Abstract
We report on our determinations of B → πℓv, Bs → Kℓν and Bs → Dsℓν semileptonic form factors. In addition we discuss the determination of R-ratios testing lepton-flavor universality and suggest an improved ratio. Our calculations are based on the set of 2+1 flavor domain-wall Iwasaki gauge field configurations generated by the RBC/UKQCD collaboration with three lattice spacings of 1/a = 1.78, 2.38, and 2.79 GeV. We use the relativistic heavy quark action for b quarks and charm quarks are simulated with the Möbius domain-wall fermion action.
| Originalsprog | Engelsk |
|---|---|
| Artikelnummer | 306 |
| Tidsskrift | Proceedings of Science |
| Vol/bind | 396 |
| ISSN | 1824-8039 |
| Status | Udgivet - 8. jul. 2022 |
| Begivenhed | 38th International Symposium on Lattice Field Theory, LATTICE 2021 - Virtual, Online, USA Varighed: 26. jul. 2021 → 30. jul. 2021 |
Konference
| Konference | 38th International Symposium on Lattice Field Theory, LATTICE 2021 |
|---|---|
| Land/Område | USA |
| By | Virtual, Online |
| Periode | 26/07/2021 → 30/07/2021 |
Bibliografisk note
Funding Information:We thank our RBC/UKQCD collaborators for helpful discussions and suggestions. Computations used resources provided by the USQCD Collaboration, funded by the Office of Science of
Funding Information:
the US Department of Energy and by the ARCHER UK National Supercomputing Service, as well as computers at Columbia University and Brookhaven National Laboratory. We used gauge field configurations generated on the DiRAC Blue Gene Q system at the University of Edinburgh, part of the DiRAC Facility, funded by BIS National E-infrastructure grant ST/K000411/1 and STFC grants ST/H008845/1, ST/K005804/1 and ST/K005790/1. The project leading to this application has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 894103. This project has received funding from Marie Skłodowska-Curie grant 659322 (EU Horizon 2020), the European Research Council grant 279757 (EU FP7/2007–2013), STFC grants ST/P000711/1 and ST/T000775/1. RH was supported by the DISCnet Centre for Doctoral Training (STFC grant ST/P006760/1). AS was supported in part by US DOE contract DE–SC0012704. JTT acknowledges support from the Independent Research Fund Denmark, Research Project 1, grant 8021–00122. No new experimental data was generated.
Publisher Copyright:
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