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Bounds on the W-Boson Electric Dipole Moment -Revisited

P. Saxena·Prachi Parashar·N. K. Sharma·Ashok K Nagawat·Sardar Singh
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Abstract

Keeping in view the suggestion of Barr and Marciano [7] that the cut of procedure involves a good deal of uncertainity in the prediction of E.D.M. of W - boson, we have re-examined the earlier calculation by Marciano and Queijeiro [2] by replacing the Cut-off regularization process by BPHZ regularization[8]. This works in a clean and unambiguous manner without involving any approximation. We also examine apparently inapplicable approximations like using m(f) = m(f')in [2]. The bounds on lambda(w) and d(w) are significantly changed in all cases as compared with those reported in [2]. The necessary caution that is to be excercised while using approximations is explicitly pointed out. PACS number (s): 13.40. Em

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P. Saxena, Prachi Parashar, N. K. Sharma, Ashok K Nagawat, Sardar Singh. 2002-04-02. Bounds on the W-Boson Electric Dipole Moment -Revisited. https://arxiv.org/abs/hep-ph/0204019

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