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Journal Articles Journal of High Energy Physics Year : 2012

Matrix elements of unstable states

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D. Hoja
  • Function : Author
U.-G. Meissner
  • Function : Author
A. Rusetsky
  • Function : Author

Abstract

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.

Dates and versions

in2p3-00799046 , version 1 (11-03-2013)

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V. Bernard, D. Hoja, U.-G. Meissner, A. Rusetsky. Matrix elements of unstable states. Journal of High Energy Physics, 2012, 2012 (9), pp.023. ⟨10.1007/JHEP09(2012)023⟩. ⟨in2p3-00799046⟩

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