Results 11 to 20 of about 208,309 (159)
Chiral Structure of Baryon and Scalar Tetraquark Currents
EPJ Web of Conferences, 2014 We investigate chiral properties of local fields of baryons consisting of three quarks with flavor SU(3) symmetry. We construct explicitly independent local threequark fields belonging to definite Lorentz and flavor representations.
Chen Hua-Xing +2 more
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Constraints on disconnected contributions in ππ scattering
Journal of High Energy Physics, 2019 The accuracy of the lattice QCD computation of hadron-hadron scattering at low isospin depends critically on the ability to compute correlation functions with fermionic disconnected Wick contractions.
N. Ripunjay Acharya +3 more
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Navigating collinear superspace
Journal of High Energy Physics, 2020 We introduce a new set of effective field theory rules for constructing Lagrangians with N $$ \mathcal{N} $$ = 1 supersymmetry in collinear superspace. In the standard superspace treatment, superfields are functions of the coordinates x μ θ α θ † α ⋅ $$ \
Timothy Cohen +3 more
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Microlocal Analysis of Some Isospectral Deformations [PDF]
, 1994 We study the microlocal structure of the examples of isospectral deformations of Riemannian manifolds given by D. DeTurck and C. Gordon in [DeT-G1]. The Schwartz kernel of the intertwining operators considered by them may be written as an oscillatory ...
Marhuenda, Francisco +2 more
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Low energy pion–$$\Lambda _b$$ Λb interaction
European Physical Journal C: Particles and Fields, 2020 The low energy pion–$$\Lambda _b$$ Λb interaction is study in this work, considering effective chiral Lagrangians that include pions, baryons and the corresponding resonances.
M. G. L. Nogueira-Santos, C. C. Barros
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Two-meson form factors in unitarized chiral perturbation theory
Journal of High Energy Physics, 2021 We present a comprehensive analysis of form factors for two light pseudoscalar mesons induced by scalar, vector, and tensor quark operators. The theoretical framework is based on a combination of unitarized chiral perturbation theory and dispersion ...
Yu-Ji Shi +5 more
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Precision calculation of the axion-nucleon coupling in chiral perturbation theory
Journal of High Energy Physics, 2020 We derive the axion-nucleon interaction Lagrangian in heavy baryon chiral perturbation theory up to next-to-next-to-leading order. The effective axion-nucleon coupling is calculated to a few percent accuracy.
Thomas Vonk +2 more
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Spontaneous symmetry breaking and Nambu–Goldstone bosons in quantum many-body systems [PDF]
, 2010 Spontaneous symmetry breaking is a general principle that constitutes the underlying concept of a vast number of physical phenomena ranging from ferromagnetism and superconductivity in condensed matter physics to the Higgs mechanism in the standard model
Brauner, Tomáš, Brauner
core +1 more source
Two-current correlations in the pion on the lattice
Journal of High Energy Physics, 2018 We perform a systematic study of the correlation functions of two quark currents in a pion using lattice QCD. We obtain good signals for all but one of the relevant Wick contractions of quark fields.
Gunnar S. Bali +8 more
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On the amplitudes for the CP-conserving K ±(K S ) → π ±(π 0)ℓ + ℓ − rare decay modes
Journal of High Energy Physics, 2019 The amplitudes for the rare decay modes K ± → π ± ℓ + ℓ − and K S → π 0 ℓ +ℓ− are studied with the aim of obtaining predictions for them, such as to enable the possibility to search for violations of lepton-flavour universality in the kaon sector.
Giancarlo D’Ambrosio +2 more
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