I = 2 pion scattering length and phase shift with Wilson fermions
نویسندگان
چکیده
منابع مشابه
I = 2 Pion Scattering Length with Wilson Fermions ∗
Lattice calculations of scattering lengths of the two-pion system is an important step for understanding of strong interactions beyond the hadron mass spectrum. For the I = 0 process, which is difficult due to the presence of disconnected contributions, only one group carried out the calculation [1]. For the I = 2 process, on the other hand, a number of calculations has been carried out with th...
متن کاملIÄ2 pion scattering phase shift with Wilson fermions
~CP-PACS Collaboration! Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan Institute for Cosmic Ray Research, University of Tokyo, Tanashi, Tokyo 188-8502, Japan High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan Center for Computational Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan Department of Physics, Hiroshima...
متن کاملI=2 pion scattering amplitude with Wilson fermions.
We present an exploratory calculation of the I = 2 scattering amplitude at threshold using Wilson fermions in the quenched approximation, including all the required contractions. We nd good agreement with the predictions of chiral perturbation theory even for pions of mass 560-700 MeV. Within the 10% errors, we do not see the onset of the bad chiral behavior expected for Wilson fermions. We als...
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We present a lattice QCD calculation of the scattering phase shift for the I = 2 S-wave two-pion system using the finite size method proposed by Lüscher. We work in the quenched approximation employing the standard plaquette action at β = 5.9 for gluons and the Wilson fermion action for quarks. The phase shift is extracted from the energy eigenvalues of the two-pion system, which are obtained b...
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We present results of phase shift for I = 2 S-wave ππ system with the Wilson fermions in the quenched approximation. The finite size method proposed by Lüscher is employed, and calculations are carried out at
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2002
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(01)01672-3