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J W F ValleIFIC/CSIC – U Valencia
Neutrinos and dark matter
DSU, Beijing, Sept. 2011
http://astroparticles.es/
The SM picture of 3 generations of fermions interacting by SU3XSU2XU1 gauge boson exchange needs amendment due to
Do these have a common origin?
Yes they may …
- discovery of neutrino oscillations
- evidence for dark matter
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Schechter & JV PRD22 (1980) 2227 & PDG
LEPTON MIXING MATRIX
adopted in oscillation analyses
Presence of phases intrinsic to majorana nature of neutrinos (cf KM) Do not affect (standard) oscillations but Crucial to describe L-violating processes (in general also non-standard CC & NC, which may induce NSI & LFV effects)
Rodejohann, JV arXiv:1108.3484
44
Schwetz et al ArXiv:1108.1376 (NJP) & NJP 13 (2011) 063004
Homestake, SAGEGALLEX/GNO, SK-IIISNO-leta, SSMBorexinoKamLAND (180 Km)
K2K (250 Km), T2KMINOS (735 Km)
SK-III
NEUTRINO OSCILLATIONS STATUS 2011
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NEUTRINO OSCILLATIONS
STATUS 2011 Schwetz et al,
ArXiv:1108.1376 (NJP in press)New J.Phys. 13 (2011) 063004
see also reviews Maltoni et al, NJP 6 (2004) 122, Schwetz et al, NJP 10 (2008) 113011, Fogli et al 2006, Gonzalez-Garcia et al
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scale
mechanismSchechter-Valle 80/82
Minkowski 77 Gellman Ramond Slansky 80 Glashow, Yanagida 79 Mohapatra Senjanovic 80 Schechter-Valle, 80 & 82 Lazarides Shafi Weterrich 81
flavor structureLOW-SCALE SEESAW Mohapatra-Valle 86
fermion exchange
TYPE I
Scalar-exchange TYPE II
ORIGIN OF NEUTRINO MASS & SEESAW
77
CHARGED LEPTONS NEUTRINOS
Sectors are separatedSectors are separatedby an extra Abelian Znby an extra Abelian Zn
Babu et al PLB552 (2003) 207Hirsch et al PRD69 (2004) 093006 A4
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NON-ABELIAN FLAVOR SYMMETRIESNON-ABELIAN FLAVOR SYMMETRIES
Babu, Ma, Valle PLB552 (2003) Altarelli, Feruglio NPB72 (2005) Hirsch, Morisi, Valle PRD78 & D79(2008) & PLB679 (2009) 454 Hagedorn, Molinaro, Petcov (2009) Ibanez, Morisi, Valle, PRD80 (2009)
Lam PRL101Bazzocchi, Morisi, PRD80
Feruglio, Hagedorn, Lin, Merlo (2007) Carr, Frampton (2007)Aranda, Carone, Lebed PLB474
Grimus, Lavoura, JHEP0904Mohapatra, Nasri, Yu, PLB627Mondragón, Mondragón, Peinado
Medeiros, King, Ross PLB648
Ishimori,Kobayashi,Ohki,Okada,Shimizu&Tanimoto arXiv:1003.3552
A4
S3
S4
T'
D27....
NH VERSUS IH
Hirsch et al, PLB679:454 (2009)
TESTING NEUTRINO SPECTRA WITH DBD
Flavor sensitivity
• SBD & Cosmology …
1010
PRD78:093007 (2008)
PRL 99 (2007) 151802, PRD82 (2010) 073008
PRD72, 091301 (2005)
A4
FLAVOR SYMMETRY & DBD
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0-nu DBD MAJORANA
The significance of Neutrino-less Double Beta Decay
neutrinos may be relevant
for DM
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Dark matter-connection
131313
Neutrinos masses may change the SUSY spectrum : e.g. in inverse seesaw one may have SNEUTRINO-like DMArina & al PRL101 (2008) 161802Bazzocchi, Cerdeno, Munoz, J.V., PRD81:051701,2010
DM STABILIZED BY FLAVOUR SYM. EXPLAINS NEUTRINO MIXING
BROKEN TO Z2 SYMMETRY
DIRECT DM DETECTION
Majoron decaying dark matter Berezinsky et al PLB318 (1993) 360, PRD57( 1998) 147
Consistency with CMB Lattanzi & Valle, PRL99 (2007) 121301Lattanzi & Valle, PRL99 (2007) 121301
Gravity DM not strictly stableColeman 88, Kallosh, Linde, Susskind, Nelson, Seiberg, ...
161616
Esteves et al, PRD 82, 073008 (2010)
TYPE-II SEESAW MAJORON DECAYING-DM
extend to higher DM mass
LSS simulations
Bazzocchi & al JCAP 0808 (2008) 013 XENIA arXiv:0906.1788Bazzocchi & al JCAP 0808 (2008) 013 XENIA arXiv:0906.1788 16
171717
sneutrino
Masiero & Valle, PLB251 (1990) 273Bhattacharyya & Pal, PRD82 (2010) 055013
Diaz et al PRD68 (2003) 013009, PRD62 (2000) 113008 PRD65 (2002) 119901; PRD61 (2000) 071703
sneutrino
Hall & Suzuki, Ross & JV 85, Ellis et al, 85, Santamaria JV, ...
SUSYATM SCALESUSY-SEESAW
SOLAR SCALERADIATIVE
SUSY ORIGIN OF NU-MASS
IF GRAVITINO, CAN ACT AS DM
Variant models: munu-MSSM (Muñoz)
Gravitino LSP as a decaying dark matterdecays suppressed by Planck mass & smallness of m-nu/RPV
BRpV chosen consistent with neutrino osc. data
excluded by gamma-line searches: Egret & Fermi-LAT
Band consistent with
Susy searches
Restrepo et al1109.0512
Vertongen & Weniger
Restrepo , Taoso, JV, Zapata 1109.0512
ALLOWED by gravitino relic abundance, Fermi constraints, neutrino physics, collider bounds
202020
neutralino NLSP decays dominantly through RpV channels
De Campos et al PRD82 (2010) 075002JHEP 0805:048, 2008.
PROBING AT LHC
NEUTRINOS – DARK MASS CONNECTION - sneutrino-like DM in inverse seesaw - DM stabilized by neutrino flavor symmetry
- majoron as Decaying DARK MATTER - gravitino as Decaying DARK MATTER in BRPV
OSCILLATIONS MAINLY ROBUST
ORIGIN OF NEUTRINO MASS & PATTERN OF MIXING REMAIN A MISTERY
NEUTRINO PROPERTIES MAY BE TESTABLE AT LHC
DISPLACED VERTEX searches probe neutrino mass scale LSP DECAY PATTERN probes neutrino mixing
SUMMARY
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THE ENDTHANK YOU
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