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Weak-Transition Matrix Elements from Finite-Volume Correlation Functions / Lellouch, L P ; Lüscher, Martin
The two-body decay rate of a weakly decaying particle (such as the kaon) is shown to be proportional to the square of a well-defined transition matrix element in finite volume. Contrary to the physical amplitude, the latter can be extracted from finite-volume correlation functions in euclidean space without analytic continuation. [...]
hep-lat/0003023; CERN-TH-2000-091; CPT-3984; LAPP-TH-788.- Geneva : CERN, 2001 - 19 p. - Published in : Commun. Math. Phys. 219 (2001) 31-44 Access to fulltext document: PDF; External link: hep-lat/0003023 PDF - CERN library copies

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