C29:673;Kruse H.Jacak B V, Stcker H. Phys. Rev Lett.,1985, 54:289;Molitoris J J, Stoeker H. Phys.Lett.1985, B162:47;Phys.Rev.1985, C32:346;Bertsch G F. Gupta S das. Phys. Reports, 1988, 160: 189;Zhou Hongbo, Li Z X, Zhuo Y Z et al Nucl. Phys.,1994, A580:627[18] Mao Guangju.Li Zhuxia. Zhuo Yizhong et al. Phys.Rev.,1994, C49:3137[19] Li Zhuxia. Mao Guangjun, Zhuo Yizhong, Hot and Dense Nuclear Matter edited by Greiner Walter,Stcker H. and Gellmann Andre, Vol. 375 of NATO Advanced Study Institute(Plenum, New York)[20] Waldhauser B M. Maruhn J A, Stocker H et al.Phys. Rev.,1988, C38: 1003
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Li Qingfeng and Li Zhuxia. Kaon Production and Flow in Relativistic Heavy-Ion Collisions[J]. Chinese Physics C, 1998, 22(12): 1119-1127.
Li Qingfeng and Li Zhuxia. Kaon Production and Flow in Relativistic Heavy-Ion Collisions[J]. Chinese Physics C, 1998, 22(12): 1119-1127. shu
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Received: 1998-03-28
Revised: 1900-01-01
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Kaon Production and Flow in Relativistic Heavy-Ion Collisions

    Corresponding author: Li Qingfeng,
  • China Institute of Atomic Energy, Beijing 1024132 Departmen of Physics. Notrhwest University,Xu'an 7100693 Institute of Theoretical Physics, The Chinese Academy of Sciences, Beijing 100080

Abstract: The K+ production and flow in relahvistic heavy-ion collisions are investigated with the self-consistent relahvistic Boltzmann-Uehling-Uhlenbeck (RBUU) approach. The results show that the kaon flow is sensitive to both the kaonnucleon sigma term ∑KNand the equation of state (EOS) of nuclear matter. We find that anti-flow appears at cerhan large impact parameter, which can provide more definite information of the magnitude of ∑KN We have also analyzed the dependence of the total K+ production probability and the contributions from different channels on the EOS and the ∑KN. The sensitivity to the nuclear equation of the state and ∑KN is different for different channels. Overall, the contribution from N△ channel is the most important.

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