Light hadron spectroscopy using domain wall valence quarks on an asqtad sea
Light hadron spectroscopy using domain wall valence quarks on an asqtad sea
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DOI：
10.1103/physrevd.79.054502
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发表时间：
2008-06
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通讯作者：
A. Walker-Loud;Huey-Wen Lin;D. Richards;R. Edwards;M. Engelhardt;G. Fleming;P. Hägler;B. Musch;M. Lin;H. Meyer;J. Negele;A. Pochinsky;M. Procura;S. Syritsyn;C. Morningstar;K. Orginos;D. Renner;W. Schroers
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作者：
A. Walker-Loud;Huey-Wen Lin;D. Richards;R. Edwards;M. Engelhardt;G. Fleming;P. Hägler;B. Musch;M. Lin;H. Meyer;J. Negele;A. Pochinsky;M. Procura;S. Syritsyn;C. Morningstar;K. Orginos;D. Renner;W. Schroers
本文用三味Asqtad海夸克和畴壁价夸克计算了全QCD中的轻强子谱。在空间尺寸为$$L\simeq 2.5$$~fm，晶格间距为$$a \simeq 0.124$$~fm的晶格上，对质量为$$m_\pi \sim 300$$~MeV的介子质量、介子和重子质量进行了计算.用连续谱和混合作用量重子手征微扰理论研究了两味和三味重子质量外推到物理π介子质量的问题。手征微扰理论与这些外推的成功和局限性进行了讨论。
We present a calculation of the light-hadron spectrum in full QCD using three-flavor Asqtad sea quarks and domain wall valence quarks. Calculations of meson masses, meson and baryon masses are performed on a lattice of spatial size $$L\simeq 2.5$$~fm, and a lattice spacing of $$a \simeq 0.124$$~fm, for pion masses as light as $$m_\pi \sim 300$$~MeV. Extrapolation of baryon masses to the physical pion mass is studied using continuum and mixed action heavy baryon chiral perturbation theory for two and three flavors. The success and limitations of chiral perturbation theory with these extrapolations is discussed.