Abstract
We perform a model independent analysis of new physics in decay. We intend to identify new physics operator(s) which can provide large enhancement in the branching ratio of above its standard model prediction. For this, we consider new physics in the form of vector, axial-vector, scalar and pseudoscalar operators. We find that scalar and pseudoscalar operators do not contribute to the branching ratio of . We perform a global fit to all relevant data for different new physics scenarios. For each of these scenarios, we predict . We find that a significant enhancement in is not allowed by any of these new physics operators. In fact, for all new physics scenarios providing a good fit to the data, the branching ratio of is suppressed as compared to the standard model (SM) value. Hence the present data indicates that the future measurement of is expected to be suppressed in comparison to the standard model prediction.
- Received 24 November 2017
DOI:https://doi.org/10.1103/PhysRevD.97.035007
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society