Relativistic Quark Model and the N-Δ Mass Splitting

  • In the constituent quark model, light baryons are considered as the systems of the constituent quarks with confining interaction and with a chiral interaction mediated by Goldstone bosons. Here the masses of the N and Δ and their splitting are investigated based on a relativistic quark model approach with inclusion of pion meson cloud. Pseudoscalar π-quark interaction is employed to study the coupling between the mucleon and the π. The results show the contributions of the one-gluon-exchange potential and of the pion meson cloud to the N-Δ mass splitting. Moreover, our numerical analyses indicate a difference between the relativistic and the nonrelativistic treatments.
  • 加载中
  • [1] Close F E, Li Z P . Phys. Rev., 1990, D42: 2194; Capstick S. Phys. Rev., 1992, D46: 19652 Capstick S, Keiter B D. Phys. Rev., 1995, D51: 3598; Cardarelli F, Pace E, Salme G et al. Phys. Lett., 1997, B397: 13; Cano F, Gonzalez P. Phys. Lett., 1998, B431: 270; Sanctis De M, Santopinto E, Giannini M M. Eur. Phys. J., 1998, A1: 1873 Thomas A W, Klein G. Phys. Lett., 1999, B456: 54 Peierls R E, Yoccoz J. Proc. Phys. Soc., 1957, 70: 381: Tegen R, Brockmann R, Weise W. Z. Phys., 1982, A307: 3395 Peierls R E, Thouless D J. Nucl. Phys., 1962, 38: 154; Lu D H, Thomas A W, Williams A G. Phys. Rev., 1997, C55: 31086 The berge S, Thomas A W. Nucl. Phys., 1980, A393: 2527 Weise W. Quark and Nuclei. Singapore: World Scientific Publishing Co. Pre. Ltd, 1985. 252 8 Ericson T, Weise W. Pion and Nuclei. London: Oxford Science Publications, 1988. 5839 Riska D O, Brown G E. Nucl. Phys., 2001, A679: 57710 Buchmann A J. Exchange Current in Baryons. Z. Naturforsch, 1997, 52a: 87711 Glozman L Y. hep-th/980534512 Dong Y B, Shimizu K, Faessler A. Eur. Phys. J., 1999, A6: 203; Phys. Rev., 1999, C60: 035203
  • 加载中

Get Citation
FENG Qing-Guo and DONG Yu-Bing. Relativistic Quark Model and the N-Δ Mass Splitting[J]. Chinese Physics C, 2002, 26(1): 21-27.
FENG Qing-Guo and DONG Yu-Bing. Relativistic Quark Model and the N-Δ Mass Splitting[J]. Chinese Physics C, 2002, 26(1): 21-27. shu
Milestone
Received: 2001-01-15
Revised: 1900-01-01
Article Metric

Article Views(2846)
PDF Downloads(653)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Relativistic Quark Model and the N-Δ Mass Splitting

    Corresponding author: FENG Qing-Guo,
  • Institute of High Energy Physics, CAS, Beijing 100039, China

Abstract: In the constituent quark model, light baryons are considered as the systems of the constituent quarks with confining interaction and with a chiral interaction mediated by Goldstone bosons. Here the masses of the N and Δ and their splitting are investigated based on a relativistic quark model approach with inclusion of pion meson cloud. Pseudoscalar π-quark interaction is employed to study the coupling between the mucleon and the π. The results show the contributions of the one-gluon-exchange potential and of the pion meson cloud to the N-Δ mass splitting. Moreover, our numerical analyses indicate a difference between the relativistic and the nonrelativistic treatments.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return