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《中国物理C》（英文）编辑部
2024年10月30日
Chinese Physics C> 2006, Vol. 30> Issue(6) : 542-547 

The N*(1710) contribution to the Θ+ production cross sections in p-p collisions

  •  School of Physics, Southwest University, Chongqing 400715, China2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China3 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, China

  • In this paper we derive the Θ production cross section in high energy proton-proton collisions in the relativistic framework through using effective hadronic couplings. Both the nucleon and N*(1710) propagations are taken into account in the intermediate states. The one π and one ρ exchange mechanisms are considered and the commonly accepted coupling constants and form factors are used in the calculation. We find that ρ exchange is dominant in these processes and the N*(1710) propagation in the intermediate state is important,which increases the Θ production cross section by a factor of a few tens at center of mass energy 4GeV.
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    [1] . Nakano T et al. Phys. Rev. Lett., 2003, 91: 0120022. ZHU S L. Int. J. Mod. Phys., 2004, A19: 34393. Lü Xiao-Rui, MAO Ya-Jun, MA Bo-Qiang. Acta Scientiarum Naturalium Universitatis Pekinensis(S.S.), 2003,39(Suppl.): 44—55(in Chinese)(吕晓睿,冒亚军,马伯强.北京大学学报(自然科学版),2003,39(增刊)44-55)4. Diakonov D, Petrov V, Poliakov M. Z. Phys., 1997, A359:3055. ZHU S L. Int. J. Mod. Phys., 2005, A20: 15486. Ken Hicks. An Experimental Review of the Θ+ Pentaquark,J. Phys., 2005, Conference series 9: 183—1917. Burkert V D. Have Pentaquark States Been Seen?arXiv:hep-ph/05103098. LIU W, KO C M. Phys. Rev., 2003, C68: 0452039. Tsushima K et al. Phys. Rev., 1999, C59: 369—38710. LIU B C, ZOU B S. Mass and K Coupling of N*(1535).arXiv: nucl-th/050306911. LI C H, KO C M. Nucl. Phys., 2002, A712: 110—13012. LIN Z W, KO C M, ZHANG B. Phys. Rev., 2000, C61:02490413. LIN Z, DI T G, KO C M. Nucl. Phys., 2001, A689: 965—97914. LIU W, KO C M. Phys. Lett., 2002, B533: 259—264; LIUW, KO C M, LIN Z. Phys. Rev., 2002, C65: 01520315. LIU W, Lee S H, KO C M. Nucl. Phys., 2003, A724: 375—39016. Particle Data Group. Phys. Lett., 2004, B592: 66—69

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LI Gui-Jun, CHEN Hong, ZOU Bing-Song, JIANG Huan-Qing and HUANG Shu-Yi. The N*(1710) contribution to the Θ+ production cross sections in p-p collisions[J]. Chinese Physics C, 2006, 30(6): 542-547.
LI Gui-Jun, CHEN Hong, ZOU Bing-Song, JIANG Huan-Qing and HUANG Shu-Yi. The N*(1710) contribution to the Θ+ production cross sections in p-p collisions[J]. Chinese Physics C, 2006, 30(6): 542-547. shu
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Received: 2005-12-04
Revised: 2005-12-21
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The N*(1710) contribution to the Θ+ production cross sections in p-p collisions

    Corresponding author: LI Gui-Jun,
  • School of Physics, Southwest University, Chongqing 400715, China2 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China3 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, China
  • Received Date: 2005-12-04
  • Accepted Date: 2005-12-21
  • Available Online: 2006-06-05

Abstract: In this paper we derive the Θ production cross section in high energy proton-proton collisions in the relativistic framework through using effective hadronic couplings. Both the nucleon and N*(1710) propagations are taken into account in the intermediate states. The one π and one ρ exchange mechanisms are considered and the commonly accepted coupling constants and form factors are used in the calculation. We find that ρ exchange is dominant in these processes and the N*(1710) propagation in the intermediate state is important,which increases the Θ production cross section by a factor of a few tens at center of mass energy 4GeV.

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