Results 101 to 110 of about 1,082 (220)
Journal of High Energy PhysicsWorking with Resonance Chiral Theory, within the two resonance multiplets saturation scheme, we satisfy leading (and some subleading) chiral and asymptotic QCD constraints and accurately fit simultaneously the π 0 , η, η′ transition form factors, for ...
Emilio J. Estrada +3 more
doaj +1 more source
Strings, branes, and gravity duals of gauge theories [PDF]
, 2002 We study the correspondence between certain supersymmetric gauge theories and their dual supergravity descriptions. Using low-energy brane probes of the super-gravity geometries we find moduli spaces of vacua, as expected from considering the dual gauge ...
Lovis, Kenneth John
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Further study on excited Ξ QQ ′ $$ {\Xi}_{QQ^{\prime }} $$ via photoproduction at CEPC and FCC-ee
Journal of High Energy PhysicsWithin the framework of NRQCD, the photoproduction of doubly heavy baryons Ξ cc , Ξ bc , Ξ bb and their P-wave excited states has been systematically investigated. The production mechanism is that a color anti-triplet or sextuplet diquark ⟨QQ ′⟩ is first
Hong-Hao Ma, Juan-Juan Niu, Lei Guo
doaj +1 more source
Effective Field Theory for QCD-like Theories and Constraints on the Two Higgs Doublet Model [PDF]
, 2011 This thesis includes two topics.The first three papers is the major part of this thesis, which is about higher order calculations in the effective field theories of three QCD-like theories. These three QCD-like theories are distinguished by having quarks
Lu, Jie
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Effective Field Theory for Diffractive QCD Processes
, 1993 An effective field theory describing the QCD diffraction scattering is constructed. The constituent quarks interacting with multiperi- pheral gluons and Goldstone bosons are described by impact- parameter two-dimensional sigma models for the color and the flavor degrees of freedom.
openaire +2 more sources
Producing fully-charmed tetraquarks via charm quark fragmentation in colliders
Journal of High Energy PhysicsWithin the framework of nonrelativistic QCD (NRQCD), we calculate the fragmentation function for a charm quark into an S-wave fully-charmed tetraquark, denoted as T 4c .
Xiao-Wei Bai +5 more
doaj +1 more source
Monte Carlo approaches to effective field theories [PDF]
, 1991 In this paper, we explore the application of continuum Monte Carlo methods to effective field theory models. Effective field theories, in this context, are those in which a Fock space decomposition of the state is useful.
Carlson, J. (Los Alamos National Lab., NM (United States)) +1 more
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On the power counting in effective field theories [PDF]
, 2014 We discuss the systematics of power counting in general effective field theories, focusing on those that are nonrenormalizable at leading order. As an illuminating example we consider chiral perturbation theory gauged under the electromagnetic U(1 ...
Buchalla, Gerhard +2 more
core +1 more source
Effective Field Theories for Quantum Chromo- and Electrodynamics [PDF]
, 2016 Effective field theories (EFTs) provide frameworks to systematically improve perturbation expansions in quantum field theory. This improvement is essential in quantum chromodynamics (QCD) predictions, both at low energy in the description of low momentum
Zhang, Ou
core +2 more sources
Effective Field Theories for heavy probes in a hot QCD plasma and in the early universe [PDF]
, 2016 There are many interesting problems in heavy-ion collisions and in cosmology that involve the interaction of a heavy particle with a medium. An example is the dissociation of heavy quarkonium seen in heavy-ion collisions.
Escobedo, Miguel A. +3 more
core +1 more source