Phenomenological analysis of a topless left-right model

Pakvasa, Sandip ; Roy, D. P. ; Uma Sankar, S. (1990) Phenomenological analysis of a topless left-right model Physical Review D - Particles, Fields, Gravitation and Cosmology, 42 (9). pp. 3160-3168. ISSN 1550-7998

Full text not available from this repository.

Official URL:

Related URL:


We reanalyze a topless left-right model due to Ma, after allowing flavor-changing neutral currents which are consistent with all the experimental limits coming from flavor-changing processes. The resulting model can naturally reproduce the observed values of Bd0-B̅d0 mixing, where the original model had failed by 8 orders of magnitude. Thus, the model is viable from the viewpoint of low-energy phenomenology. In the case of Z0 physics, however, we see that the model makes distinctive predictions for some of the Z0→ff̅ partial widths due to the nonstandard couplings of the fermion f. The recent measurements of these partial widths from CERN LEP seem to clearly rule out this model. Indeed the precision measurement of the Z0→bb̅ partial width along with the known properties of b decay seems to rule out any topless model.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:42805
Deposited On:06 Jun 2011 12:54
Last Modified:06 Jun 2011 12:54

Repository Staff Only: item control page