Search

Your search keyword '"Bernard, Véronique"' showing total 7 results
Start Over Author "Bernard, Véronique" Topic lattice qcd
7 results on '"Bernard, Véronique"'

5. Radiative decays of resonances on the lattice.

Author

Agadjanov, Andria, Bernard, Véronique, Meißner, Ulf-G., and Rusetsky, Akaki

Subjects
*RESONANCE, *LATTICE dynamics, *MATRICES (Mathematics), *PHASE transitions, *FORM factor (Nuclear physics)
Abstract

We discuss a generalization of the Lüscher approach to the calculation of the matrix elements of the unstable states. A theoretical framework for the lattice extraction of the ΔNγ* transition form factors is formulated. The procedure to measure the form factors at the resonance pole is given. The current theoretical progress on the B→K*γ* decays is briefly summarized. [ABSTRACT FROM AUTHOR]

Published
2016
Full Text
View/download PDF

6. Radiative decays of resonances on the lattice.

Author

Agadjanov, Andria, Bernard, Véronique, Meiβner, Ulf-G., and Rusetsky, Akaki

Subjects
*RADIOACTIVE decay, *LATTICE gauge theories, *QUANTUM states, *QUANTUM chromodynamics, *QUANTUM theory
Abstract

We discuss a generalization of the Lüscher approach to the calculation of the matrix elements of the unstable states. A theoretical framework for the lattice extraction of the ΔNγ ∗ transition form factors is formulated. The procedure to measure the form factors at the resonance pole is given. The current theoretical progress on the B→K∗γ ∗ decays is briefly summarized. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

7. The Δ-resonance in a finite volume

Author

Bernard, Véronique, Meißner, Ulf-G., and Rusetsky, Akaki

Subjects
*PARTICLES (Nuclear physics), *CONTINUUM mechanics, *SOCIAL psychology, *NUCLEAR magnetic resonance
Abstract

Abstract: We study the extraction of Δ-resonance parameters from lattice data for small quark masses, corresponding to the case of an unstable Δ. To this end, we calculate the spectrum of the correlator of two Δ-fields in a finite Euclidean box up-to-and-including in the small scale expansion using infrared regularization. On the basis of our numerical study, we argue that the extraction of the parameters of the Δ-resonance (in particular, of the mass and the pion–nucleon–delta coupling constant) from the measured volume dependence of the lowest energy levels should be feasible. [Copyright &y& Elsevier]

Published
2008
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results