Now showing items 181-190 of 196
Experimental limits on monojet production in e+e- annihilation at 29 GeV
(Elsevier, 1985-06-20)
A search was made for e+e--->X1X2 where X1 consists of one or more light unobservable particles and X2 decays promptly to a visible jet of particles. One event was found for an integrated luminosity of 176 pb-1, a rate ...
A spin polarized disc
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1995-03)
We present a solution to the gravitational field equations in a Riemann-Cartan spacetime. The solution describes a disc of infinite radius and finite thickness. The solution has three forms which depend on the size of the ...
Parity violations in hydrogen and the fundamental structure of the weak current
(Elsevier, 1977-11-21)
Experiments in progress with hydrogen and deuterium may in practice determine the fundamental parameters and constituents of the weak interaction within the framework of unified gauge theories. In particular, for SU (2) ...
The quark mixing matrix in a composite model
(Elsevier, 1983-09)
The generalized mixing matrix of quarks is computed based on a composite model of quarks and leptons. Among potentials between constituent particles examined V(r) = Ars (As > 0) and A ln r (A > 0), it is shown that ...
Validity of standard model at 90 GeV
(Elsevier, 1984-05-17)
The interpretation of the recently observed "Z"-->e+e-[gamma] events has posed a challenge to the standard model. We propose a simple test which might shed light on the underlying dynamics.
Symmetry and symmetry breaking in generalized parastatistics
(Elsevier, 1983-09)
An analysis is made of the characteristics of internal symmetry and symmetry breaking in a quantum field theory with generalized parastatistics, defined by either double commutation relations or single commutation relations. ...
Quark mass effects and anomalies
(Elsevier, 1988-08-25)
When one takes into account that different quarks have unequal masses, five-point functions associated with pentagon graphs with two external gluons (2g) are modified by terms involving quark mass ratios. In this context ...
Instability of the existence of non-abelian vector potentials
(Elsevier, 1978-07-03)
We show the instability of the existence of vector potentials against variations of the field tensor in regions where it is "strongly non-abelian".
The lepton mixing matrix in a composite model
(Elsevier, 1981-08-20)
A generalized mixing matrix for leptons is presented based on a composite model of quarks and leptons. The mixing matrix is expressed in terms of one parameter, which is determined either by discussing that it is identical ...
Invariant background field method for chiral lagrangians including Wess-Zumino terms
(Elsevier, 1991-08-15)
A chiral invariant background field method is introduced in order to study the structure of higher order terms in chiral perturbation theory. Explicit one-loop calculations are presented together with the construction of ...