تقرير
On Lepton-Number-Violating Searches for Muon to Positron Conversion
| العنوان: | On Lepton-Number-Violating Searches for Muon to Positron Conversion |
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| المؤلفون: | Berryman, Jeffrey M., de Gouvêa, André, Kelly, Kevin J., Kobach, Andrew |
| المصدر: | Phys. Rev. D 95, 115010 (2017) |
| سنة النشر: | 2016 |
| المجموعة: | High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology |
| الوصف: | There is no guarantee that the violation of lepton number, assuming it exists, will primarily manifest itself in neutrinoless double beta decay ($0\nu\beta\beta$). Lepton-number violation and lepton-flavor violation may be related, and much-needed information regarding the physics that violates lepton number can be learned by exploring observables that violate lepton flavors other than electron flavor. One of the most promising observables is $\mu^- \rightarrow e^+$ conversion, which can be explored by experiments that are specifically designed to search for $\mu^- \rightarrow e^-$ conversion. We survey lepton-number-violating dimension-five, -seven, and -nine effective operators in the standard model and discuss the relationships between Majorana neutrino masses and the rates for $0\nu\beta\beta$ and $\mu^- \rightarrow e^+$ conversion. While $0\nu\beta\beta$ has the greatest sensitivity to new ultraviolet energy scales, its rate might be suppressed by the new physics relationship to lepton flavor, and $\mu^- \rightarrow e^+$ conversion offers a complementary probe of lepton-number-violating physics. Comment: 13 pages, 7 figures; updated to include modified results for two operators and additional references |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.95.115010 |
| URL الوصول: | http://arxiv.org/abs/1611.00032 |
| رقم الأكسشن: | edsarx.1611.00032 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.95.115010 |
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