Results 71 to 80 of about 196,051 (181)
An effective strong-coupling theory of composite particles in UV-domain
Journal of High Energy Physics, 2017 We briefly review the effective field theory of massive composite particles, their gauge couplings and characteristic energy scale in the UV-domain of UV-stable fixed point of strong four-fermion coupling, then mainly focus the discussions on the decay ...
She-Sheng Xue
doaj +1 more source
Lattice Quantum ChromoDynamics with approximately chiral fermions [PDF]
, 2008 In this work we present Lattice QCD results obtained by approximately chiral fermions. We use the CI fermions in the quenched approximation to investigate the excited baryon spectrum and to search for the Theta^+ pentaquark on the lattice. Furthermore we
Hierl, Dieter
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PI-PI-SCATTERING AND CHIRAL LAGRANGIANS
, 1988 Published version is located at http://prd.aps.org/abstract/PRD/v38/i7/p2195_1We analyze results on π-π scattering using a framework based on nonlinear chiral Lagrangians both at the tree level and at one-loop order.
RAMIREZ, C, VALENCIA, G, Donoghue, JF
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Flavor decomposition of the pion-nucleon σ-term
Journal of High Energy Physics, 2019 We re-analyze the flavor decomposition of the pion-nucleon σ-term in the framework of baryon chiral perturbation to fourth order. We employ a covariant and the heavy baryon framework including also the low-lying decuplet.
Daniel Severt +2 more
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Dynamical axions and gravitational waves
Journal of High Energy Physics, 2019 In this paper we explore the possibility of observable gravitational waves as a manifestation of the QCD axion dynamics. In particular, we focus on dynamical axion models which solve the strong CP problem, and include the confinement of a QCD-like gauge ...
Djuna Croon +2 more
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Chiral effective Lagrangian and quark masses [PDF]
Nuclear Physics B - Proceedings Supplements, 2003 The status of lattice determinations of quark masses is reviewed (with the exception of m_b). Attempts to extract the low-energy constants in the effective chiral Lagrangian are discussed, with special emphasis on those couplings which are required to test the hypothesis of a massless up-quark.
openaire +2 more sources
Chiral Lagrangians for radiative decays of heavy hadrons [PDF]
Physical Review D, 1993 The radiative decays of heavy mesons and heavy baryons are studied in a formalism which incorporates both the heavy quark symmetry and the chiral symmetry. The chiral Lagrangians for the electromagnetic interactions of heavy hadrons consist of two pieces: one from gauging electromagnetically the strong-interaction chiral Lagrangian, and the other from ...
Cheng, H. Y. +5 more
openaire +3 more sources
Strong WW scattering chiral lagrangians, unitarity and resonances [PDF]
, 1996 Chiral lagrangians provide a model independent description of the strongly interacting symmetry breaking sector. In this work, first we review the LHC sensitivity to the chiral parameters (in the hardest case of non-resonant low-energy WW scattering ...
Pelaez, J.R., Pelaez, J.
core
Chiral Lagrangians and Nambu-Jona-Lasinio like models
, 1995 We discuss the low-energy analysis of models involving quarks and four-fermion couplings. The relation with QCD and with other models of mesons and meson plus quarks at low energies is discussed.
Chiral Lagrangians, Johan Bijnens
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Effective theories of finite volume QCD [PDF]
, 2008 Finite volume QCD close to the chiral limit cannot be described by chiral Perturbation Theory using the usual p-expansion when the correlation length of pions becomes larger than the size of the box.
BASILE, FRANCESCO
core