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36 papers · 2 filters
The and Transitions in the Extended NJL Model
Johan Bijnens, Ansar Fayyazuddin, Joaquim Prades
We calculate within the Extended Nambu--Jona-Lasinio model the leading in contribution to to all orders in the external momenta and quark masses. This result…
- Z interferometry at a -factory
J. Bernabeu, F. J. Botella, O. Vives
We analyze the possibilities that the proposed -factories offer to measure interference. In the unpolarized beam case, we study different signatures in the channel, t…
Weak --Amplitudes in the Chiral and --Expansions
A. Pich, E. de Rafael
It is shown that there exist symmetry constraints for non--leptonic weak amplitudes which emerge when the --expansion restricted to the leading and next--to--leading approxi…
Selectron Pair Production in e+e- Colliders and the Supergravity Spectrum
Beatriz de Carlos, Marco A. Diaz
Selectrons may be produced in pairs at LEPII if their mass is less than about 100 GeV. Preferably, they decay into the lightest neutralino plus an electron. In a scenario where sel…
Asymmetric Inflationary Reheating and the Nature of Mirror Universe
Z. G. Berezhiani, A. D. Dolgov, R. N. Mohapatra
The existence of a shadow world (or mirror universe) with matter and forces identical to that of the visible world but interacting with the latter only via gravity can be motivated…
Weak magnetic dipole moments in two-Higgs-doublet models
J. Bernabeu, D. Comelli, L. Lavoura +1
We investigate the effects of the new scalars in a two-Higgs-doublet model on the weak magnetic dipole moments of the fermions at the peak. Proportionality of the Yukawa coupli…