19–21 Dec 2022
Dipartimento di Fisica - Università di Bari "Aldo Moro"
Europe/Rome timezone
SM&FT 2022 Frontiers in Computational Physics

From smeared spectral functions to the lattice calculation of inclusive semileptonic decays

20 Dec 2022, 18:35
20m
Dipartimento di Fisica - Università di Bari "Aldo Moro" - aula B - 1st floor

Dipartimento di Fisica - Università di Bari "Aldo Moro" - aula B - 1st floor

Speaker

Mr Antonio Smecca (Università di Torino & INFN)

Description

Hadronic spectral functions are important objects as they can be used to calculate several phenomenologically relevant quantities. However, in order to extract these quantities from Euclidean correlation functions it is necessary to solve an ill-posed inverse problem of the Laplace type.
In this talk we discuss one of the recently proposed method for the extraction of spectral densities based on the Backus-Gilbert algorithm.
Furthermore, we show one of the many possible application of the method which is the lattice calculation of inclusive semileptonic decays of heavy mesons.

Primary authors

Mr Antonio Smecca (Università di Torino & INFN) Dr Francesco Sanfilippo (INFN Roma Tre) Prof. Marco Panero (Università di Torino & INFN) Prof. Nazario Tantalo (Università di Roma "Tor Vergata" & INFN) Mr Sandro Mächler (Università di Torino & University of Zurich) Prof. Shoji Hashimoto (KEK, SOKENDAI) Dr Silvano Simula (INFN Roma Tre) Prof. Paolo Gambino (Università di Torino & INFN)

Presentation materials