Results 21 to 30 of about 196,051 (181)
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 ⋅ $$ \
Timothy Cohen +3 more
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DELTA-S=1 CHIRAL LAGRANGIANS REVISITED
, 1987 The published version is located at http://prd.aps.org/abstract/PRD/v35/i9/p2764_1Previous work on the contributions of quartic chiral Lagrangians to kaon and hyperon nonleptonic decays is extended by considering an expanded set of such operators at tree
Golowich, E
core +3 more sources
Low energy pion–$$\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
doaj +1 more source
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 lagrangian formulation of chiral scalars
Physics Letters B, 1987 Abstract The lagrangian proposed by Siegel describing left- or right-moving scalars in two dimensions is analysed. The existence of anomalies is pointed out and a modification of the lagrangian leading to the elimination of anomalies is proposed. The generalization for chiral scalars defined on an arbitrary Riemann surface is discussed.
IMBIMBO, CAMILLO, A. SCHWIMMER
openaire +2 more sources
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
openaire +3 more sources
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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