Strange magnetic moments of octet baryons under SU(3) breaking

  • Magnetic moments of octet baryons are parameterized to all orders of the flavor SU(3) breaking with the irreducible tensor technique in order to extract the contribution of each flavor quark to the magnetic moments of the octet baryons. The not-yet measured magnetic moment of ∑0 is predicted to be 0.649μN. Our parameterized forms for the magnetic moments are explicitly flavor-dependent, and hence each flavor component of the magnetic moments can be evaluated directly via the flavor projection operator. It is found that the strange magnetic moment of the nucleon is suppressed due to the small isoscalar anomalous magnetic moment of the nucleon. In particular, the strange magnetic form factor of the nucleon turns out to be positive, GNs(0)=0.428μN, which is consistent with recent data.
      PCAS:
  • 加载中
  • [1] Spayde D T et al. (SAMPLE collaboration). Phys. Lett. B,2004, 79: 5832 Acha A et al. (HAPPEX collaboration). Phys. Rev. Lett.,2007, 98: 0323013 Young R D et al. Phys. Rev. Lett., 2006, 97: 1020024 Leinweber D B et al. Phys. Rev. Lett., 2005, 94: 2120015 Lewis R et al. Phys. Rev. D, 2003, 67: 0130036 DONG S J et al. Phys. Rev. D, 1998, 58: 0745047 Lee F X. Phys. Lett. B, 1998, 419: 14; Phys. Rev. D, 1998,57: 18018 Leiweber D B. Phys. Rev. D, 1996, 53: 5159 Forkel H. Phys. Rev. C, 1997, 56: 51010 Hammer H W et al. Phys. Lett. B, 1996, 367: 32311 Ja e R L. Phys. Lett. B, 1989, 229: 27512 Hannelius L, Riska D O. Phys. Rev. C, 2000, 62: 04520413 Hannelius L, Riska D O, Glozman L Y. Nucl. Phys. A,2000, 665: 35314 Lyubovitskij V E et al. Phys. Rev. C, 2002, 66: 05520415 Cohen T D et al. Phys. Lett. B, 1993, 316: 116 Park N W, Weigel H. Nucl. Phys. A, 1992, 541: 453; Park N W et al. Phys. Rev. D, 1991, 43: 86917 HONG S T. Phys. Rev. D, 2007, 76: 094029; HONG S T et al. Phys. Lett. B, 1997, 414: 229; HONG S T, Park B Y. Nucl. Phys. A, 1993, 561: 52518 Weigel H et al. Phys. Lett. B, 1995, 353: 2019 Silva A et al. Phys. Rev. D, 2001, 65: 014016; Nucl. Phys. A, 2003, 721: 417; Nucl. Phys. E, 2002, 66: 0399029; Eur. Phys. J. A, 2004, 22: 48120 Kim H C et al. Phys. Rev. D, 1998, 58: 11402721 Meissner U G et al. Phys. Lett. B, 1997, 408: 38122 ZOU B S, Riska D O. Phys. Rev. Lett., 2005, 95: 072001; Riska D O, ZOU B S. Phys. Lett. B, 2006, 36: 26523 Jido D, Weise W. Phys. Rev. C, 2005, 72: 04520324 LEE T D. Particle Physics and Introduction to Field The- ory. New York:Harwood Academic Publishers, 1981. 207-22425 MA Z Q. Group Theory in Physics. Beijing: Science Press,1998. 485-50226 Oh Y, Kim H. Phys. Rev. D, 2004, 70: 09402227 de Swart J J. Phys. Mod. Phys., 1963, 35: 916; 1965, 37:326(E)
  • 加载中

Get Citation
CAO Lu, WANG Biao and CHEN Hong. Strange magnetic moments of octet baryons under SU(3) breaking[J]. Chinese Physics C, 2012, 36(5): 390-394. doi: 10.1088/1674-1137/36/5/002
CAO Lu, WANG Biao and CHEN Hong. Strange magnetic moments of octet baryons under SU(3) breaking[J]. Chinese Physics C, 2012, 36(5): 390-394.  doi: 10.1088/1674-1137/36/5/002 shu
Milestone
Received: 2011-07-21
Revised: 2011-08-31
Article Metric

Article Views(1491)
PDF Downloads(304)
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:

Strange magnetic moments of octet baryons under SU(3) breaking

Abstract: Magnetic moments of octet baryons are parameterized to all orders of the flavor SU(3) breaking with the irreducible tensor technique in order to extract the contribution of each flavor quark to the magnetic moments of the octet baryons. The not-yet measured magnetic moment of ∑0 is predicted to be 0.649μN. Our parameterized forms for the magnetic moments are explicitly flavor-dependent, and hence each flavor component of the magnetic moments can be evaluated directly via the flavor projection operator. It is found that the strange magnetic moment of the nucleon is suppressed due to the small isoscalar anomalous magnetic moment of the nucleon. In particular, the strange magnetic form factor of the nucleon turns out to be positive, GNs(0)=0.428μN, which is consistent with recent data.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return