Buscar
Mostrando ítems 1-10 de 194
Transport properties and equation of state of quark-nuclear matter
(Sociedade Brasileira de Física, 2003-06-01)
Transport equations for composite nucleons and deconfined quarks in quark-nuclear matter (QNM) are derived. QNM is a many-body system containing hadrons and deconfined quarks. The starting point is a microscopic quark-meson ...
Limits on anomalous top quark gauge couplings from Tevatron and LHC data
(2015-01-01)
We review and update current limits on possible anomalous couplings of the top quark to W gauge bosons. We consider data from top quark decay (as encoded in the W-boson helicity fractions) and single-top production (in the ...
1/Nc expansion and the spin-flavor structure of the quark interaction in the constituent quark model
(American Physical Society, 2010-12)
We study the hierarchy of the coefficients in the 1/Nc expansion for the negative parity L=1 excited baryons from the perspective of the constituent quark model. This is related to the problem of determining the spin-flavor ...
Transport properties and equation of state of quark-nuclear matter
(Sociedade Brasileira de Física, 2013)
Off-Diagonal Quark Distributions in Pions in the Effective Single-Instanton Approximation
(2000-12-01)
Nonperturbative functions that parametrize off-diagonal hadronic matrix elements of the light-cone leading-twist quark operators are considered. These functions are calculated within the proposed relativistic quark model ...
Off-Diagonal Quark Distributions in Pions in the Effective Single-Instanton Approximation
(2000-12-01)
Nonperturbative functions that parametrize off-diagonal hadronic matrix elements of the light-cone leading-twist quark operators are considered. These functions are calculated within the proposed relativistic quark model ...
Operator analysis of effective spin-flavor interactions for L=1 excited baryons
(American Physical Society, 2016-02-01)
We match the nonrelativistic quark model, with both flavor-dependent and flavor-independent effective quark-quark interactions, to the spin-flavor operator basis of the 1=Nc expansion for the L ¼ 1 nonstrange baryons. We ...
Second quantization approach to composite hadron interactions in quark models
(1996-01-18)
Starting from the Fock space representation of hadron bound states in a quark model, a change of representation is implemented by a unitary transformation such that the composite hadrons are redescribed by elementary-particle ...
Second quantization approach to composite hadron interactions in quark models
(1996-01-18)
Starting from the Fock space representation of hadron bound states in a quark model, a change of representation is implemented by a unitary transformation such that the composite hadrons are redescribed by elementary-particle ...
Pion structure in the instanton liquid model
(Interperiodica, 2000-09-01)
The covariant quark model of the pion based on the effective nonlocal quark-hadron Lagrangian involving nonlocality induced by instanton fluctuations of the QCD vacuum is reviewed. Explicit gauge invariant formalism allows ...