Generation of isospin sum rules in heavy hadron weak decays
Journal of High Energy Physics, 2023 Isospin symmetry is the most precise flavor symmetry. In this work, we propose an approach to generate isospin sum rules for heavy hadron decays without the Wigner-Eckhart invariants. The effective Hamiltonian of heavy quark weak decay is fully invariant
Di Wang
doaj +1 more source
Hidden Spin-Isospin Exchange Symmetry [PDF]
Physical Review Letters, 2021 The strong interactions among nucleons have an approximate spin-isospin exchange symmetry that arises from the properties of quantum chromodynamics in the limit of many colors, $N_c$. However this large-$N_c$ symmetry is well hidden and reveals itself only when averaging over intrinsic spin orientations. Furthermore, the symmetry is obscured unless the
Dean Lee +10 more
openaire +5 more sources
Electromagnetic and strong isospin-breaking corrections to the muon g−2 from lattice QCD+QED [PDF]
Physical Review D, 2019 We present a lattice calculation of the leading-order electromagnetic and strong isospin-breaking corrections to the hadronic vacuum polarization (HVP) contribution to the anomalous magnetic moment of the muon.
D. Giusti +4 more
semanticscholar +1 more source
Scattering of two and three physical pions at maximal isospin from lattice QCD [PDF]
The European Physical Journal C, 2020 We present the first direct Nf=2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin ...
M. Fischer +5 more
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On the importance of NNLO QCD and isospin-breaking corrections in $$\varepsilon '/\varepsilon $$ [PDF]
The European Physical Journal C, 2019 Following the 1999 analysis of Gambino, Haisch and one of us, we stress that all the recent NLO analyses of $$\varepsilon '/\varepsilon $$ε′/ε in the Standard Model (SM) suffer from the renormalization scheme dependence present in the electroweak penguin
Jason Aebischer, C. Bobeth, A. Buras
semanticscholar +1 more source
Electromagnetic and strong isospin breaking in light meson masses
Physics Letters B, 2022 We study electromagnetic as well as strong isospin breaking effects in the isospin mass splittings of light pseudoscalar and vector mesons. To this end we employ a coupled system of quark Dyson-Schwinger and meson Bethe-Salpeter equations whose ...
Ángel S. Miramontes +3 more
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Low Density Neutron Star Matter with Quantum Molecular Dynamics: The Role of Isovector Interactions
Universe, 2022 The effect of isospin-dependent nuclear forces on the inner crust of neutron stars is modeled within the framework of Quantum Molecular Dynamics (QMD).
Parit Mehta +4 more
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Isospin-symmetry breaking in superallowed Fermi β-decay due to isospin-nonconserving forces
Physics Letters B, 2017 We investigate isospin-symmetry breaking effects in the sd-shell region with large-scale shell-model calculations, aiming to understand the recent anomalies observed in superallowed Fermi β-decay.
K. Kaneko +4 more
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Isospin breaking decays as a diagnosis of the hadronic molecular structure of the Pc(4457) [PDF]
Physical Review D, 2019 The LHCb Collaboration announced the observation of three narrow structures consistent with hidden-charm pentaquark states. They are candidates of hadronic molecules formed of a pair of a charmed baryon and an anticharmed meson.
F. Guo +3 more
semanticscholar +1 more source
Finite-density massless two-color QCD at the isospin Roberge-Weiss point and the 't Hooft anomaly
Physical Review Research, 2020 We study the phase diagram of two-flavor massless two-color QCD (QC_{2}D) under the presence of quark chemical potentials and imaginary isospin chemical potentials.
Takuya Furusawa +2 more
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