Results 11 to 20 of about 2,429 (218)
The electroweak chiral Lagrangian reanalyzed [PDF]
Physical Review D, 2000 44 pages, Revtex. v2: Sections II and III interchanged. New section II now self-contained. Discussions improved in sections I, II, V.C and VI. Conclusions unchanged.
Nyffeler, Andreas, Schenk, Andreas
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a → πππ decay at next-to-leading order in chiral perturbation theory [PDF]
Journal of High Energy Physics, 2022 We discuss the construction of the two-flavour axion-pion effective Lagrangian at the next-to-leading order (NLO) in chiral perturbation theory and present, as a phenomenological application, the calculation of the decay rate of a GeV-scale axion-like ...
Luca Di Luzio, Gioacchino Piazza
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Consistent Treatment of Axions in the Weak Chiral Lagrangian [PDF]
Physical Review Letters, 2021 5 pages, 1 ...
Bauer, Martin +4 more
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Parity-violating πNN coupling constant from the flavor-conserving effective weak chiral Lagrangian [PDF]
Physics Letters B, 2017 We investigate the parity-violating pion–nucleon–nucleon coupling constant hπNN1, based on the chiral quark-soliton model. We employ an effective weak Hamiltonian that takes into account the next-to-leading order corrections from QCD to the weak ...
Chang Ho Hyun +2 more
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Fixed points of (0,2) Landau-Ginzburg renormalization group flows and the chiral algebra
Journal of High Energy Physics, 2022 We discuss renormalization group flows in two-dimensional quantum field theories with (0,2) supersymmetry. We focus on theories with UV described by a Landau-Ginzburg Lagrangian and use the chiral algebra to constrain the IR dynamics. We present examples
Marco Bertolini +2 more
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Chiral Lagrangians and the QCD string [PDF]
Physics Letters B, 1999 We propose a method to derive the low-energy efective action of QCD assuming that the long-distance properties of strong interactions can be described by a string theory. We bypass the usual problems related to the existence of the tachyon and absence of the adequate Adler zero by using a sigma model approach where excitations above the correct ...
Alfaro Solís, Jorge Luis +2 more
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Low-energy effective description of dark $Sp(4)$ theories
SciPost Physics, 2023 Strongly interacting massive particles are viable dark matter candidates. We consider a dark $Sp(4)$ gauge theory with $N_f=2$ fermions in the pseudo-real fundamental representation and construct the chiral low-energy effective theory.
Suchita Kulkarni, Axel Maas, Seán Mee, Marco Nikolic, Josef Pradler, Fabian Zierler
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Chiral Lagrangian for excited pions [PDF]
Physical Review D, 1997 We construct a chiral Lagrangian containing besides the usual pion field (pi) also its first radial excitation (pi'). The Lagrangian is derived by bosonization of a Nambu--Jona-Lasinio quark model with separable non-local interactions, with form factors corresponding to 3-dimensional ground and excited state wave functions.
Volkov, M. K., Weiss, C.
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Isospin Symmetry Breaking in Non-Perturbative QCD
Physical Sciences Forum, 2023 At finite isospin chemical potential μI, the tension between measured decays and partial branching ratios of neutral and charged bosons as functions of dimuon mass squared and the Standard Model (SM) isospin asymmetry can be analyzed in nonperturbative ...
Abdel Nasser Tawfik
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Nonlinear (chiral) p-form electrodynamics
Journal of High Energy Physics, 2022 In our previous article Phys. Rev. Lett. 127 (2021) 271601, we announced a novel ‘democratic’ Lagrangian formulation of general nonlinear electrodynamics in four dimensions that features electric and magnetic potentials on equal footing. Here, we give an
Zhirayr Avetisyan +2 more
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