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Form factors for semileptonic $B\to \pi\ , B_s\to K$ and $B_s\to D_s$ decays
We report on our determinations of $B\to \pi\ell\nu$, $B_s\to K \ell \nu$ and $B_s\to D_s \ell \nu$ 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...
| Autores principales: | , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2021
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.22323/1.396.0306 http://cds.cern.ch/record/2799043 |
| _version_ | 1780972509807509504 |
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| author | Flynn, Jonathan Hill, Ryan Juettner, Andreas Soni, Amarjit Tsang, Justus Tobias Witzel, Oliver |
| author_facet | Flynn, Jonathan Hill, Ryan Juettner, Andreas Soni, Amarjit Tsang, Justus Tobias Witzel, Oliver |
| author_sort | Flynn, Jonathan |
| collection | CERN |
| description | We report on our determinations of $B\to \pi\ell\nu$, $B_s\to K \ell \nu$ and $B_s\to D_s \ell \nu$ 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 $2.79\,\text{GeV}$. We use the relativistic heavy quark action for $b$ quarks and charm quarks are simulated with the Moebius domain-wall fermion action. |
| id | cern-2799043 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2021 |
| record_format | invenio |
| spelling | cern-27990432023-07-27T04:15:01Zdoi:10.22323/1.396.0306http://cds.cern.ch/record/2799043engFlynn, JonathanHill, RyanJuettner, AndreasSoni, AmarjitTsang, Justus TobiasWitzel, OliverForm factors for semileptonic $B\to \pi\ , B_s\to K$ and $B_s\to D_s$ decayshep-latParticle Physics - LatticeWe report on our determinations of $B\to \pi\ell\nu$, $B_s\to K \ell \nu$ and $B_s\to D_s \ell \nu$ 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 $2.79\,\text{GeV}$. We use the relativistic heavy quark action for $b$ quarks and charm quarks are simulated with the Moebius domain-wall fermion action.We report on our determinations of $B\to \pi\ell\nu$, $B_s\to K \ell \nu$ and $B_s\to D_s \ell \nu$ 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 $2.79\,\text{GeV}$. We use the relativistic heavy quark action for $b$ quarks and charm quarks are simulated with the Möbius domain-wall fermion action.arXiv:2112.10580Siegen SI-HEP-2021-36oai:cds.cern.ch:27990432021-12-20 |
| spellingShingle | hep-lat Particle Physics - Lattice Flynn, Jonathan Hill, Ryan Juettner, Andreas Soni, Amarjit Tsang, Justus Tobias Witzel, Oliver Form factors for semileptonic $B\to \pi\ , B_s\to K$ and $B_s\to D_s$ decays |
| title | Form factors for semileptonic $B\to \pi\ , B_s\to K$ and $B_s\to D_s$ decays |
| title_full | Form factors for semileptonic $B\to \pi\ , B_s\to K$ and $B_s\to D_s$ decays |
| title_fullStr | Form factors for semileptonic $B\to \pi\ , B_s\to K$ and $B_s\to D_s$ decays |
| title_full_unstemmed | Form factors for semileptonic $B\to \pi\ , B_s\to K$ and $B_s\to D_s$ decays |
| title_short | Form factors for semileptonic $B\to \pi\ , B_s\to K$ and $B_s\to D_s$ decays |
| title_sort | form factors for semileptonic $b\to \pi\ , b_s\to k$ and $b_s\to d_s$ decays |
| topic | hep-lat Particle Physics - Lattice |
| url | https://dx.doi.org/10.22323/1.396.0306 http://cds.cern.ch/record/2799043 |
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