Results 31 to 40 of about 651 (212)
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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The order p8 mesonic chiral Lagrangian [PDF]
Journal of High Energy Physics, 2019 Abstract We derive the chiral Lagrangian at next-to-next-to-next-to-leading order (NNNLO) for a general number N f of light quark flavours as well as for N f = 2, 3. We enumerate the contact terms separately.
Johan Bijnens +2 more
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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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Hadronic interactions from effective chiral Lagrangians of quarks and gluons [PDF]
, 1997 Effective chiral Lagrangians involving constituent quarks, Goldstone bosons and long-distance gluons are believed to describe the strong interactions in an intermediate energy region between the confinement scale and the chiral symmetry breaking scale ...
Krein, G.
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Massive Spinning Relativistic Particle: Revisited under BRST and Supervariable Approaches
Advances in High Energy Physics, 2020 We discuss the continuous and infinitesimal gauge, supergauge, reparameterization, nilpotent Becchi-Rouet-Stora-Tyutin (BRST), and anti-BRST symmetries and derive corresponding nilpotent charges for the one 0+1-dimensional (1D) massive model of a ...
A. Tripathi +3 more
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2, 12, 117, 1959, 45171, 1170086, …: a Hilbert series for the QCD chiral Lagrangian
Journal of High Energy Physics, 2021 We apply Hilbert series techniques to the enumeration of operators in the mesonic QCD chiral Lagrangian. Existing Hilbert series technologies for non-linear realizations are extended to incorporate the external fields. The action of charge conjugation is
Lukáš Gráf +4 more
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NNLO positivity bounds on chiral perturbation theory for a general number of flavours
Journal of High Energy Physics, 2022 We present positivity bounds, derived from the principles of analyticity, unitarity and crossing symmetry, that constrain the low-energy constants of chiral perturbation theory. Bounds are produced for 2, 3 or more flavours in meson-meson scattering with
Benjamin Alvarez +2 more
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Chiral Lagrangians, anomalies, supersymmetry, and holomorphy [PDF]
Nuclear Physics B, 1997 31 pp., Harvmac (b ...
Losev, Andrei +3 more
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