13 and CP-Violation in the Lepton Sector SEESAW25 Institut Henri Poincar, Paris Caren Hagner Universitt Hamburg SEESAW25 Institut Henri Poincar, Paris Caren Hagner Universitt Hamburg (the experimental situation) SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Neutrino Mixing solar, Kamland 12 23 atmospheric, K2K 13, ?? CHOOZ If Majorana: 2 additional CP-phases (not observable in oscillations, maybe in 0v) If Majorana: 2 additional CP-phases (not observable in oscillations, maybe in 0v) SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg (Near Future) Methods to measure 13 Search for appearance of v e in v (super) beams (subdominant oscillation at atmospheric oscill. scale) Search for disappearance of anti-v e at reactors (subdominant oscillation at atmospheric oscill. scale) Search for appearance of v e in v (super) beams (subdominant oscillation at atmospheric oscill. scale) Search for disappearance of anti-v e at reactors (subdominant oscillation at atmospheric oscill. scale) Medium/long term Search for appearance of v in v e beta-beams Neutrino factory Search for appearance of v in v e beta-beams Neutrino factory SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg 3 Flavor Transition Probabilities with ()() (anti-v) LBL neutrino beams (in vacuum, on atmospheric osc. scale) precision on 23 and m 2 31 13, CP, mass hierarchy but degeneracies & correlations! Reactor experiments clean measurement of 13 from Huber, Lindner, Rolinec, Schwetz, Winter hep-ph/ e e (disappearance experiment) M. Apollonio et. al., Eur.Phys.J. C27 (2003) Best Limit on 13 from CHOOZ for m 2 atm = 210 -3 eV 2 sin 2 2 13 < 0.2 (90% C.L) for m 2 atm = 210 -3 eV 2 sin 2 2 13 < 0.2 (90% C.L) P th = 8.5 GW th, L = 1,1 km, M = 5t overburden: 300 mwe Target: 5t Gd loaded (0.09%) Scintillator SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg CHOOZ Systematic error (major sources): reactor uncertainties (2%) detector efficiency (1.5%) number of protons in liquid (0.8%) Systematic error (major sources): reactor uncertainties (2%) detector efficiency (1.5%) number of protons in liquid (0.8%) SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Neutrino Parameters: Global Fits ParameterBest-fit value Range (3) m eV 2 (5.4 9.5) eV 2 |m 2 31 | 2.6 eV 2 (1.5 3.7) eV 2 12 (sin 2 12 ) 33.2 o (0.30) 28.6 o 38.6 o 23 (sin 2 23 ) 46.1 o (0.52) 33.8 o 58.1 o 13 (sin 2 13 ) 4.4 o (0.006) 0 o 13.4 o (< 0.054) CP - 0 2 ParameterBest-fit value Range (3) m eV 2 (5.4 9.5) eV 2 |m 2 31 | 2.6 eV 2 (1.5 3.7) eV 2 12 (sin 2 12 ) 33.2 o (0.30) 28.6 o 38.6 o 23 (sin 2 23 ) 46.1 o (0.52) 33.8 o 58.1 o 13 (sin 2 13 ) 4.4 o (0.006) 0 o 13.4 o (< 0.054) CP - 0 2 Global fit including solar, atmospheric, reactor (Kamland and CHOOZ) and accelerator (K2K) data. M. Maltoni, T.Schwetz, A.M.Tortola, J.W.F.Valle, Phys. Rev. D68 (2003) , hep-ph/ Global fit including solar, atmospheric, reactor (Kamland and CHOOZ) and accelerator (K2K) data. M. Maltoni, T.Schwetz, A.M.Tortola, J.W.F.Valle, Phys. Rev. D68 (2003) , hep-ph/ Fixing m 2 atm = 2 eV 2 they obtain at 90%C.L. (3): sin 2 13 (0.066) sin 2 2 13 0.14 (0.25) SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Overview: Experiments T2K NOVA from Huber, Lindner, Rolinec, Schwetz, Winter hep-ph/ Starting 2009 Starting SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg CNGS Neutrino Beam Cern to Gran Sasso: 732km, = 17GeV Possible channels: v v T appearance v v disappearance v v e appearance Possible channels: v v T appearance v v disappearance v v e appearance sin 2 2 13 SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg OPERA: Sensitivity to or 7 o Fitting simultaneously E e, miss. p T, E vis method: v e appearance in v beam ( e = 0.7) background: e from decay, v e beam contamination, v CC events with missing muon (+ another track mimicking e), v NC events with neutral pions SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg OPERA: Time Schedule Nov 2003: SM1 magnet RPC installation (ok) Sep 2004: SM1 target installation Jan 2005: BAM and BMS installation July 2005: start filling bricks May 2006: start neutrino beam Nov 2003: SM1 magnet RPC installation (ok) Sep 2004: SM1 target installation Jan 2005: BAM and BMS installation July 2005: start filling bricks May 2006: start neutrino beam SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg MINOS Initial conditions: LE option below threshold (3.1GeV) 2.510 20 pot/year New request to Fermilab: 2510 20 pot in 5 years SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg MINOS: How to measure 13 + near detector far detector at Soudan Mine: steel & scintillator tracking calorimeter target mass: 5.4 ktons signal: v e appearance in v beam ( e = 0.28) background: e from decay (after v v ), v e beam contamination (~ 1%), v CC events with missing muon (+ another track mimicking e), v NC events with neutral pions signal: v e appearance in v beam ( e = 0.28) background: e from decay (after v v ), v e beam contamination (~ 1%), v CC events with missing muon (+ another track mimicking e), v NC events with neutral pions SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg MINOS: Time Schedule far detector completed in july 2003 now taking atmospheric neutrino data near detector installation has started beam commissioning starts Dec physics running starts in April 2005 goal in first year: 2.510 20 pot far detector completed in july 2003 now taking atmospheric neutrino data near detector installation has started beam commissioning starts Dec physics running starts in April 2005 goal in first year: 2.510 20 pot SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Comparison MINOS, ICARUS, OPERA from Huber, Lindner, Rolinec, Schwetz, Winter hep-ph/ SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Comparison MINOS, ICARUS, OPERA from Huber, Lindner, Rolinec, Schwetz, Winter hep-ph/ SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg comparision continued from Huber, Lindner, Rolinec, Schwetz, Winter hep-ph/ After 5 years running (90% C.L.) all combined: sin 2 2 13 0.06 (90%CL) SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Dependence on m 2 21 SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg J-PARC Neutrino Facility approved on Dec construction from (JFY) beam line and near 280m (without 2km detector) start experiment in 2009 approved on Dec construction from (JFY) beam line and near 280m (without 2km detector) start experiment in 2009 Off-axis beam: 1,2,3 o tuned to osc.maximum T2K: T2K: Sensitivity to 13 SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Numi Off-Axis Experiment: NOVA (L = 820km) Off-axis beam neutrino energy SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg NUMI Off-Axis: Detectors on the surface target mass ~ 50ktons active material: scintillator or RPC passive material: particle board on the surface target mass ~ 50ktons active material: scintillator or RPC passive material: particle board RPC detector Scintillator detector SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg NUMI Off-Axis: Identification of v e v e event v event SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg NUMI Off-Axis: Sensitivity to 13 Time Schedule: R&D proposal submitted full proposal now start construction Oct06 data taking with 25% of detector in 2008 Time Schedule: R&D proposal submitted full proposal now start construction Oct06 data taking with 25% of detector in 2008 SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Reactor Neutrino Experiments Europe: Double CHOOZ US: Diablo Canyon, Braidwood, China, Brazil Japan: KASKA Europe: Double CHOOZ US: Diablo Canyon, Braidwood, China, Brazil Japan: KASKA Idea: similar to CHOOZ reactor experiment, but use near and far detector to reduce systematic error SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Near detector 5-30 tons > 50 mwe Near detector 5-30 tons > 50 mwe Far detector 5-30 tons > 200 mwe Far detector 5-30 tons > 200 mwe D 1 = 0-1 km D 2 = 1-2 km e e, , Isotrope e flux (uranium & plutonium fission fragments) Detection tag : e + p e + + n, ~ 4 MeV, Threshold ~1.8 MeV Disappearance experiment: suppression+shape distorsion between the 2 detectors 2 IDENTICAL detectors (CHOOZ, KamLAND, BOREXINO/CTF type) Minimize the uncertainties on reactor flux & spectrum (2 % in CHOOZ) Cancel cross section uncertainty (1.9 %) Challenge: relative normalisation between the two detectors < 1% ! Reactor Neutrino Experiments: Method near atm. oscill. maximum SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Reactor Experiments: Sites SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Near site: D~ m, overburden mwe Far site: D~1.1 km, overburden 300 mwe TypePWR Cores2 Power8.4 GW th Couplage1996/1997 (%, in to 2000)66, 57 ConstructeurFramatome OprateurEDF Chooz-Far Chooz-Near Double CHOOZ Th. Lasserre m 1050 m 12.7 m 3 SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Far Detector Non-scintillating buffer: scintillateur+quencher DMP (r+0.95m,, V=100 m 3 ) -catcher: 80% dodcane + 20% PXE (r+0,6m V= 28,1 m 3 ) 7 m - target: 80% dodcane + 20% PXE + 0.1% Gd (r=1,2m, h = 2,8m, 12,7 m 3 ) Th. Lasserre Use existing CHOOZ hall again! SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Double-CHOOZ Signal SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Sensitivity for 13 : Comparison reactor experiment of D - CHOOZ size: sin 2 2 13 (90%CL) at 90% CL from Huber, Lindner, Rolinec, Schwetz, Winter hep-ph/ SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Dependence on m 2 31 SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg What can we learn about ? if 13 is round the corner (sin 2 2 13 = 0.1) Complementarity of accelerator and reactor experiments is very important! SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Concluding Overview from Huber, Lindner, Rolinec, Schwetz, Winter hep-ph/ SEESAW25, Paris 10 Juin 2004 Caren Hagner Universitt Hamburg Ende