APS%20Neutrino%20Study:%20Reactor%20Working%20Group

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Beyond q13
Gabriela Barenboim
APS Neutrino Study Reactor Working Group
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We have just closed
annus mirabilis

• K2K Indication of neutrino oscillations in a
  250 km
• First Results from KamLAND Evidence for
  Reactor
• Nobel Prize award to R. Davis Jr. and M. Koshiba
• WMAP First year Wilkinson microwave anysotropy
  probe observations determination of
  cosmological parameters
• Precise measurements of the solar neutrino D/N
  and seasonal variations in Super-Kamiokande
• SNO salt phase results Measurements of the
  Total
• Sloan Digital Sky Survey Cosmological
  parameters

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It is indeed a gift
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Let's not blow it !!
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The evidence
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We obtained
Dm223 (1.3 3.0) 10-3 eV2 sin2 (2 q23) gt .9
atmospheric
Dm212 (5.8 8.4) 10-5 eV2 tan2 (q12) lt .52
solar
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The next step

• the mass hierarchy
• the connecting angle q13
• the CP violating phase d

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Is there any physics beyond q13 ?
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Yes !!!!

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Yes !!!!
Measure or bound neutrino magnetic moment

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Yes !!!!
Measure or bound neutrino magnetic moment Search
for oscillation effects of sterile neutrinos

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Yes !!!!
Measure or bound neutrino magnetic moment Search
for oscillation effects of sterile neutrinos
Measure sin2 qw (check NuTeV result)

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Yes !!!!
Measure or bound neutrino magnetic moment Search
for oscillation effects of sterile neutrinos
Measure sin2 qw (check NuTeV result) FINeSE
at a reactor ?

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Yes !!!!
Measure or bound neutrino magnetic moment Search
for oscillation effects of sterile neutrinos
Measure sin2 qw (check NuTeV result) FINeSE
at a reactor ? Anything interesting about
structure functions ?

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Yes !!!!
Measure or bound neutrino magnetic moment Search
for oscillation effects of sterile neutrinos
Measure sin2 qw (check NuTeV result) FINeSE
at a reactor ? Anything interesting about
structure functions ? What about supernovas ?

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Yes !!!!
Measure or bound neutrino magnetic moment Search
for oscillation effects of sterile neutrinos
Measure sin2 qw (check NuTeV result) FINeSE
at a reactor ? Anything interesting about
structure functions ? What about supernovas ? CPT
tests (reactor vs solar neutrinos)

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WE KNOW "FOR SURE" THAT CPT
IS VIOLATED IN NATURE !!!
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WE KNOW "FOR SURE" THAT CPT
IS VIOLATED IN NATURE !!!
We have measured a cosmological constant that is
different from zero
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Beware of CPT !
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To keep in mind

• Low Homestake rate ?
• Absence of the upturn of the spectrum ?

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SNO Spectrum ?
Turn down at low energies ?
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To keep in mind

• Low Homestake rate ?
• Absence of the upturn of the spectrum ?

Next KamLAND data release still some shift in
Dm2 is not excluded.
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There is a rich non-q13 program which might help
make the q13 program happen.
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• Measure or bound neutrino magnetic moment
• Search for oscillation effects of sterile
  neutrinos
• Measure sin2 qw (check NuTeV result)
• FINeSE at a reactor ?
• Anything interesting about structure functions ?
• What about supernovas ?
• CPT tests (reactor vs solar neutrinos)

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Let's not sit on it !