117864746
The Delta I = 1/2 Rule in the Large N Limit
The large-N limit is used to obtain a consistent picture of the K → ππ matrix elements. It is confirmed that the dominant Q6 penguin matrix elements are enhanced by an order of magnitude compared to those of the current-current operators and that this result is consistent with chiral perturbation theory. An additional enhancement of the penguin contributions is identified with respect to standard estimates which comes from an incomplete GIM cancellation above the charm quark mass. Performing the short-distance analysis to first nontrivial order in 1/N its validity and simplicity is demonstrated. Encouraging results are obtained for A(K → ππ) amplitudes and it is pointed out that further improvements can be obtained through the inclusion of the low-energy evolution which necessarily must be done in a meson rather than a quark picture.
123328857
Final state interaction phases in (B ---> K pi) decay amplitudes
A simple Regge pole model for $K\pi$ scattering explains the large $e^{i \delta}$ between isospin amplitudes which is observed at the D meson mass ($\delta \approx \pi/2$). It predicts $\delta \approx 14^{\circ}- 20^{\circ}$ at the B mass. Implications for ($B \to K \pi$) decays and extensions of the model to other two-body decay channels are briefly discussed. Comment: 8pages,latex
120345777
Geometrical T-violation
We investigate the possibility of having spontaneous T violation arising from complex vacuum expectation values with calculable phases, assuming geometrical values, entirely determined by the symmetry of the scalar potential.
123885243
Towards supersymmetric subconstituent models
Abstract 't Hooft's consistency equations for subconstituent models are generalized to supersymmetric theories and a few solutions are outlined.
119667263
The Attractor mechanism in the minimal tensor - scalar theory of gravity
In a previous letter, we proved that the minimal tensor–scalar theory of gravity with a spatially flat Einstein metric does not generically contain an attractor mechanism towards general relativity. Hereafter we extend our proof to the case of a spatially curved Einstein metric.
122190035
Positivity Of Energy For A Class Of Scalar - Tensor Theories Of Gravity
It is shown that for a class of scalar—tensor theories of gravity, positivity of the total energy follows from the reasonable requirement that the gravitational coupling which they define is finite, positive and asymptotically constant. The result extends with difficulty to a related unified theory for gravity and the electroweak fields.
108010999
The development and use of a high speed packet switching network in a high-energy physics laboratory
195705202
Local area networks for microcomputers
Abstract This paper analyses the ways in which modern high performance Local Area Networks (LANs) can be of use to microcomputers. It discusses some of the basic concepts of LANs, with special reference to international standards. It then presents ways in which LANs may be connected to, and used with microcomputers. Examples are given of existing applications.
60563789
The effect of the CERNET network on computing at CERN
107816989
Performance of the HPD minimum guidance systeme, pt 1
108673538
THE CERN TRACK-MATCH PROGRAM FOR VERTEX GUIDANCE BUBBLE CHAMBER MEASUREMENT SYSTEMS.