Scalar meson spectroscopy with a fine lattice

  • With sufficiently light u and d quarks the isovector (a0) and isosinglet (f0) scalar meson propagators are dominated at large distances by two-meson states. In the staggered fermion formulation of lattice QCD, taste-symmetry breaking causes a proliferation of multihadron states that complicates the analysis of these channels. Of special interest is the bubble contribution, which makes a considerable contribution to these channels. Using numerical simulation we have measured the correlators for both a0 and f0 channels in the “Asqtad” improved staggered fermion formulation in a MILC fine (a=0.09 fm) lattice ensemble. We analyze those correlators using rooted staggered chiral perturbation theory (rSχPT) and achieve chiral couplings that are well consistent with previous determinations.
      PCAS:
  • 加载中
  • [1] Bernard C, Golterman M, Shamir Y. Phys. Rev. D, 2006, 73: 1145112 Bernard C. Phys. Rev. D, 2006, 73: 1145033 Shamir Y. Phys. Rev. D, 2007, 75: 0545034 Stephen R. Sharpe. PoS, LAT2006, 2006. 0225 Bernard C, Golterman M, Shamir Y. PoS, LAT2006. 2007. 2056 Durr S, Hoelbling C. Phys. Rev. D, 2004, 69: 0345037 Follana E, Hart A, Davies C T H. Phys. Rev. Lett., 2004, 93: 2416018 Follana E, Hart A, Davies C T H, Mason Q. Phys. Rev. D, 2005, 72: 0545019 Durr S, Hoelbling C, Wenger U. Phys. Rev. D, 2004, 70: 09450210 Durr S, Hoelbling C. Phys. Rev. D, 2005, 71: 05450111 Bernard C et al. PoS, LAT2005. 2006. 11412 Bernard C et al. PoS, LAT2006, 2007. 16313 Aubin C, Bernard C. Phys. Rev. D, 2003, 68: 03401414 Aubin C, Bernard C. Phys. Rev. D, 2003, 68: 07401115 Aubin C et al. Phys. Rev. D, 2004, 70: 11450116 Billeter B, DeTar C, Osborn J. Phys. Rev. D, 2004, 70: 07750217 Aubin C et al. Phys. Rev. D, 2004, 70: 09450518 Prelovsek S. PoS, LAT2005, 2006. 08519 Prelovsek S. Phys. Rev. D, 2006, 73: 01450620 FU Zi-Wen. Hybrid Meson Decay from the Lattice. UMI-32-34073, 200621 Bernard C. Phys. Rev. D, 2007, 76: 09450422 Aubin C, Bernard C. Nucl. Phys. Proc. Suppl., 2004, 129: 18223 Bernard C W et al. Phys. Rev. D, 2001, 64: 05450624 Damgaard P H, Splittor K. Phys. Rev. D, 2000, 62: 05450925 DONG Shao-Jing, LIU Ke-Fei. Phys. Lett. B, 1994, 328: 13026 Bazavov A et al. Rev. Mod. Phys., 2010, 82: 1349
  • 加载中

Get Citation
FU Zi-Wen and Carleton DeTar. Scalar meson spectroscopy with a fine lattice[J]. Chinese Physics C, 2011, 35(10): 896-901. doi: 10.1088/1674-1137/35/10/002
FU Zi-Wen and Carleton DeTar. Scalar meson spectroscopy with a fine lattice[J]. Chinese Physics C, 2011, 35(10): 896-901.  doi: 10.1088/1674-1137/35/10/002 shu
Milestone
Received: 2010-12-08
Revised: 2011-01-06
Article Metric

Article Views(1391)
PDF Downloads(463)
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:

Scalar meson spectroscopy with a fine lattice

Abstract: With sufficiently light u and d quarks the isovector (a0) and isosinglet (f0) scalar meson propagators are dominated at large distances by two-meson states. In the staggered fermion formulation of lattice QCD, taste-symmetry breaking causes a proliferation of multihadron states that complicates the analysis of these channels. Of special interest is the bubble contribution, which makes a considerable contribution to these channels. Using numerical simulation we have measured the correlators for both a0 and f0 channels in the “Asqtad” improved staggered fermion formulation in a MILC fine (a=0.09 fm) lattice ensemble. We analyze those correlators using rooted staggered chiral perturbation theory (rSχPT) and achieve chiral couplings that are well consistent with previous determinations.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return