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Status of the Unitarity Triangle Analysis
We present an update of the Unitarity Triangle (UT) analysis, within the Standard Model (SM) and beyond. Within the SM the main novelties are the inclusion in epsilon_K of the contributions of xi and phi_epsilon \neq \pi/4 pointed out by A.J. Buras and D. Guadagnoli, and an accurate prediction of BR...
| Autores principales: | , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2009
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.22323/1.084.0160 http://cds.cern.ch/record/1209509 |
| _version_ | 1780917984178470912 |
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| author | Bona, M. Pierini, M. Ciuchini, M. Franco, E. Silvestrini, L. Lubicz, V. Tarantino, Cecilia Martinelli, G. Parodi, F. Schiavi, C. Sordini, V. Stocchi, A. Vagnoni, V. |
| author_facet | Bona, M. Pierini, M. Ciuchini, M. Franco, E. Silvestrini, L. Lubicz, V. Tarantino, Cecilia Martinelli, G. Parodi, F. Schiavi, C. Sordini, V. Stocchi, A. Vagnoni, V. |
| author_sort | Bona, M. |
| collection | CERN |
| description | We present an update of the Unitarity Triangle (UT) analysis, within the Standard Model (SM) and beyond. Within the SM the main novelties are the inclusion in epsilon_K of the contributions of xi and phi_epsilon \neq \pi/4 pointed out by A.J. Buras and D. Guadagnoli, and an accurate prediction of BR(B -> tau nu), by using the indirect determination of |V_ub| from the UT fit, which can be compared to the present experimental result. In the generalization of the UT analysis to investigate New Physics (NP) effects, the estimate of xi is more delicate and only the effect of phi_epsilon \neq \pi/4 has been included. We confirm an hint of NP in the B_s-\bar B_s mixing at the 2.9 sigma level, which makes a comparison with new experimental data certainly desired. |
| id | cern-1209509 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2009 |
| record_format | invenio |
| spelling | cern-12095092023-03-14T20:31:21Zdoi:10.22323/1.084.0160http://cds.cern.ch/record/1209509engBona, M.Pierini, M.Ciuchini, M.Franco, E.Silvestrini, L.Lubicz, V.Tarantino, CeciliaMartinelli, G.Parodi, F.Schiavi, C.Sordini, V.Stocchi, A.Vagnoni, V.Status of the Unitarity Triangle AnalysisParticle Physics - PhenomenologyWe present an update of the Unitarity Triangle (UT) analysis, within the Standard Model (SM) and beyond. Within the SM the main novelties are the inclusion in epsilon_K of the contributions of xi and phi_epsilon \neq \pi/4 pointed out by A.J. Buras and D. Guadagnoli, and an accurate prediction of BR(B -> tau nu), by using the indirect determination of |V_ub| from the UT fit, which can be compared to the present experimental result. In the generalization of the UT analysis to investigate New Physics (NP) effects, the estimate of xi is more delicate and only the effect of phi_epsilon \neq \pi/4 has been included. We confirm an hint of NP in the B_s-\bar B_s mixing at the 2.9 sigma level, which makes a comparison with new experimental data certainly desired.arXiv:0909.5065oai:cds.cern.ch:12095092009-09-29 |
| spellingShingle | Particle Physics - Phenomenology Bona, M. Pierini, M. Ciuchini, M. Franco, E. Silvestrini, L. Lubicz, V. Tarantino, Cecilia Martinelli, G. Parodi, F. Schiavi, C. Sordini, V. Stocchi, A. Vagnoni, V. Status of the Unitarity Triangle Analysis |
| title | Status of the Unitarity Triangle Analysis |
| title_full | Status of the Unitarity Triangle Analysis |
| title_fullStr | Status of the Unitarity Triangle Analysis |
| title_full_unstemmed | Status of the Unitarity Triangle Analysis |
| title_short | Status of the Unitarity Triangle Analysis |
| title_sort | status of the unitarity triangle analysis |
| topic | Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.22323/1.084.0160 http://cds.cern.ch/record/1209509 |
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