dc.creator | Wilson, David John | |
dc.creator | Dudek, Jozef J | |
dc.creator | Edwards, Robert G | |
dc.creator | Thomas, Christopher Edward | |
dc.date.accessioned | 2015-01-20 | |
dc.date.accessioned | 2018-11-24T23:18:00Z | |
dc.date.available | 2015-04-07T08:44:53Z | |
dc.date.available | 2018-11-24T23:18:00Z | |
dc.date.issued | 2015-03-10 | |
dc.identifier | https://www.repository.cam.ac.uk/handle/1810/247276 | |
dc.identifier.uri | http://repository.aust.edu.ng/xmlui/handle/123456789/3209 | |
dc.description.abstract | Coupled-channel πK and ηK scattering amplitudes are determined by studying the finite-volume energy spectra obtained from dynamical lattice QCD calculations. Using a large basis of interpolating operators, including both those resembling a qq¯ construction and those resembling a pair of mesons with relative momentum, a reliable excited-state spectrum can be obtained. Working at mπ = 391 MeV, we find a gradual increase in the JP = 0+ πK phase-shift which may be identified with a broad scalar resonance that couples strongly to πK and weakly to ηK. The low-energy behavior of this amplitude suggests a virtual bound-state that may be related to the κ resonance. A bound state with JP = 1− is found very close to the πK threshold energy, whose coupling to theπK channel is compatible with that of the experimental K *(892). Evidence is found for a narrow resonance in JP = 2+. Isospin–3/2 πK scattering is also studied and non-resonant phase-shifts spanning the whole elastic scattering region are obtained. | |
dc.language | en | |
dc.publisher | APS | |
dc.publisher | Physical Review D | |
dc.title | Resonances in coupled πK, ηK scattering from lattice QCD | |
dc.type | Article | |