Quenched light hadron spectrum and decay constants using improved Wilson fermion actions
نویسندگان
چکیده
منابع مشابه
Quenched Light Hadron Spectrum and Decay Constants using Improved Wilson Fermion Actions
where c = 1/u30, u0 = 〈 3Tr2〉, can be regarded as a step towards full O(a) improvement [2]. We compare the resulting light hadron quantities with those obtained using the tree-level coefficient, c = 1, for which discretisation errors are O(ga) in perturbation theory [3], and also with data from GF11 [4] corresponding to c = 0, at a range of β values, to seek indications of better scaling behavi...
متن کاملLight Quenched Hadron Spectrum and Decay Constants on different Lattices
In this paper we study O(2000) (quenched) lattice configurations from the APE collaboration, for different lattice volumes and for 6.0 ≤ β ≤ 6.4 using both the Wilson and the SW-Clover fermion actions. We determine the light hadronic spectrum and meson decay constants and study the mesonic dispersion relation. We extract the hadronic variable J and the strange quark mass in the continuum at the...
متن کاملQuenched Light Hadron Spectroscopy: Comparing the Wilson and O(a)-Improved Fermion Actions
We have studied the light hadron spectrum and decay constants for quenched QCD at β = 6.2 on a 24 × 48 lattice. We compare the results obtained using a nearest-neighbour O(a)-improved (“clover”) fermion action with those obtained using the standard Wilson fermion action on the same gauge configurations. For pseudoscalar meson masses in the range 330-800 MeV, we find no significant difference be...
متن کاملQuenched Hadrons using Wilson and O(a)-Improved Fermion Actions
We present the first study of the light hadron spectrum and decay constants for quenched QCD using an O(a)-improved nearest-neighbour Wilson fermion action at β = 6.2. We compare the results with those obtained using the standard Wilson fermion action, on the same set of 18 gauge field configurations of a 243×48 lattice. For pseudoscalar meson masses in the range 330-800 MeV, we find no signifi...
متن کاملScaling of Non-Perturbatively O(a) Improved Wilson Fermions: Hadron Spectrum, Quark Masses and Decay Constants
We compute the hadron mass spectrum, the quark masses and the meson decay constants in quenched lattice QCD with non-perturbatively O(a) improved Wilson fermions. The calculations are done for two values of the coupling constant, β = 6.0 and 6.2, and the results are compared with the predictions of ordinary Wilson fermions. We find that the improved action reduces lattice artifacts as expected.
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1997
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(96)00615-9