121484834
Avoidance of counter-example to non-abelian Bloch-Nordsieck conjecture by using coherent state approach
It is shown that the counter-example to the non-abelian Bloch-Nordsieck conjecture in “q + q → γ∗ + soft gluons” to order αs2 is avoided at the cross section level if the initial st prepared according to the coherent state approach for treatment of the infrared region of non-abelian gauge theories.
116758744
Pion dissociation in the nuclear Coulomb field
115882781
Cheng-wu picture applied to gamma p ---> rho0 p and phi p
119996715
Neutrino physics: New flavors or charm, then color, excitation
Investigation of charm, then color, excitation through right-handed, color-octet currents is suggested as a more economical way than adding new flavors for avoiding the conflict of the Weinberg-Salam model with present ..nu.. and nu-bar data. The effects from simply adding to the Glashow-Iliopoulos-Maiani current a new right-handed color-octet weak current (the analog of the usual Cabibbo current) are calculated and compared with available charged-current and neutral-current data. A color-octet piece in the weak currents, in general, does not change the lowest-order predictions for the Weinberg-Salam model for (i) elastic and quasi-elastic ..nu..- or nu-bar-nucleon scattering, (ii) neutral-current-induced parity-violating transitions in atomic physics, and (iii) coherent neutrino-nucleus scattering.
121336546
FEYNMAN RULES FOR AN O(4) FAMILY WITH NO GHOSTS.
14270584
Tau decays beyond the standard model
In a recent paper, 8 semileptonic parameters were defined to specify the most general Lorentz-invariant spin correlation functions for 2-body τ decays. These parameters can be used to search for anomalous Γ L , Γ T polarized-partial widths, for non-CKM-type leptonic CP violation, and for leptonic T FS violation. They can also be used to bound the effective-mass scales A for “new physics” arising from additional Lorentz structures, e.g. from lepton compositeness, tau weak magnetism, weak electricity, or second-class currents. It is emphasized that (i) for these tests “different modes have different merits” and that (ii) the parameters can be measured either by using spin-correlation techniques without polarized beams, or with longitudinally polarized beams.
121276027
Consequences of su(3)'' excitation in baryon resonances