Matrix elements of unstable states

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• 作者：V. Bernard (1) bernard@ipno.in2p3.fr
  D. Hoja (2) hoja@hiskp.uni-bonn.de
  U.-G. Mei?ner (23) meissner@hiskp.uni-bonn.de
  A. Rusetsky (2) rusetsky@hiskp.uni-bonn.de
• 关键词：Keywords Lattice Quantum Field Theory – Lattice Gauge Field Theories
• 刊名：Journal of High Energy Physics
• 出版年：2012
• 出版时间：September 2012
• 年：2012
• 卷：2012
• 期：9
• 全文大小：634.0 KB
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• 作者单位：1. Institut de Physique Nucléaire, CNRS/Univ. Paris-Sud 11 (UMR 8608), F-91406 Orsay Cedex, France2. Helmholtz-Institut für Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Universit?t Bonn, Nussallee 14-16, D-53115 Bonn, Germany3. Forschungszentrum Jülich, Jülich Center for Hadron Physics, Institut für Kernphysik (IKP-3) and Institute for Advanced Simulation (IAS-4), D-52425 Jülich, Germany
• ISSN：1029-8479

文摘

Using the language of non-relativistic effective Lagrangians, we formulate a systematic framework for the calculation of resonance matrix elements in lattice QCD. The generalization of the Lüscher-Lellouch formula for these matrix elements is derived. We further discuss in detail the procedure of the analytic continuation of the resonance matrix elements into the complex energy plane and investigate the infinite-volume limit.