کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1843436 1527763 2010 27 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
SU(5) orientifolds, Yukawa couplings, stringy instantons and proton decay
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
SU(5) orientifolds, Yukawa couplings, stringy instantons and proton decay
چکیده انگلیسی
We construct a large class of SU(5) orientifold vacua with tadpole cancellation both for the standard and the flipped case. We give a general analysis of superpotential couplings up to quartic order in orientifold vacua and identify the properties of needed Yukawa couplings as well as the baryon number violating couplings. We point out that successful generation of the perturbatively forbidden Yukawa couplings entails a generically disastrous rate for proton decay from an associated quartic term in the superpotential, generated from the same instanton effects. We search for the appropriate instanton effects that generate the missing Yukawa couplings in the SU(5) vacua we constructed and find them in a small subset of them.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 829, Issues 1–2, 11 April 2010, Pages 298-324
نویسندگان
, , ,