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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

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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

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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