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《中国物理C》(英文)编辑部
2024年10月30日

Dead Cone Effect of Charm Quark Radiation

  • Radiative energy loss rate of heavy quark traversing through thermal dense matter which is formed in heavy ion collisions has been studied under an assumption of valid factorized method, in which light quark radiative spectrum is used to multiply an dead-cone factor depending on quark mass and energy. The numerical calculated results with energies at RHIC and LHC show that the heavy quark radiation spectra, obtained by extending light quark energy spectrum, are approximately consistent with that calculated under pQCD frame by Djordjecvic-Guulassy. The calculation is simplified by using of factorial dead cone factor and equivalent results can be obtained.
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  • [1] . Biro T S, Müller B, WANG X N. Phys. Lett., 1992, B283:171|1732. Gyulassy M, WANG X N. Nucl. Phys., 1994, B420: 583|6143. WANG X N, Gyulassy M, Plümer M. Phys. Rev., 1995,D51: 3436|34464. Baier R, Dokshitzer Y L, Mueller A H et al. Phys. Lett.,1995, B345: 277|2865. Miklos G, Levai P, Vitev I. Phys. Rev. Lett., 2000, 85:5535|55386. XIANG W C, DING H T, ZHOU D C. Chin. Phys. Lett.,2005, 22: 727. Wiedemann U A, Gyulassy M. Nucl. Phys., 1999, B560:345|3828. WANG E K, WANG X N. Phys. Rev. Lett., 2001, 87:142301(1?)9. ZHANG B W, WANG E K, WANG X N. Phys. Rev. Lett.,2004, 93: 072301(1?)10. XIANG W C, DING H T, ZHOU D C et al. Eur. Phys. J.,2005, A25: 7511. LIU J, MAO Y X, XIANG W C et al. Chinese ScienceBulletin., 2006, 51: 13912. Dokshitzer Y L, Khose V A, Troian S I. J. Phys., 1991,G17: 148113. AcherstaffK et al(PAL Collaboration). Eur. Phys. J., 1999,C7: 369. arXiv:hep/980700414. Bushulic D et al(ALEPH Collaboration). Z. Phys., 1994,C62: 115. Abbiendi G et al(OPAL Collaboration). Arxiv:hep-ex/021003116. Schumm B A, Dokshitzer Y L, Khose V A et al. Phys. Rev.Lett., 1992, 69: 302517. Gieseke S, Stephens P, Webber B. Arxiv:hep-ph/031008318. Wiedemann U A. Nucl. Phys., 2001, A690: 731. arxiv:hep-ph/000824119. Baier R, Dokshitzer Y L, Mueller A H et al. Phys. Rev.,1999, C60: 064902. arXiv:hep-ph/990726720. Baier R, Dokshitzer Y L, Mueller A H et al. Phys. Rev.,2001, C64: 057902. arXiv:hep-ph/010506221. Salgado C A, Wiedemann U A. Phys. Rev., 2003, D69:014008. arXiv:hep-ph/030218422. Dokshitzer Y L, Kharzeev D E. Phys. Lett., 2001, B519:100. arXiv:hep-ph/010620223. Djordjevic M, Gyulassy M. arXiv:Nucl-th/031007624. Armesto N, Salgaldo C A, Wiedemann U A. Phys. Rev.,2004, D69: 114003, 1|1625. Gyulassy M, Levai P, Vitev I. Nucl. Phys., 2001, B594:37126. Djordjevic M, Gyulassy M. Phys. Rev., 2003, C68: 034914
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Get Citation
ZHANG Xiao-Ming, ZHU Yan, HE Yun-Chun and ZHOU Dai-Cui. Dead Cone Effect of Charm Quark Radiation[J]. Chinese Physics C, 2007, 31(1): 43-47.
ZHANG Xiao-Ming, ZHU Yan, HE Yun-Chun and ZHOU Dai-Cui. Dead Cone Effect of Charm Quark Radiation[J]. Chinese Physics C, 2007, 31(1): 43-47. shu
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Received: 2006-04-20
Revised: 2006-07-30
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Dead Cone Effect of Charm Quark Radiation

    Corresponding author: ZHOU Dai-Cui,
  • Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

Abstract: Radiative energy loss rate of heavy quark traversing through thermal dense matter which is formed in heavy ion collisions has been studied under an assumption of valid factorized method, in which light quark radiative spectrum is used to multiply an dead-cone factor depending on quark mass and energy. The numerical calculated results with energies at RHIC and LHC show that the heavy quark radiation spectra, obtained by extending light quark energy spectrum, are approximately consistent with that calculated under pQCD frame by Djordjecvic-Guulassy. The calculation is simplified by using of factorial dead cone factor and equivalent results can be obtained.

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