Model-independent prediction of R(η c )
Abstract We present a model-independent prediction for R(η c )≡ℬℛ(B c + → η c τ + ν τ )/ℬℛ(B c + → η c µ + ν µ ). This prediction is obtained from the form factors through a combination of dispersive relations, heavy-quark relations at zero-recoil, and the limited existing determinations from latt...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2018-12-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP12(2018)114 |