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《中国物理C》（英文）编辑部
2024年10月30日
Chinese Physics C> 2000, Vol. 24> Issue(1) : 49-59 

Influence of the K－ Mesons Absorption to Their Production in the Heavy-Ion Collisions

  •  China Institute of Atomic Energy, Beijing 102413, China2 Center of Nuclear Theory, National Laboratory of Heavylon Accelerator, Lanzhou 730000, China3 Physics Department, Northwest University, Xi'an 710069, China4 Institute of Theoretical Physics, Academia Sinica, Beijing 100080, China

  • We have investigated the yield and the spectrum of the K－ mesons in the heavy-ion collisions with the relativistic RBUU approach. It's found that the ratio of the yield of K+ to K－ depends on the size of the nuclear systems. One main reason is caused by the absorption effect of the K－ mesons in the nuclear medium. We have found that the mean-absorption path of the K－ mesons are different for light nuclear system and for the middle or heavy nuclear systems. The extent of the absorption of K－ mesons is different for different elementary production channels. It's one important reason to make the channel Bπ→K－X play an important role in the K－production, especially for light and middle systems.
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    [1] Cassing W, Bratkovskaya E L, Mosel U et al. Nuclear Physics, 1997, A 614:4152 LI G Q, KO C M, Nucl. Phys., 1997, A625:372 3 Waas T, Rho M, Weise W. Nucl. Phys., 1997, A617:449 4 LI QingFeng, LI ZhuXia. High Energy Phys. and Nucl. Phys., 1998, 22: 1 119(李庆峰,李祝霞,高能物理与核物理,1998,22:1119)5 Ritman J et al (FDPI Collaboration). Z. Phys., 1995, A352:355 6 Barth R et al (Kaos Collaboration). Phys. Rev. Lett., 1997, 78:4027 7 MAO GuangJun, LI ZhuXia. ZHUO YiZhong et al. Phys. Lett, 1996, B378:58 MAO GuangJun, LI ZhuXia, ZHUO YiZhong. Phys. Rev., 1996, C53:2933 9 MAO GuangJun, 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)10 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) 11 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) 12 MAO GuangJun, LI ZhuXia ZHUO YiZhong et al. Phys. Lett., 1994, B327: 183 13 Bertsch G F, Brown G E, Koch V et al. Nucl. Phys., 1988, A490:745 14 Dover C, Walker G. Phys. Reports, 1982, 89: 1

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LI QingFeng, LI ZhuXia and SUN XiuQuan. Influence of the K－ Mesons Absorption to Their Production in the Heavy-Ion Collisions[J]. Chinese Physics C, 2000, 24(1): 49-59.
LI QingFeng, LI ZhuXia and SUN XiuQuan. Influence of the K－ Mesons Absorption to Their Production in the Heavy-Ion Collisions[J]. Chinese Physics C, 2000, 24(1): 49-59. shu
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Received: 1998-11-09
Revised: 1900-01-01
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Influence of the K－ Mesons Absorption to Their Production in the Heavy-Ion Collisions

    Corresponding author: LI QingFeng,
  • China Institute of Atomic Energy, Beijing 102413, China2 Center of Nuclear Theory, National Laboratory of Heavylon Accelerator, Lanzhou 730000, China3 Physics Department, Northwest University, Xi'an 710069, China4 Institute of Theoretical Physics, Academia Sinica, Beijing 100080, China
  • Received Date: 1998-11-09
  • Accepted Date: 1900-01-01
  • Available Online: 2000-01-05

Abstract: We have investigated the yield and the spectrum of the K－ mesons in the heavy-ion collisions with the relativistic RBUU approach. It's found that the ratio of the yield of K+ to K－ depends on the size of the nuclear systems. One main reason is caused by the absorption effect of the K－ mesons in the nuclear medium. We have found that the mean-absorption path of the K－ mesons are different for light nuclear system and for the middle or heavy nuclear systems. The extent of the absorption of K－ mesons is different for different elementary production channels. It's one important reason to make the channel Bπ→K－X play an important role in the K－production, especially for light and middle systems.

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