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R$_{b}$ in supergravity models
We compute the supersymmetric contribution to R_{b}\equiv \Gamma (Z\to b{\bar b})/\Gamma (Z\to {\rm hadrons}) in a variety of supergravity models. We find R^{\rm susy}_b\lsim0.0004, which does not shift significantly the Standard Model prediction (R^{\rm SM}_b=0.2162 for m_t=160\GeV). An improvement...
| Autores principales: | , , |
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| Lenguaje: | eng |
| Publicado: |
1995
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| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/274760 |
| _version_ | 1780887397503860736 |
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| author | Wang, Xu Lopez, Jorge L. Nanopoulos, Dimitri V. |
| author_facet | Wang, Xu Lopez, Jorge L. Nanopoulos, Dimitri V. |
| author_sort | Wang, Xu |
| collection | CERN |
| description | We compute the supersymmetric contribution to R_{b}\equiv \Gamma (Z\to b{\bar b})/\Gamma (Z\to {\rm hadrons}) in a variety of supergravity models. We find R^{\rm susy}_b\lsim0.0004, which does not shift significantly the Standard Model prediction (R^{\rm SM}_b=0.2162 for m_t=160\GeV). An improvement in experimental precision by a factor of four would be required to be sensitive to such an effect. |
| id | cern-274760 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1995 |
| record_format | invenio |
| spelling | cern-2747602020-07-23T02:49:42Zhttp://cds.cern.ch/record/274760engWang, XuLopez, Jorge L.Nanopoulos, Dimitri V.R$_{b}$ in supergravity modelsParticle Physics - PhenomenologyWe compute the supersymmetric contribution to R_{b}\equiv \Gamma (Z\to b{\bar b})/\Gamma (Z\to {\rm hadrons}) in a variety of supergravity models. We find R^{\rm susy}_b\lsim0.0004, which does not shift significantly the Standard Model prediction (R^{\rm SM}_b=0.2162 for m_t=160\GeV). An improvement in experimental precision by a factor of four would be required to be sensitive to such an effect.We compute the supersymmetric contribution to $R_{b}\equiv \Gamma (Z\to b{\bar b})/\Gamma (Z\to {\rm hadrons})$ in a variety of supergravity models. We find $R~{\rm susy}_b\lsim0.0004$, which does not shift significantly the Standard Model prediction ($R~{\rm SM}_b=0.2162$ for $m_t=160\GeV$). An improvement in experimental precision by a factor of four would be required to be sensitive to such an effect.We compute the supersymmetric contribution to $R_{b}\equiv \Gamma (Z\to b{\bar b})/\Gamma (Z\to {\rm hadrons})$ in a variety of supergravity models. We find $R^{\rm susy}_b\lsim0.0004$, which does not shift significantly the Standard Model prediction ($R^{\rm SM}_b=0.2162$ for $m_t=160\GeV$). An improvement in experimental precision by a factor of four would be required to be sensitive to such an effect.CERN-TH-7553-95CTP-TAMU-67-94ACT-24-94hep-ph/9501258CERN-TH.7553-95CERN-TH-7553-95ACT-1994-24CTP-TAMU-94-67oai:cds.cern.ch:2747601995-01-10 |
| spellingShingle | Particle Physics - Phenomenology Wang, Xu Lopez, Jorge L. Nanopoulos, Dimitri V. R$_{b}$ in supergravity models |
| title | R$_{b}$ in supergravity models |
| title_full | R$_{b}$ in supergravity models |
| title_fullStr | R$_{b}$ in supergravity models |
| title_full_unstemmed | R$_{b}$ in supergravity models |
| title_short | R$_{b}$ in supergravity models |
| title_sort | r$_{b}$ in supergravity models |
| topic | Particle Physics - Phenomenology |
| url | http://cds.cern.ch/record/274760 |
| work_keys_str_mv | AT wangxu rbinsupergravitymodels AT lopezjorgel rbinsupergravitymodels AT nanopoulosdimitriv rbinsupergravitymodels |