Analysis of tbW and ttZ couplings from CLEO and LEP/SLC data

Details Analysis of tbW and ttZ couplings from CLEO and LEP/SLC data Analysis of tbW and ttZ couplings from CLEO and LEP/SLC data

1999-03-18

arxiv.org/abs/hep-ph/9903394v1

Phys.Lett.B457:334-340,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 3 figures, requires psfig.tex

Scientific paper

10.1016/S0370-2693(99)00541-9

We update the constraints on anomalous dimension four $\tbw$ and $\ttz$ couplings by using CLEO $b \ra s \gamma$ and LEP/SLC precision $Z$-pole data. It is found that the data imposes very stringent bounds on them. Moreover, the $2 \sigma$ pull from SM predictions of $A_{LR}$(hadrons), $A_b$ and $A_{FB}$(b) have little chance of being explained by the strongly constrained anomalous couplings.

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