| Autor: |
P. Colangelo, F. De Fazio, F. Loparco, N. Losacco, M. Novoa-Brunet |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Journal of High Energy Physics, Vol 2022, Iss 9, Pp 1-31 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
1029-8479 |
| DOI: |
10.1007/JHEP09(2022)028 |
| Popis: |
Abstract We analyze the form factors parametrizing the B c → J/ψ, η c matrix elements of the operators in a generalized low-energy b → c semileptonic Hamiltonian. We consider an expansion in nonrelativistic QCD, classifying the heavy quark spin symmetry breaking terms and expressing the form factors in terms of universal functions in a selected kinematical range. Using as an input the lattice QCD results for the B c → J/ψ matrix element of the SM operator, we obtain information on other form factors. The extrapolation to the full kinematical range is also presented. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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