کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1842638 | 1645166 | 2006 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
MSGUT: From bloom to doom
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موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
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چکیده انگلیسی
By a systematic survey of the parameter space we confirm our surmise [C.S. Aulakh, MSGUTs from germ to bloom: Towards falsifiability and beyond, hep-ph/0506291] that the Minimal Supersymmetric GUT (MSGUT) based on the 210â126â126¯â10 Higgs system is incompatible with the generic Type I and Type II seesaw mechanisms. The incompatibility of the Type II seesaw mechanism with this MSGUT is due to its generic extreme sub-dominance with respect to the Type I contribution. The Type I mechanism although dominant over Type II is itself unable to provide neutrino masses larger than â¼10â3eV anywhere in the parameter space. Our Renormalization Group based analysis shows the origin of these difficulties to lie in a conflict between baryon stability and neutrino oscillation. The MSGUT completed with a 120-plet Higgs is the natural next to minimal candidate. We propose a scenario where the 120-plet collaborates with the 10-plet to fit the charged fermion masses. The freed 120-plet couplings can then give sub-dominant contributions to charged fermion masses and enhance the Type I seesaw masses sufficiently to provide a viable seesaw mechanism. We give formulae required to verify this scenario.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 757, Issues 1â2, 20 November 2006, Pages 47-78
Journal: Nuclear Physics B - Volume 757, Issues 1â2, 20 November 2006, Pages 47-78
نویسندگان
Charanjit Singh Aulakh, Sumit Kumar Garg,