Sterile-active neutrino oscillations and shortcuts in the extra dimension -: art. no. 095017

被引：83

作者：

Päs, H

Pakvasa, S

Weiler, TJ

机构：

[1] Univ Hawaii Manoa, Dept Phys & Astron, Honolulu, HI 96822 USA

[2] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

来源：

PHYSICAL REVIEW D | 2005年 / 72卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.72.095017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss a possible new resonance in active-sterile neutrino oscillations arising in theories with large extra dimensions. Fluctuations in the brane effectively increase the path-length of active neutrinos relative to the path-length of sterile neutrinos through the extra-dimensional bulk. Well below the resonance, the standard oscillation formulas apply. Well above the resonance, active-sterile oscillations are suppressed. We show that a resonance energy in the range of 30-400 MeV allows an explanation of all neutrino oscillation data, including LSND data, in a consistent four-neutrino model. A high resonance energy implies an enhanced signal in MiniBooNE. A low resonance energy implies a distorted energy spectrum in LSND, and an enhanced nu(mu) depletion from a stopped-pion source. The numerical value of the resonance energy may be related back to the geometric aspects of the brane world. Some astrophysical and cosmological consequences of the brane-bulk resonance are briefly sketched.

引用

页数：11

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