CP violation searches with Neutrino Factories and Beta Beams Neutrinos in Particle, in Nuclear and in Astrophysics Trento, Italy November 20, 2008 Walter.

Slides:



Advertisements
Similar presentations
Precision Neutrino Oscillation Measurements & the Neutrino Factory Scoping Study for a Future Accelerator Neutrino Complex – Discussion Meeting Steve Geer,
Advertisements

TeV scale see-saws from higher than d=5 effective operators Neutrino masses and Lepton flavor violation at the LHC Würzburg, Germany November 25, 2009.
Near detectors and systematics IDS-NF plenary meeting at TIFR, Mumbai October 13, 2009 Walter Winter Universität Würzburg TexPoint fonts used in EMF: AAAAA.
Fourth Generation Leptons Linda Carpenter UC Irvine Dec 2010.
3+1 sterile Jacobo López–Pavón IFT UAM/CSIC NuFact IIT, Chicago, July
1 B s  J/  update Lifetime Difference & Mixing phase Avdhesh Chandra for the CDF and DØ collaborations Beauty 2006 University of Oxford, UK.
Phenomenology of  13  13 half-day meeting Oxford, UK September 24, 2007 Walter Winter Universität Würzburg.
How Will We See Leptonic CP Violation? D. Casper University of California, Irvine.
Beyond T2K and NOvA (… and reactor experiments) NuFact 06 UC Irvine, USA August 24, 2006 Walter Winter Universität Würzburg, Germany.
CP violation and mass hierarchy searches Neutrinos in particle physics and astrophysics (lecture) June 2009 Walter Winter Universität Würzburg TexPoint.
Discovery Potential for MSSM Higgs Bosons with ATLAS Johannes Haller (CERN) on behalf of the ATLAS collaboration International Europhysics Conference on.
Phenomenology of future LBL experiments … and the context with Euro WP6 IDS-NF + Euro plenary meeting at CERN March 25, 2009 Walter Winter Universität.
Neutrino phenomenology Lecture 2: Precision physics with neutrinos Winter school Schladming 2010 “Masses and constants” Walter Winter Universität.
Neutrino oscillation physics with superbeams and neutrino factories Nu HoRIzons workshop HRI, India February 13-15, 2008 Walter Winter Universität Würzburg.
Toyota National College of Technology A.Takamura Collaboration with K.Kimura and T.Yoshikawa GLoBES 2007 Measuring the Leptonic CP Phase in Oscillations.
Neutrino oscillations: Perspective of long-baseline experiments 522. Wilhelm and Else Heraeus-Seminar: Exploring the neutrino sky and fundamental particle.
Summary of WG1 – Phenomenological issues Osamu Yasuda (TMU)
Probing the Octant of  23 with very long baseline neutrino oscillation experiments G.-L. Lin National Chiao-Tung U. Taiwan CYCU Oct Work done.
Resolving neutrino parameter degeneracy 3rd International Workshop on a Far Detector in Korea for the J-PARC Neutrino Beam Sep. 30 and Oct , Univ.
Osamu Yasuda Tokyo Metropolitan University Model independent analysis of New Physics interactions and implications for long baseline experiments INTERNATIONAL.
Physics with a very long neutrino factory baseline IDS Meeting CERN March 30, 2007 Walter Winter Universität Würzburg.
New physics searches with near detectors at the Neutrino Factory MINSIS workshop UAM Madrid December 10-11, 2009 Walter Winter Universität Würzburg TexPoint.
Sterile Neutrino Oscillations and CP-Violation Implications for MiniBooNE NuFact’07 Okayama, Japan Georgia Karagiorgi, Columbia University August 10, 2007.
Dec. 13, 2001Yoshihisa OBAYASHI, Neutrino and Anti-Neutrino Cross Sections and CP Phase Measurement Yoshihisa OBAYASHI (KEK-IPNS) NuInt01,
CP violation and mass hierarchy searches with Neutrino Factories and Beta Beams NuGoa – Aspects of Neutrinos Goa, India April 10, 2009 Walter Winter Universität.
Beta beam scenarios … for neutrino oscillation physics Beta beam meeting Aachen, Germany October 31-November 1, 2007 Walter Winter Universität Würzburg.
Geographical issues and physics applications of “very long” neutrino factory baselines NuFact 05 June 23, 2005 Walter Winter Institute for Advanced Study,
Neutrino Factory and Beta Beam Experiment NO-VE 2006 Venice, Italy February 8, 2006 Walter Winter Institute for Advanced Study, Princeton.
Impact of large  13 on long- baseline measurements at PINGU PINGU Workshop Erlangen university May 5, 2012 Walter Winter Universität Würzburg TexPoint.
CP violation in the neutrino sector Lecture 3: Matter effects in neutrino oscillations, extrinsic CP violation Walter Winter Nikhef, Amsterdam,
If  13 is large, then what ? Hisakazu Minakata Tokyo Metropolitan University.
1 Neutrino Phenomenology Boris Kayser Scottish Summer School August 11,
Neutrino Factories Andrea Donini Instituto de Física Teórica/Instituto de Física Corpuscular CSIC European Strategy for Neutrino Oscillation Physics -
Neutrino factory physics reach … and impact of detector performance 2 nd ISS Meeting KEK, Tsukuba, Japan January 24, 2006 Walter Winter Institute for Advanced.
Optimization of a neutrino factory oscillation experiment 3 rd ISS Meeting Rutherford Appleton Laboratory, UK April 25-27, 2006 Walter Winter Institute.
Physics and Performance Evaluation Group NuFact 07 Okayama University, Japan August 6, 2007 Walter Winter Universität Würzburg for the executive committee:
Future precision neutrino experiments and their theoretical implications Matter to the deepest Ustron, Poland September 6, 2007 Walter Winter Universität.
Neutrino mass and DM direct detection Daijiro Suematsu (Kanazawa Univ.) Erice Sept., 2013 Based on the collaboration with S.Kashiwase PRD86 (2012)
Super Beams, Beta Beams and Neutrino Factories (a dangerous trip to Terra Incognita) J.J. Gómez-Cadenas IFIC/U. Valencia Original results presented in.
Contents of IDR: PPEG IDS-NF plenary meeting RAL, UK September 22-25, 2010 Walter Winter Universität Würzburg TexPoint fonts used in EMF: AAAAA A A A.
Measuring Earth Matter Density and Testing MSW Hisakazu Minakata Tokyo Metropolitan University.
Long baseline neutrino oscillations: Theoretical aspects NOW 2008 Conca Specchiulla, Italy September 9, 2008 Walter Winter Universität Würzburg TexPoint.
Future precision neutrino experiments and their theoretical Madrid, Spain November 22, 2007 Walter Winter Universität Würzburg.
NSI versus NU at the Neutrino Factory Euronu meeting Strasbourg June 2-4, 2010 Walter Winter Universität Würzburg TexPoint fonts used in EMF: AAAAA A A.
Optimizing the green-field beta beam NuFact 08 Valencia, Spain June 30-July 5, 2008 Walter Winter Universität Würzburg.
Optimization of a neutrino factory for non-standard neutrino interactions IDS plenary meeting RAL, United Kingdom January 16-17, 2008 Walter Winter Universität.
The quest for  13 : Parameter space and performance indicators Proton Driver General Meeting At Fermilab April 27, 2005 Walter Winter Institute for Advanced.
Near detectors for new physics searches IDS-NF plenary meeting at TIFR, Mumbai October 12, 2009 Walter Winter Universität Würzburg TexPoint fonts used.
Testing neutrino properties at the Neutrino Factory Astroparticle seminar INFN Torino December 3, 2009 Walter Winter Universität Würzburg TexPoint fonts.
PPEG plan for development of physics case for RDR IDS-NF plenary meeting October 19-21, 2011 Arlington, VA, USA Walter Winter Universität Würzburg TexPoint.
Optimization of a neutrino factory Discovery machine versus precision instrument NuFact 07 Okayama University, Japan August 6, 2007 Walter Winter Universität.
Sterile neutrinos at the Neutrino Factory IDS-NF plenary meeting October 19-21, 2011 Arlington, VA, USA Walter Winter Universität Würzburg TexPoint fonts.
Future neutrino oscillation experiments J.J. Gómez-Cadenas U. Valencia/KEK Original results presented in this talk based on work done in collaboration.
A monochromatic neutrino beam for  13 and  J. Bernabeu U. de Valencia and IFIC NO-VE III International Workshop on: "NEUTRINO OSCILLATIONS IN VENICE"
Systematic model building... based on QLC assumptions NuFact 07 Okayama University, Japan August 8, 2007 Walter Winter Universität Würzburg.
1 Summary of the session: Interplay between neutrino masses and other phenomenological signatures Tommy Ohlsson Department of Theoretical Physics, Royal.
Optimization of a neutrino factory for large  13 Golden 07 IFIC, Valencia June 28, 2007 Walter Winter Universität Würzburg.
Systematics at the Neutrino Factory … and the global context NuInt 2012 Rio de Janeiro, Brazil Oct , 2012 Walter Winter Universität Würzburg TexPoint.
Near Detector Tasks EuroNu Meeting, CERN 26 March 2009 Paul Soler.
Double beta decay and Leptogenesis International workshop on double beta decay searches Oct SNU Sin Kyu Kang (Seoul National University of.
1-2 Mass Degeneration in the Leptonic Sector Hiroyuki ISHIDA (Tohoku University) Collaboration with : Takeshi ARAKI (MISC) Ref ; T. Araki and H.I. arXiv.
A model for large non-standard interactions of neutrinos leading to the LMA-dark solution Yasaman Farzan IPM, Tehran.
NuGoa – Aspects of Neutrinos Goa, India April 10, Walter Winter
September 24, 2007 Walter Winter
IDS-NF + Euron plenary meeting at CERN March 25, Walter Winter
Physics and Performance Evaluation Group: Status and plans
High g Li/B b-Beam Enrique Fernández-Martínez, MPI für Physik Munich
Parameter Degeneracy in Neutrino Oscillations (and how to solve it?)
T2KK Sensitivity of Resolving q23 Octant Degeneracy
Double beta decay and Leptogenesis
Presentation transcript:

CP violation searches with Neutrino Factories and Beta Beams Neutrinos in Particle, in Nuclear and in Astrophysics Trento, Italy November 20, 2008 Walter Winter Universität Würzburg TexPoint fonts used in EMF: AAAAA A A A

2 Contents  Motivation from theory  CPV Phenomenology  CP precision measurement  CPV from non-standard physics  Summary

Motivation from theory

4 Where does CPV enter?  Example: Type I seesaw (heavy SM singlets N c ) Charged lepton mass terms Eff. neutrino mass terms Block-diag. CC Primary source of CPV (depends BSM theory) Effective source of CPV (only sectorial origin relevant) Observable CPV (completely model-indep.) Could also be type-II, III seesaw, radiative generation of neutrino mass, etc.

5  From the measurement point of view: It makes sense to discuss only observable CPV (because anything else is model-dependent!)  At high E (type I-seesaw): 9 (M R )+18 (M D )+18 (M l ) = 45 parameters  At low E: 6 (masses) + 3 (mixing angles) + 3 (phases) = 12 parameters Connection to measurement There is no specific connection between low- and high-E CPV! But: that‘s not true for special (restrictive) assumptions! CPV in 0  decay LBL accessible CPV:  If  U PMNS real  CP conserved Extremely difficult! (Pascoli, Petcov, Rodejohann, hep-ph/ )

6 Why is CPV interesting?  Leptogenesis: CPV from N c decays  If special assumptions (such as hier. M R, NH light neutrinos, …) it is possible that  CP is the only source of CPV for leptogensis! (N c ) i ~ M D (in basis where M l and M R diagonal) (Pascoli, Petcov, Riotto, hep-ph/ ) Different curves: different assumptions for  13, …

7 How well do we need to measure?  We need generic arguments Example: Parameter space scan for eff. 3x3 case (QLC-type assumptions, arbitrary phases, arbitrary M l ) The QLC-type assumptions lead to deviations O(  C ) ~ 13   Can also be seen in sum rules for certain assumptions, such as (  : model parameter)  This talk: Want Cabibbo-angle order precision for  CP ! (Niehage, Winter, arXiv: ) (arXiv: )

CPV phenomenology

9 Terminology  Any value of  CP (except for 0 and  ) violates CP  Sensitivity to CPV: Exclude CP-conserving solutions 0 and  for any choice of the other oscillation parameters in their allowed ranges

10 Measurement of CPV (Cervera et al. 2000; Freund, Huber, Lindner, 2000; Huber, Winter, 2003; Akhmedov et al, 2004)  Antineutrinos:  Magic baseline:  Silver:  Platinum, Superb.:

11 Degeneracies  CP asymmetry (vacuum) suggests the use of neutrinos and antineutrinos Burguet-Castell et al, 2001)  One discrete deg. remains in (  13,  )-plane (Burguet-Castell et al, 2001)  Additional degeneracies: (Barger, Marfatia, Whisnant, 2001)  Sign-degeneracy (Minakata, Nunokawa, 2001)  Octant degeneracy (Fogli, Lisi, 1996) Best-fit Antineutrinos Iso-probability curves Neutrinos

12 Intrinsic vs. extrinsic CPV  The dilemma: Strong matter effects (high E, long L), but Earth matter violates CP  Intrinsic CPV (  CP ) has to be disentangled from extrinsic CPV (from matter effects)  Example:  -transit Fake sign-solution crosses CP conserving solution  Typical ways out:  T-inverted channel? (e.g. beta beam+superbeam, platinum channel at NF, NF+SB)  Second (magic) baseline (Huber, Lindner, Winter, hep-ph/ ) NuFact, L=3000 km Fit True  CP (violates CP maximally) Degeneracy above 2  (excluded) True Critical range

13 CPV discovery reach … in (true) sin 2 2  13 and  CP Sensitive region as a function of true  13 and  CP  CP values now stacked for each  13 Read: If sin 2 2  13 =10 -3, we expect a discovery for 80% of all values of  CP No CPV discovery if  CP too close to 0 or  No CPV discovery for all values of  CP 33 Cabibbo-angle precision for  CP ~ 85%! Fraction 80% (3  ) corresponds to Cabibbo-angle precision at 2  BENCHMARK! Best performance close to max. CPV (  CP =  /2 or 3  /2)

14 CPV as a fct. of  13  General structure: Signal  Even without systematics (NC, mis-ID, …):  For sin 2 2  13 <<  2 ~  Lose sensitivity with sin 2  13  For sin 2 2  13 >~  2 ~  Sensitivity almost constant over wide range of  13

15  Small  13 : Optimize discovery reach in  13 direction  Large  13 : Optimize discovery reach in (true)  CP direction  What defines “small” vs “large  13 ”? A Double Chooz, Day Bay, T2K, … discovery? Optimization for CPV Optimization for small  13 Optimization for large  13

16 Large  13 strategy  Assume e.g. that Double Chooz discovers  13  Minimum wish list easy to define:  5  independent confirmation of  13 > 0  3  mass hierarchy determination for any (true)  CP  3  CP violation determination for 80% (true)  CP (~ 2  sensitvity to a Cabibbo angle-size CP violation) For any (true)  13 in 90% CL D-Chooz allowed range!  What is the minimal effort (minimal cost) for that?  NB: Such a minimum wish list is non-trivial for small  13 (arXiv: Sim. from hep-ph/ ; 1.5 yr far det yr both det.) (arXiv: ; Sim. from hep-ph/ ; 1.5 yr far det yr both det.)

17 More recent modifications:  Higher  (Burguet-Castell et al, hep-ph/ )  Different isotope pairs leading to higher neutrino energies (same  ) Beta beam concept … originally proposed for CERN ( )  Key figure (any beta beam): Useful ion decays/year?  Often used “standard values”: He decays/year Ne decays/year  Typical  ~ 100 – 150 (for CERN SPS) (CERN layout; Bouchez, Lindroos, Mezzetto, 2003; Lindroos, 2003; Mezzetto, 2003; Autin et al, 2003) (Zucchelli, 2002) (C. Rubbia, et al, 2006)

18 Example: Minimal beta beam  Minimal effort =  One baseline only  Minimal   Minimal luminosity  Any L (green-field!)  Example: Optimize L-  for fixed Lumi:  CPV constrains minimal    as large as 350 may not even be necessary! (see hep-ph/ )  CERN-SPS good enough? (arXiv: ) Sensitivity for entire Double Chooz allowed range! 5yr x Ne and 5yr x He useful decays

19 Example: low-E NuFact  A low-E NuFact performs similarly  Combination with platinum channel or superbeam may help (from: Huber, Winter, arXiv: ; also: Geer, Mena, Pascoli, hep-ph/ ; Bross et al, arXiv: ) Benchmark: 80% 33

20  Assume that Double Chooz … do not find  13  Example: Beta beam in  13 -direction (for max. CPV)  „Minimal effort“ is a matter of cost! Small  13 strategy Example: Beta beams (Huber et al, hep-ph/ )(Agarwalla et al, arXiv: ) 50 kt MID L=400 km LSF ~ 2 (LSF)

21 Neutrino factory: International design study IDS-NF:  Initiative from ~ to present a design report, schedule, cost estimate, risk assessment for a neutrino factory  In Europe: Close connection to „Euro us“ proposal within the FP 07  In the US: „Muon collider task force“ ISS (Geer, 1997; de Rujula, Gavela, Hernandez, 1998; Cervera et al, 2000) Signal prop. sin 2 2  13 Contamination Muons decay in straight sections of a storage ring

22 IDS-NF baseline setup 1.0  Two decay rings  E  =25 GeV  5x10 20 useful muon decays per baseline (both polarities!)  Two baselines: ~ km  Two MIND, 50kt each  Currently: MECC at shorter baseline (

23 CPV physics potential 33  Excellent  13, MH, CPV discovery reaches (IDS-NF, 2007)  Robust optimum for ~ km  Optimization even robust under non-standard physics (dashed curves) (Kopp, Ota, Winter, arXiv: )

24 Experiment comparison  The sensitivities are expected to lie somewhere between the limiting curves  Example: IDS- NF baseline (~ dashed curve) (ISS physics WG report, arXiv: , Fig. 105)

CP precision measurement

26  Theoretical example Large mixings from CL and sectors? Example:  23 l =  12  =  /4, perturbations from CL sector (can be connected with textures) (Niehage, Winter, arXiv: )  The value of  CP is interesting (even if there is no CPV)  Phenomenological example Staging scenarios: Build one baseline first, and then decide depending on the outcome  Is  CP in the „good“ (0 <  CP <  ) or „evil“ (  <  CP < 2  ) range? (signal for neutrinos ~ +sin  CP ) Why is that interesting?  12 l dominates  13 l dominates  12 ~  /4 +  13 cos  CP  12 ~  /4 –  13 cos  CP   13 > 0.1,  CP ~    13 > 0.1,  CP ~   23 ~  /4 – (  13 ) 2 /2  23 ~  /4 + (  13 ) 2 /2  CP and octant discriminate these examples!

27 Performance indicator: CP coverage  Problem:  CP is a phase (cyclic)  Define CP coverage (CPC): Allowed range for  CP which fits a chosen true value  Depends on true  13 and true  CP  Range: 0 < CPC <= 360   Small CPC limit: Precision of  CP  Large CPC limit: 360  - CPC is excluded range

28 CP pattern  Performance as a function of  CP (true)  Example: Staging. If km baseline operates first, one can use this information to determine if a second baseline is needed (Huber, Lindner, Winter, hep-ph/ ) Exclusion limitPrecision limit

CPV from non-standard physics?

30 ~ current bound CPV from non-standard interactions  Example: non-standard interactions (NSI) in matter from effective four-fermion interactions:  Discovery potential for NSI-CPV in neutrino propagation at the NF Even if there is no CPV in standard oscillations, we may find CPV! But what are the requirements for a model to predict such large NSI? (arXiv: ) 33 IDS-NF baseline 1.0

31 CPV discovery for large NSI  If both  13 and |  e  m | large, the change to discover any CPV will be even larger: For > 95% of arbitrary choices of the phases  NB: NSI-CPV can also affect the production/detection of neutrinos (Gonzalez-Garcia et al, hep-ph/ ; Fernandez-Martinez et al, hep-ph/ ; Altarelli, Meloni, ) (arXiv: ) IDS-NF baseline 1.0

32  Effective operator picture: Describes additions to the SM in a gauge-inv. way!  Example: NSI for TeV-scale new physics d=6: ~ (100 GeV/1 TeV) 2 ~ compared to the SM d=8: ~ (100 GeV/1 TeV) 4 ~ compared to the SM  Current bounds, such as from CLFV: one cannot construct large (= observable) leptonic matter NSI with d=6 operators (except for   m, maybe) (Bergmann, Grossman, Pierce, hep-ph/ ; Antusch, Baumann, Fernandez-Martinez, arXiv: ; Gavela, Hernandez, Ota, Winter,arXiv: )  Need d=8 effective operators!  Finding a model with large NSI is not trivial! Models for large NSI? mass d=6, 8, 10,...: NSI

33 Systematic analysis for d=8  Decompose all d=8 leptonic operators systematically  The bounds on individual operators from non- unitarity, EWPD, etc are very strong! (Antusch, Baumann, Fernandez-Martinez, arXiv: )  Need at least two mediator fields plus a number of cancellation conditions (Gavela, Hernandez, Ota, Winter, arXiv: ) Basis (Berezhiani, Rossi, 2001) Combine different basis elements C 1 LEH, C 3 LEH Cancel d=8 CLFV But these mediators cause d=6 effects  Additional cancellation condition (Buchmüller/Wyler – basis) Avoid CLFV at d=8: C 1 LEH =C 3 LEH Feynman diagrams

34 Summary  The Dirac phase  CP is probably the only realistically observable CP phase in the lepton sector  Maybe the only observable CPV evidence for leptogenesis  This and  1,  2 : the only completely model-inpendent parameterization of CPV  What precision do we want for it? Cabibbo-angle precision?  Relates to fraction of „  CP “ ~ 80-85%  The perspectives for a measurement are best if  13 is not too small and not too large  For a BB or NF, the experiment optimization/choice depends on  13 large or small  Other interesting aspects in connection with CPV: CP precision measurement, NSI-CPV

Backup

36 Minimal beta beam at the CERN-SPS? (  fixed to maximum at SPS) (arXiv: )

37 Appearance rates NF Golden-SB appearance-NF Platinum  E p chosen such that SB peaks at lower E  Platinum peaks at higher E (spectrum!) (Huber, Winter, 2007) useful muon decays Golden E  =5 GeV L=1250 km

38 Low-E Nufact optimization  Geer et al. choices are sufficiently close to optimum  NF-SB synergistic, better performance than NF alone  Our choices : L = 900 km, E  = 5 GeV and L=1250 km, E  =5 GeV (given the low energy ~ minimum effort constraint) CP fraction for discovery (3  ), sin 2 2  13 =0.1 (Huber, Winter, 2007) Double luminosity!

39

40 (Mats Lindroos)

41 (Mats Lindroos)