کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10725522 | 1034140 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ghost condensation and CPT violation in neutrino sector
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Motivated by the recent MINOS observation, Îm322â Îm¯322, we study CPT violation in neutrino sector caused by ghost condensation. As a concrete model, we consider an extra dimension model with two branes, which are spatially separated and communicate only through singlet 'messenger' fermion fields which contain right-handed neutrinos in the bulk. Assuming ghost condensation on one brane and localization of the standard model sector on the other brane, CPT violation occurs only in neutrino sector by Yukawa couplings with the messengers, which, at the same time, lead small neutrino masses. In the parameter space which is consistent with the MINOS observation suggests possible observation of the twinkling cosmic microwave background radiation and blinking light-ray from a quasar at a large distance, with a timescale about 0.1 day.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 696, Issue 5, 14 February 2011, Pages 505-508
Journal: Physics Letters B - Volume 696, Issue 5, 14 February 2011, Pages 505-508
نویسندگان
Shinji Mukohyama, Seong Chan Park,