Abstract
Motivated by the recent MINOS observation, Δm322≠Δm̄322, 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.
| Original language | English |
|---|---|
| Pages (from-to) | 505-508 |
| Number of pages | 4 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 696 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2011 Feb 14 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
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Ghost condensation and CPT violation in neutrino sector. / Mukohyama, Shinji; Park, Seong Chan.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 696, No. 5, 14.02.2011, p. 505-508.Research output: Contribution to journal › Article
TY - JOUR
T1 - Ghost condensation and CPT violation in neutrino sector
AU - Mukohyama, Shinji
AU - Park, Seong Chan
PY - 2011/2/14
Y1 - 2011/2/14
N2 - Motivated by the recent MINOS observation, Δm322≠Δm̄322, 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.
AB - Motivated by the recent MINOS observation, Δm322≠Δm̄322, 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.
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U2 - 10.1016/j.physletb.2011.01.014
DO - 10.1016/j.physletb.2011.01.014
M3 - Article
AN - SCOPUS:79251594389
VL - 696
SP - 505
EP - 508
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 5
ER -