High Statistics Analysis using Anisotropic Clover Lattices: (I) Single Hadron Correlation Functions
We present the results of high-statistics calculations of correlation functions generated with single-baryon interpolating operators on an ensemble of dynamical anisotropic gauge-field configurations generated by the Hadron Spectrum Collaboration using a tadpole-improved clover fermion action and Symanzik-improved gauge action. A total of $$\Nprops$$ sets of measurements are made using $$\Ncfgs$$ gauge configurations of size $$20^3\times 128$$ with an anisotropy parameter $$\xi= b_s/b_t = 3.5$$, a spatial lattice spacing of $$b_s=0.1227\pm 0.0008~{\rm fm}$$, and pion mass of $$\mpi\sim 390~{\rm MeV}$$. Ground state baryons masses are extracted with fully quantified uncertainties that are at or below the $$\sim 0.2\%$$-level in lattice units. The lowest-lying negative-parity states are also extracted albeit with a somewhat lower level of precision. In the case of the nucleon, this negative-parity state is above the $$N\pi$$ threshold and, therefore, the isos
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-060R23177
- OSTI ID:
- 956323
- Report Number(s):
- JLAB-THY-09-960; arXiv:0903.2990; DOE/OR/23177-0656; PRVDAQ; TRN: US1005000
- Journal Information:
- Physical Review D, Journal Name: Physical Review D; ISSN 1550-7998
- Country of Publication:
- United States
- Language:
- English
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High Statistics Analysis using Anisotropic Clover Lattices: (I) Single Hadron Correlation Functions
High statistics analysis using anisotropic clover lattices: Single hadron correlation functions