Comparing Solar and KamLAND Data

Comparing Solar and KamLAND Data ~ Carlos Pena Garay IAS, Princeton Neutrino Telescopes, Venice

Solar vs KamLAND Data

Solar vs KamLAND : Dm2 & q

MSW adiabatic vs Vacuum Osc.

Solar & KamLAND : Dm2 & q

KamLAND in rescue of Solar n Main effect due to KamLAND data : Improved Dm2 How well do we know solar neutrino fluxes from neutrino data + luminosity constraint? Bahcall, Gonzalez-Garcia, PG

KamLAND in rescue of Solar n Main effect due to KamLAND data: Improved Dm2 How well do we know solar neutrino fluxes from neutrino data + luminosity constraint? Bahcall, Gonzalez-Garcia, PG

Low Nu experiments : Total luminosity Solar + KamLAND neutrino data: How well do (will) we know solar neutrino fluxes ? 7Be,pp Bahcall, PG, JHEP (2003)

Solar in rescue of KamLAND n Main effect due to Solar data : Improved q12 • Amplitude of the Energy dependent signature • Bounds on other sources : geoneutrinos, supernovae Fiorentini Ianni et al, in progress

KamLAND + Solar : Determining MSW • Matter effects in KamLAND : negligible ( <0.5% rate ) • Dm2 determined by KamLAND in osc. phase • Matter effects in the Sun: • r0 bounded : present : 8B production < 0.23 RSUN • future : 0.05 RSUN : pep/low 8B • If GF is replaced by A GF : A=1 within 2 s • A=0 rejected >6s • Do we have other (practical) ways to measure MSW ? PG Fogli et al

KamLAND + Solar : Beyond MSW • Several speculative proposals: • Better fits, new allowed regions, bounds on new physics,… • Non-Standard Interactions • Sterile Neutrinos • CPT violation • Mass Varying Neutrinos • … Huber

Non-standard nt interactions (Majorana) What’s new : Lower region Sensitivity in KamLAND reactor Sensitivity in low energy solar neutrino experiments Friedland, Lunardini, PG (2004) Davidson et al (2002) Small flavor diagonal and flavor changing fermi interactions (~0.1GF ) with quarks LMA with modified matter effects Berezhiani, Rossi (2002)

Non-standard nt interactions (Dirac) What’s new : Lower region Sensitivity in KamLAND reactor Sensitivity in low energy solar neutrino experiments Friedland, Lunardini, PG (2004) Davidson et al (2002) Small flavor diagonal and flavor changing fermi interactions (~0.1GF ) with quarks LMA with modified matter effects

Sterile neutrinos How do solar data constraint oscillations to sterile n ? Bahcall, Gonzalez-Garcia, P-G, PRC66, 2002

Solar & KamLAND : Not assuming CPT conservation KamLAND best fit points which fit Solar & KamLAND data De Gouvea, PG

CPT bounds Murayama (2003) De Gouvea, PG (2004) Lorentz invariance + Hermiticity of the Hamiltonian + locality leads to CPT theorem in relativistic local QFT What about n ?

Summary 1. Solar & KamLAND : 2 independent sources ( n and n ) lead to LMA 2. a) KamLAND lead to solar improved flux determinations : CNO luminosity, total luminosity2. b) Solar data lead to improved extraction of other sources3. Goal : Determining MSW- solar tomography- Search for exotics : NSI, sterile, CPT, MVNs, …

The brightest neutrino source Ga Cl SK, SNO

Comparing Solar and KamLAND Data