کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10722015 | 1033676 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Neutrino masses from loop-induced d⩾7 operators
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Neutrino masses from loop-induced d⩾7 operators Neutrino masses from loop-induced d⩾7 operators](/preview/png/10722015.png)
چکیده انگلیسی
We propose a new scenario where neutrino masses are generated via operators with the mass dimension higher than five, which are induced at the loop level. The scenario is demonstrated with concrete models where neutrino masses are generated via a one-loop dimension-seven operator which is induced through TeV scale dynamics under the exact Z2 symmetry. Tiny neutrino masses are naturally induced from the TeV scale dynamics without introducing any artificial assumption on magnitudes of coupling constants. The combination of one-loop factor 1/(4Ï)2 and the factor of the ratio (v/Î)2 between the electroweak scale v and new physics scale Î provides sufficient suppression as compared to the model based on the dimension-five operator induced at the tree level. The reproduction of the data for neutrino masses and mixings are discussed under the constraint from experiments for lepton flavour violation. We also mention phenomenological implications at collider experiments and dark matter candidates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 694, Issue 3, 8 November 2010, Pages 233-237
Journal: Physics Letters B - Volume 694, Issue 3, 8 November 2010, Pages 233-237
نویسندگان
Shinya Kanemura, Toshihiko Ota,