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I review the present state of our knowledge about the masses and weak mixing elements of the u, d, s quarks. This is the written version of lectures given in the 1993 Theoretical Advanced Study Instit...
We examine mass-corrected SU(6) symmetry predictions in the quark model relating vector, axial-vector, and strong NN and NΔ couplings, and demonstrate that the experimental NΔ value is significantly h...
Two Comparative Case Studies of b-quark and c-quark Physics: • Particle-antiparticle Mixing • Radiative Weak Decays
Dollar mixed weak radioactive decay D meson pseudo-scalar meson particle antiparticles
2014/12/23
We discuss prospects for detecting the two charm-related phenomena of $D^0$-${\bar D}^0$ mixing and weak radiative decays of $D$ mesons ({\it e.g.} $D\to K^* + \gamma$). A general update of particle-a...
Chiral sum rules to second order in quark mass
Isospin hypercharged axial vector current chiral perturbation theory chiral spectrum function low energy spectrum functions
2014/12/22
A new calculation of the isospin and hypercharge axial-vector current propagators [ ΔA33μν(q2) and ΔA88μν(q2)] to two loops in SU(3)×SU(3) chiral perturbation theory is used to derive chiral spectral ...
In theories in which the parameters of the low energy theory are not unique, perhaps having different values in different domains of the universe as is possible in some inflationary models, the fermio...
Fine tunings and quark masses: Phenomenology of multiple domain theories
Particles physical parameters the universe
2014/12/22
This talk describes some of the consequences for particle phenomenology of the hypothesis that the physical parameters may vary in different domains of the universe.
QCD condensates for the light quark V-A correlator
Energy decay data electroweak penguin operators
2014/12/20
We use the procedure of pinched-weight finite energy sum rules to determine the operator product expansion (OPE) coefficients a6,…,a16 of the flavor ud V-A correlator in terms of existing hadronic τ d...
Electromagnetic properties of nucleons and hyperons in a Lorentz covariant quark model
Magnetic nuclear lorentz covariance the bound state quark let-down pseudo-scalar meson
2014/12/20
We calculate magnetic moments of nucleons and hyperons and N -> Delta + gamma transition characteristics using a manifestly Lorentz covariant chiral quark approach for the study of baryons as bound st...
Light baryon magnetic moments and N ->Delta gamma transition in a Lorentz covariant chiral quark approach
Magnetic moment light baryons lorentz covariance baryons bound state pseudo-scalar meson
2014/12/20
We calculate magnetic moments of light baryons and N→Δγ transition characteristics using a manifestly Lorentz covariant chiral quark approach for the study of baryons as bound states of constituent qu...
Quark and lepton masses and mixing in the landscape
Lepton yukawa coupling matrix element
2014/12/20
Even if quark and lepton masses are not uniquely predicted by the fundamental theory, as may be the case in the string theory landscape, nevertheless their pattern may reveal features of the underlyin...
Constraints on the variability of quark masses from nuclear binding
Nuclear binding the light quark heavy nuclei attractive
2014/12/19
Based on recent work on nuclear binding, we update and extend the anthropic constraints on the light quark masses, with results that are more tightly constrained than previously obtained. We find that...
It is argued that the experimentally observed quark decay of high generations to lower generations is due to the existence of a 5th force which explicitly violates the CP symmetry. The main supporting...
Energy release from hadron-quark phase transition in neutron stars and the axial $w$-mode of gravitational waves
Energy release hadron-quark phase transition axial $w$-mode of gravitational waves
2010/12/21
Describing the hyperonic and quark phases of neutron stars with an isospin- and momentum-
dependent effective interaction for the baryon octet and the MIT bag model, respectively, and using the Gibbs...
Spatially Modulated Phase in Holographic Quark-Gluon Plasma
Spatially Modulated Phase Holographic Quark-Gluon Plasma
2010/12/24
We present a string theory construction of a gravity dual of a spatially modulated phase. In our earlier work, we showed that the Chern-Simons term in the 5-dimensional Maxwell theory destabilizes th...
A thermal field theory derivation of the source term induced by a fast parton from the quark energy-momentum tensor
thermal field theory derivation of the source term fast parton quark energy-momentum tensor
2011/1/10
I derive the distribution of energy and momentum transmitted from a fast parton to a medium of
thermalized quarks, or the source term, in perturbative thermal field theory directly from the quark ene...