Alpha-alpha scattering in the Multiverse
Sign Up to like & getrecommendations! Published in 2022 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2022)001
Abstract: Abstract We investigate the phase shifts of low-energy α-α scattering under variations of the fundamental parameters of the Standard Model, namely the light quark mass, the electromagnetic fine-structure constant as well as the QCD θ-angle.… read more here.
Keywords: pion mass; wave phase; phase shifts; phase ... See more keywords
The pion mass and decay constant at three loops in two-flavour chiral perturbation theory
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep11(2017)181
Abstract: A bstractA calculation of the pion mass and decay constant at NNNLO in two-flavour chiral perturbation theory is presented. The results are cross-checked by using both the exponential and square root parametrizations of the Goldstone… read more here.
Keywords: flavour chiral; decay constant; two flavour; mass ... See more keywords
Distribution Amplitudes of K^{*} and ϕ at the Physical Pion Mass from Lattice QCD.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review letters"
DOI: 10.1103/physrevlett.127.062002
Abstract: We present the first lattice QCD calculation of the distribution amplitudes of longitudinally and transversely polarized vector mesons K^{*} and ϕ using large momentum effective theory. We use the clover fermion action on three ensembles… read more here.
Keywords: lattice; pion mass; physical pion; lattice qcd ... See more keywords
Lattice QCD Calculation of the Pion Mass Splitting.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.128.052003
Abstract: We use the infinite volume reconstruction method to calculate the charged and neutral pion mass difference. The hadronic tensor is calculated using lattice QCD and then combined with an analytic photon propagator, and the mass… read more here.
Keywords: calculation; pion mass; mass; mass splitting ... See more keywords