Neutral kaon mixing beyond the Standard Model with nf = 2 + 1 chiral fermions. Part 2: non perturbative renormalisation of the ΔF = 2 four-quark operators
Sign Up to like & getrecommendations! Published in 2017 at "Journal of High Energy Physics"
DOI: 10.1007/jhep10(2017)054
Abstract: A bstractWe compute the renormalisation factors (Z-matrices) of the ΔF = 2 four-quark operators needed for Beyond the Standard Model (BSM) kaon mixing. We work with nf = 2+1 flavours of Domain-Wall fermions whose chiral-flavour… read more here.
Keywords: kaon mixing; beyond standard; standard model; quark operators ... See more keywords
Probing new physics in class-I B-meson decays into heavy-light final states
Sign Up to like & getrecommendations! Published in 2021 at "Journal of High Energy Physics"
DOI: 10.1007/jhep10(2021)235
Abstract: Abstract With updated experimental data and improved theoretical calculations, several significant deviations are being observed between the Standard Model predictions and the experimental measurements of the branching ratios of $$ {\overline{B}}_{(s)}^0\to {D}_{(s)}^{\left(\ast \right)+}{L}^{-} $$ B… read more here.
Keywords: meson decays; physics; new physics; four quark ... See more keywords
Four quark operators for kaon bag parameter with gradient flow
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.034508
Abstract: To study the $CP$-violation using the ${K}_{0}\ensuremath{-}{\overline{K}}_{0}$ oscillation, we need the kaon bag parameter which represents QCD corrections in the leading Feynman diagrams. The lattice QCD provides us with the only way to evaluate the… read more here.
Keywords: kaon bag; bag parameter; quark operators; gradient flow ... See more keywords