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Theory of Beauty Lifetimes
A critical review of the theoretical understanding of the lifetimes of beauty hadrons is given. A model-independent analysis using the heavy-quark expansion allows for a description of the lifetime ratios tau(B-)/tau(B0) and tau(Lambda_b)/tau(B0) in a small region of parameter space. It is demonstra...
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| Lenguaje: | eng |
| Publicado: |
1997
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| Acceso en línea: | https://dx.doi.org/10.1142/9789814503952_0009 http://cds.cern.ch/record/329334 |
| _version_ | 1780891058881691648 |
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| author | Neubert, M. |
| author_facet | Neubert, M. |
| author_sort | Neubert, M. |
| collection | CERN |
| description | A critical review of the theoretical understanding of the lifetimes of beauty hadrons is given. A model-independent analysis using the heavy-quark expansion allows for a description of the lifetime ratios tau(B-)/tau(B0) and tau(Lambda_b)/tau(B0) in a small region of parameter space. It is demonstrated that the lifetime ratio tau(B-)/tau(B0) cannot be used to extract the decay constant of the B meson. Implications for the semileptonic branching ratio and charm yield in B decays are pointed out. |
| id | cern-329334 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1997 |
| record_format | invenio |
| spelling | cern-3293342023-03-14T17:14:13Zdoi:10.1142/9789814503952_0009http://cds.cern.ch/record/329334engNeubert, M.Theory of Beauty LifetimesParticle Physics - PhenomenologyA critical review of the theoretical understanding of the lifetimes of beauty hadrons is given. A model-independent analysis using the heavy-quark expansion allows for a description of the lifetime ratios tau(B-)/tau(B0) and tau(Lambda_b)/tau(B0) in a small region of parameter space. It is demonstrated that the lifetime ratio tau(B-)/tau(B0) cannot be used to extract the decay constant of the B meson. Implications for the semileptonic branching ratio and charm yield in B decays are pointed out.A critical review of the theoretical understanding of the lifetimes of beauty hadrons is given. A model-independent analysis using the heavy-quark expansion allows for a description of the lifetime ratios tau(B-)/tau(B0) and tau(Lambda_b)/tau(B0) in a small region of parameter space. It is demonstrated that the lifetime ratio tau(B-)/tau(B0) cannot be used to extract the decay constant of the B meson. Implications for the semileptonic branching ratio and charm yield in B decays are pointed out.hep-ph/9707217CERN-TH-97-148CERN-TH-97-148oai:cds.cern.ch:3293341997-07-03 |
| spellingShingle | Particle Physics - Phenomenology Neubert, M. Theory of Beauty Lifetimes |
| title | Theory of Beauty Lifetimes |
| title_full | Theory of Beauty Lifetimes |
| title_fullStr | Theory of Beauty Lifetimes |
| title_full_unstemmed | Theory of Beauty Lifetimes |
| title_short | Theory of Beauty Lifetimes |
| title_sort | theory of beauty lifetimes |
| topic | Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.1142/9789814503952_0009 http://cds.cern.ch/record/329334 |
| work_keys_str_mv | AT neubertm theoryofbeautylifetimes |