Bali, Gunnar S. and Collins, Sara and Cox, Antonio and Donald, Gordon and Goeckeler, Meinulf and Lang, C. B. and Schaefer, Andreas (2016) rho and K* resonances on the lattice at nearly physical quark masses and N-f=2. PHYSICAL REVIEW D, 93 (5): 054509. ISSN 2470-0010, 2470-0029
Full text not available from this repository.Abstract
Working with a pion mass m(pi) approximate to 150 MeV, we study pi pi and K-pi scattering using two flavors of nonperturbatively improved Wilson fermions at a lattice spacing a approximate to 0.071 fm. Employing two lattice volumes with linear spatial extents of N-s = 48 and N-s = 64 points and moving frames, we extract the phase shifts for p-wave pi pi and K pi scattering near the rho and K* resonances. Comparing our results to those of previous lattice studies, that used pion masses ranging from about 200 MeV up to 470 MeV, we find that the coupling g(rho pi pi) appears to be remarkably constant as a function of m(pi).
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QUANTUM-FIELD THEORIES; GAUGE-THEORY; SCATTERING MATRIX; QCD; STATES; MESONS; DECAY; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Gunnar Bali |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Mar 2019 08:40 |
| Last Modified: | 28 Mar 2019 08:40 |
| URI: | https://pred.uni-regensburg.de/id/eprint/3230 |
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