期刊
EUROPEAN PHYSICAL JOURNAL A
卷 48, 期 8, 页码 -出版社
SPRINGER
DOI: 10.1140/epja/i2012-12114-6
关键词
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资金
- DGICYT [FIS2006-03438]
- Generalitat Valenciana in the program Prometeo
- EU Integrated Infrastructure Initiative Hadron Physics3 Project [283286]
- DFG [SFB/TR 16]
- COSY FFE [41821485 (COSY 106)]
- Sino-German CRC [110]
- Shota Rustaveli National Science Foundation [DI/13/02-100/11]
Phase shifts and resonance parameters can be obtained from finite-volume lattice spectra for interacting pairs of particles, moving with non-zero total momentum. We present a simple derivation of the method that is subsequently applied to obtain the pi pi and pi K phase shifts in the sectors with total isospin I - 0 and I - 1/2, respectively. Considering different total momenta, one obtains extra data points for a given volume that allow for a very efficient extraction of the resonance parameters in the infinite-volume limit. Corrections due to the mixing of partial waves are provided. We expect that our results will help to optimize the strategies in lattice simulations, which aim at an accurate determination of the scattering and resonance properties.
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