Probing large extra dimensions with neutrinos

Apr, 1999
21 pages
Published in:
  • Nucl.Phys.B 563 (1999) 63-81
e-Print:
Report number:
  • NYU-TH-99-3-03

Citations per year

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Abstract:
We study implications of theories with sub-millimeter extra dimensions and Mf(110)M_f \sim (1 - 10) TeV scale quantum gravity for neutrino physics. In these theories, the left-handed neutrinos as well as other standard model (SM) particles, are localized on a brane embedded in the bulk of large extra space. Mixing of neutrinos with (SM) singlet fermions propagating in the bulk is naturally suppressed by the volume factor Mf/MP3101631015M_f/M_P \sim 3\cdot 10^{-16} - 3\cdot 10^{-15}, where MPM_P is the Planck mass. Properties of the neutrino oscillations and the resonance conversion to the bulk fermions are considered. We show that the resonance conversion of the electron neutrinos to the light bulk fermions can solve the solar neutrino problem. The signature of the solution is the peculiar distortion of the solar neutrino spectrum. The solution implies that the radius of at least one extra dimension should be in the range 0.06 - 0.1 mm {\it irrespective} of total number of extra dimensions. The corresponding modification of the Newtonian law is within the range of sensitivity of proposed sub-millimeter experiments, thus providing a verifiable link between neutrino physics and the gravity measurements.
Note:
  • LaTeX, 23 pages and 1 figure, slight revision of the manuscript, new discussion added, several formulas corrected Report-no: NYU-TH/99/3/03, IC/99/32
  • 11.10.Kk
  • 14.60.Lm
  • 14.60.St
  • Large extra dimensions
  • Solar neutrinos
  • quantum gravity
  • space-time: higher-dimensional
  • membrane model
  • neutrino: mass generation
  • neutrino: mixing angle