Results 21 to 30 of about 62,213 (219)
A systematic approach to the SILH Lagrangian
Nuclear Physics B, 2015 We consider the electroweak chiral Lagrangian, including a light scalar boson, in the limit of small ξ=v2/f2. Here v is the electroweak scale and f is the corresponding scale of the new strong dynamics.
Gerhard Buchalla +2 more
doaj +1 more source
Baryon Chiral Perturbation Theory in the 1/N Expansion [PDF]
, 2002 The chiral Lagrangian for baryons is formulated in an expansion in 1/N_c. The chiral Lagrangian implements the contracted spin-flavor symmetry of large-N_c baryons as well as nonet symmetry of the leading planar diagrams. Large-N_c consistency conditions
Jenkins, E.
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CONSTRAINED ELECTROWEAK CHIRAL LAGRANGIAN [PDF]
The Origin of Mass and Strong Coupling Gauge Theories, 2008 7 pages, 2 figures, talk presented at SCGT06 workshop, Nagoya, Japan (November 2006)
openaire +2 more sources
Self-interacting chiral p-forms in higher dimensions
Physics Letters B, 2019 There exists no natural variational principle for the dynamics of abelian p-form potentials with self-dual field strengths, also called chiral p-forms. Relying on the PST method, we establish the general consistency condition for a Lagrangian to describe
Ginevra Buratti +2 more
doaj +1 more source
Isospin-breaking effects in the three-pion contribution to hadronic vacuum polarization
Journal of High Energy Physics, 2023 Isospin-breaking (IB) effects are required for an evaluation of hadronic vacuum polarization at subpercent precision. While the dominant contributions arise from the e + e − → π + π − channel, also IB in the subleading channels can become relevant for a ...
Martin Hoferichter +3 more
doaj +1 more source
Remarks on the U(1) axial symmetry and the chiral transition in QCD at finite temperature [PDF]
, 2013 We discuss the role of the U(1) axial symmetry for the scalar and pseudoscalar meson mass spectrum of QCD at finite temperature, above the chiral transition at T_c, using a chiral effective Lagrangian model, which, in addition to the usual chiral ...
Meggiolaro, E., Mordà, A.
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High-Precision Nuclear Forces From Chiral EFT: State-of-the-Art, Challenges, and Outlook
Frontiers in Physics, 2020 We review a new generation of nuclear forces derived in chiral effective field theory using the recently proposed semilocal regularization method. We outline the conceptual foundations of nuclear chiral effective field theory, discuss all steps needed to
Evgeny Epelbaum +2 more
doaj +1 more source
Isospin-breaking effects in the two-pion contribution to hadronic vacuum polarization
Journal of High Energy Physics, 2022 Isospin-breaking (IB) effects in the two-pion contribution to hadronic vacuum polarization (HVP) can be resonantly enhanced, if related to the interference of the ρ(770) and ω(782) resonances.
Gilberto Colangelo +3 more
doaj +1 more source
Chiral Dynamics in the electroweak sector [PDF]
, 2000 Using a chiral Lagrangian we show that strongly interacting models of electroweak symmetry breaking are not in conflict with precision data. Such models, like Technicolor, need not lead to a heavy Higgs-like signal.
Nyffeler, Andreas
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Chiral and Gluon Condensates at Finite Temperature [PDF]
, 1994 We investigate the thermal behaviour of gluon and chiral condensates within an effective Lagrangian of pseudoscalar mesons coupled to a scalar glueball. This Lagrangian mimics the scale and chiral symmetries of QCD. (Submitted to Z. Phys.
A. Das +34 more
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