Branching ratio estimates of τ− → π−η(′)ντ decays
We study the rare τ− → π−η(′)ντ decays. These processes occur via isospin violation and belong to the so-called second-class currents unseen in Nature so far. Our analysis is based on the framework of resonance chiral theory supplemented by dispersion relations. In this contribution we discuss the p...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2017-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://doi.org/10.1051/epjconf/201713713005 |
| _version_ | 1819133826717188096 |
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| author | Escribano Rafel Gonzàlez-Solís Sergi |
| author_facet | Escribano Rafel Gonzàlez-Solís Sergi |
| author_sort | Escribano Rafel |
| collection | DOAJ |
| description | We study the rare τ− → π−η(′)ντ decays. These processes occur via isospin violation and belong to the so-called second-class currents unseen in Nature so far. Our analysis is based on the framework of resonance chiral theory supplemented by dispersion relations. In this contribution we discuss the prospects for their discovery at forthcoming B-factories such Belle-II. While we find a total branching fraction for the π−η decay mode of ~1.7 × 10−5, well within the reach of Belle-II, the π−η′ channel might be one or two orders of magnitude more suppressed. |
| first_indexed | 2024-12-22T09:53:28Z |
| format | Article |
| id | doaj.art-a7008fadda684b1bbd82bd68e26bb330 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-22T09:53:28Z |
| publishDate | 2017-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-a7008fadda684b1bbd82bd68e26bb3302022-12-21T18:30:20ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011371300510.1051/epjconf/201713713005epjconf_conf2017_13005Branching ratio estimates of τ− → π−η(′)ντ decaysEscribano RafelGonzàlez-Solís Sergi0Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology (BIST), Campus UABWe study the rare τ− → π−η(′)ντ decays. These processes occur via isospin violation and belong to the so-called second-class currents unseen in Nature so far. Our analysis is based on the framework of resonance chiral theory supplemented by dispersion relations. In this contribution we discuss the prospects for their discovery at forthcoming B-factories such Belle-II. While we find a total branching fraction for the π−η decay mode of ~1.7 × 10−5, well within the reach of Belle-II, the π−η′ channel might be one or two orders of magnitude more suppressed.https://doi.org/10.1051/epjconf/201713713005 |
| spellingShingle | Escribano Rafel Gonzàlez-Solís Sergi Branching ratio estimates of τ− → π−η(′)ντ decays EPJ Web of Conferences |
| title | Branching ratio estimates of τ− → π−η(′)ντ decays |
| title_full | Branching ratio estimates of τ− → π−η(′)ντ decays |
| title_fullStr | Branching ratio estimates of τ− → π−η(′)ντ decays |
| title_full_unstemmed | Branching ratio estimates of τ− → π−η(′)ντ decays |
| title_short | Branching ratio estimates of τ− → π−η(′)ντ decays |
| title_sort | branching ratio estimates of τ π η ντ decays |
| url | https://doi.org/10.1051/epjconf/201713713005 |
| work_keys_str_mv | AT escribanorafel branchingratioestimatesoftpēntdecays AT gonzalezsolissergi branchingratioestimatesoftpēntdecays |