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Total decay and transition rates from LQCD
EPJ Web of Conferences
We present a new technique for extracting total transition rates into final states with any number of hadrons from lattice QCD. The method involves constructing a finite-volume Euclidean four-point function whose corresponding infinite-volume spectral function gives access to the decay and transition rates into all allowed final states. The inverse problem of calculating the spectral function is solved via the Backus-Gilbert method, which automatically includes a smoothing procedure. Thisdoi:10.1051/epjconf/201817513021 fatcat:3vkxdzmdingkbafrxt3filwj4a