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2 Pion Scattering Length with Wilson Fermions
| Content Provider | Semantic Scholar |
|---|---|
| Author | Aoki, Sinya Fukugita, Masataka Hashimoto, Shoji Ishikawa, -I. Ishizuka, Naruhito Iwasaki, Yoshitaka Kanaya, Kazuyuki Kaneda, T. Kaya, Songül Kuramashi, Y. Okawa, Masanori Onogi, Tetsuya Tominaga, Shogo Tsutsui, Naoto Ukawa, Akira Yamada, Norikazu Yoshie, Tadamasa |
| Copyright Year | 1999 |
| Abstract | 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 the Staggered [1,2] and the Wilson fermions [1,3]. These calculations reported results in agreement with the prediction of current algebra or lowest-order chiral perturbation theory(CHPT) [4]. It is known, however, that this prediction differs from the experimental value over 1.4σ, and that the higher order effects of CHPT are small [5]. The past lattice calculations were made on coarse lattices with small sizes, and the continuum extrapolation was not taken. In this article we report on our high statistics calculation of the I = 2 pion scattering length aiming to improve on these points. This work is carried out in quenched lattice QCD employing the standard plaquette action for gluons with the Wilson |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://cds.cern.ch/record/408938/files/9911025.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Extrapolation Interaction Lattice QCD Mass Spectrometry Perturbation theory Pin grid array Scattering length Triune continuum paradigm |
| Content Type | Text |
| Resource Type | Article |
