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Improved $B \to \pi l \nu_l$ form factors from the lattice
We present the results of a lattice computation of the form factors for B to pi l nu_l decays near zero-recoil. These results will allow a model-independent determination of Vub when measurements of the differential decay rate become available. We also provide models for extrapolation of the form fa...
| Autores principales: | , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
1999
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/S0370-2693(00)00754-1 http://cds.cern.ch/record/407261 |
| _version_ | 1780894422634856448 |
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| author | Bowler, K.C. Del Debbio, L. Flynn, J.M. Lellouch, L. Lesk, V. Maynard, C.M. Nieves, J. Richards, D.G. |
| author_facet | Bowler, K.C. Del Debbio, L. Flynn, J.M. Lellouch, L. Lesk, V. Maynard, C.M. Nieves, J. Richards, D.G. |
| author_sort | Bowler, K.C. |
| collection | CERN |
| description | We present the results of a lattice computation of the form factors for B to pi l nu_l decays near zero-recoil. These results will allow a model-independent determination of Vub when measurements of the differential decay rate become available. We also provide models for extrapolation of the form factors and rate to the full recoil range. Our computation is performed in the quenched approximation to QCD on a 24^3 x 48 lattice at beta=6.2, using a non-perturbatively order a improved action. The masses of all light valence quarks involved are extrapolated to their physical values. |
| id | cern-407261 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1999 |
| record_format | invenio |
| spelling | cern-4072612023-03-14T17:12:45Zdoi:10.1016/S0370-2693(00)00754-1http://cds.cern.ch/record/407261engBowler, K.C.Del Debbio, L.Flynn, J.M.Lellouch, L.Lesk, V.Maynard, C.M.Nieves, J.Richards, D.G.Improved $B \to \pi l \nu_l$ form factors from the latticeParticle Physics - LatticeWe present the results of a lattice computation of the form factors for B to pi l nu_l decays near zero-recoil. These results will allow a model-independent determination of Vub when measurements of the differential decay rate become available. We also provide models for extrapolation of the form factors and rate to the full recoil range. Our computation is performed in the quenched approximation to QCD on a 24^3 x 48 lattice at beta=6.2, using a non-perturbatively order a improved action. The masses of all light valence quarks involved are extrapolated to their physical values.We present the results of a lattice computation of the form factors for B 0 → π − l + ν l decays near zero-recoil. These results will allow a determination of the CKM matrix element | V ub | when measurements of the differential decay rate become available. We also provide models for extrapolation of the form factors and rate to the full recoil range. Our computation is performed in the quenched approximation to QCD on a 24 3 ×48 lattice at β =6.2, using a non-perturbatively O (a) -improved action. The masses of all light valence quarks involved are extrapolated to their physical values.We present the results of a lattice computation of the form factors for B^0 ->pi^- l^+nu_l decays near zero-recoil. These results will allow a determination of the CKM matrix element |Vub| when measurements of the differential decay rate become available. We also provide models for extrapolation of the form factors and rate to the full recoil range. Our computation is performed in the quenched approximation to QCD on a 24^3x48 lattice at beta=6.2, using a non-perturbatively O(a)-improved action. The masses of all light valence quarks involved are extrapolated to their physical values.hep-lat/9911011EDINBURGH-1999-10SHEP-99-12CERN-TH-99-265CPT-99-P-3885LAPTH-757-99JLAB-THY-99-25HEP-99-12CPT-99-P.3885 --LAPTH-757-99CERN-TH-99-265CPT-3885EDINBURGH-99-10HEP-99-12JLAB-THY-99-25LAPP-TH-757oai:cds.cern.ch:4072611999-11-10 |
| spellingShingle | Particle Physics - Lattice Bowler, K.C. Del Debbio, L. Flynn, J.M. Lellouch, L. Lesk, V. Maynard, C.M. Nieves, J. Richards, D.G. Improved $B \to \pi l \nu_l$ form factors from the lattice |
| title | Improved $B \to \pi l \nu_l$ form factors from the lattice |
| title_full | Improved $B \to \pi l \nu_l$ form factors from the lattice |
| title_fullStr | Improved $B \to \pi l \nu_l$ form factors from the lattice |
| title_full_unstemmed | Improved $B \to \pi l \nu_l$ form factors from the lattice |
| title_short | Improved $B \to \pi l \nu_l$ form factors from the lattice |
| title_sort | improved $b \to \pi l \nu_l$ form factors from the lattice |
| topic | Particle Physics - Lattice |
| url | https://dx.doi.org/10.1016/S0370-2693(00)00754-1 http://cds.cern.ch/record/407261 |
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