neutrino physics from cosmology evidence for new physics? steen hannestad, aarhus university...
TRANSCRIPT
![Page 1: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/1.jpg)
NEUTRINO PHYSICS FROM COSMOLOGYEVIDENCE FOR NEW PHYSICS?
STEEN HANNESTAD, Aarhus UniversityNuHorizons 2011
ne
nm
nt
![Page 2: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/2.jpg)
Fermion Mass Spectrum
10 1001 10 1001 10 1001 10 1001 10 1001 1meV eV keV MeV GeV TeV
d s bQ = -1/3
u c tQ = +2/3
Charged Leptons e m t
All flavors
n3
Neutrinos
![Page 3: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/3.jpg)
132313231223121323122312
132313231223121323122312
1313121312
ccescsscesccss
csesssccessccs
escscc
Uii
ii
i
1212
1212
sin
cos
s
c
)(
)(
)(
33
22
11
m
m
m
Ue
FLAVOUR STATES PROPAGATION STATES
MIXING MATRIX (UNITARY)
FORTUNATELY WE ONLY HAVE TO CARE ABOUT THE MASS STATES
![Page 4: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/4.jpg)
Normal hierarchy Inverted hierarchy
If neutrino masses are hierarchical then oscillation experimentsdo not give information on the absolute value of neutrino masses
However, if neutrino masses are degenerate
no information can be gained from such experiments.
Experiments which rely on either the kinematics of neutrino massor the spin-flip in neutrinoless double beta decay are the most efficient for measuring m0
catmospherimm 0
SOLAR nKAMLAND
ATMO. nK2KMINOS
![Page 5: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/5.jpg)
LIGHTEST
INVERTED
NORMAL
HIERARCHICAL DEGENERATE
![Page 6: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/6.jpg)
experimental observable is mn2
model independent neutrino mass from ß-decay kinematics
only assumption: relativistic energy-momentum relation
E0 = 18.6 keVT1/2 = 12.3 y
ß-decay and neutrino mass
T2:
![Page 7: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/7.jpg)
Tritium decay endpoint measurements have provided limitson the electron neutrino mass
This translates into a limit on the sum of the three mass eigenstates
(95%) eV 3.22/1
22 iei mU
eV 7im
Mainz experiment, final analysis (Kraus et al.)
em
![Page 8: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/8.jpg)
TLK
KATRIN experiment
Karlsruhe Tritium Neutrino Experiment at Forschungszentrum KarlsruheData taking starting early 2012
25 m
eV 2.0~)(e
m
![Page 9: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/9.jpg)
![Page 10: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/10.jpg)
NEUTRINO MASS AND ENERGY DENSITYFROM COSMOLOGY
NEUTRINOS AFFECT STRUCTURE FORMATIONBECAUSE THEY ARE A SOURCE OF DARK MATTER(n ~ 100 cm-3)
HOWEVER, eV NEUTRINOS ARE DIFFERENT FROM CDM BECAUSE THEY FREE STREAM
1eVFS Gpc 1~ md
SCALES SMALLER THAN dFS DAMPED AWAY, LEADS TOSUPPRESSION OF POWER ON SMALL SCALES
eV 932
mh FROM K2
11
43/1
TT
![Page 11: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/11.jpg)
N-BODY SIMULATIONS OF LCDM WITH AND WITHOUT NEUTRINO MASS (768 Mpc3) – GADGET 2
eV 9.6m 0m
T Haugboelle, University of Aarhus
256Mpc
![Page 12: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/12.jpg)
AVAILABLE COSMOLOGICAL DATA
![Page 13: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/13.jpg)
WMAP-7 TEMPERATURE POWER SPECTRUM
LARSON ET AL, ARXIV 1001.4635
![Page 14: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/14.jpg)
LARGE SCALE STRUCTURE SURVEYS - 2dF AND SDSS
![Page 15: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/15.jpg)
SDSS DR-7LRG SPECTRUM(Reid et al ’09)
![Page 16: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/16.jpg)
Sm = 0.3 eV
FINITE NEUTRINO MASSES SUPPRESS THE MATTER POWERSPECTRUM ON SCALES SMALLER THAN THE FREE-STREAMINGLENGTH
Sm = 1 eV
Sm = 0 eV
P(k
)/P
(k,m
n=0)
TOTFS
m
kkP
P
8~)(
0
![Page 17: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/17.jpg)
NOW, WHAT ABOUT NEUTRINOPHYSICS?
![Page 18: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/18.jpg)
WHAT IS THE PRESENT BOUND ON THE NEUTRINO MASS?
STH, MIRIZZI, RAFFELT, WONG (arxiv:1004:0695)HAMANN, STH, LESGOURGUES, RAMPF & WONG (arxiv:1003.3999)
DEPENDS ON DATA SETS USED AND ALLOWED PARAMETERS
C.L. 95 @ eV 44.0mUSING THE MINIMAL COSMOLOGICALMODEL
THERE ARE MANY ANALYSES IN THE LITERATURE
JUST ONE EXAMPLE
![Page 19: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/19.jpg)
THE NEUTRINO MASS FROM COSMOLOGY PLOT
Larger modelspace
More data
CMB only
+ SDSS
+ SNI-a+WL
+Ly-alpha
MinimalLCDM
+Nn +w+……
1.1 eV
0.6 eV
~ 0.5 eV
~ 0.2 eV
~ 2 eV 2.? eV ??? eV
~ 1 eV 1-2 eV
0.5-0.6 eV 0.5-0.6 eV
0.2-0.3 eV 0.2-0.3 eV
![Page 20: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/20.jpg)
Gonzalez-Garcia et al., arxiv:1006.3795
![Page 21: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/21.jpg)
WHAT IS Nn?
A MEASURE OF THE ENERGY DENSITY IN NON-INTERACTINGRADIATION IN THE EARLY UNIVERSE
THE STANDARD MODEL PREDICTION IS
3/4
0,0, 11
4
8
7 , 046.3
N
BUT ADDITIONAL LIGHT PARTICLES (STERILE NEUTRINOS,AXIONS, MAJORONS,…..) COULD MAKE IT HIGHER
Mangano et al., hep-ph/0506164
![Page 22: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/22.jpg)
TIME EVOLUTION OFTHE 95% BOUND ONNn
ESTIMATED PLANCKSENSITIVITY
Pre-WMAP
WMAP-1
WMAP-3
WMAP-5
WMAP-7
![Page 23: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/23.jpg)
ASSUMING A NUMBER OF ADDITIONAL STERILE STATES OF APPROXIMATELY EQUAL MASS, TWO QUALITATIVELY DIFFERENTHIERARCHIES EMERGE
3+N N+3
ns
nsnA
nA
A STERILE NEUTRINO IS PERHAPS THE MOST OBVIOUS CANDIDATEFOR AN EXPLANATION OF THE EXTRA ENERGY DENSITY
![Page 24: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/24.jpg)
Hamann, STH, Raffelt, Tamborra,Wong, arxiv:1006.5276 (PRL)
COSMOLOGY AT PRESENTNOT ONLY MARGINALLY PREFERS EXTRA ENERGYDENSITY, BUT ALSO ALLOWSFOR QUITE HIGH NEUTRINO MASSES!
3+N
N+3
See alsoDodelson et al. 2006Melchiorri et al. 2009Acero & Lesgourgues 2009
![Page 25: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/25.jpg)
Updated Antineutrino mode MB results for E>475 MeV (official oscillation region)
• Results for 5.66E20 POT
• Maximum likelihood fit.• Null excluded at 99.4%
with respect to the two neutrino oscillation fit.
• Best Fit Point
(∆m2, sin2 2θ) =
(0.064 eV2, 0.96)
χ2/NDF= 16.4/12.6
P(χ2)= 20.5%• Results to be published.
E>475 MeV
Richard Van de Water, NEUTRINO 2010, June 14
![Page 26: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/26.jpg)
A reanalysis of short baseline disappearance experiments seems to becompatible with oscillations (and requires at least one extra mass state)
Mention et al., arxiv:1101.2755
![Page 27: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/27.jpg)
Hamann, STH, Raffelt, Wong(in preparation):
What happens to cosmologicalparameters if a prior is imposedon the neutrino mass?
(this is now done in an extendedmodel)
1s
2s
3s
![Page 28: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/28.jpg)
BIG BANG NUCLEOSYNTHESIS
![Page 29: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/29.jpg)
N n = 3
N n = 4
N n = 2
The helium production is very sensitive to Nn
![Page 30: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/30.jpg)
Current helium data also suggests extra radiation
C.L.) (95% 14~ N
Aver et al 2010Izotov & Thuan 2010
![Page 31: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/31.jpg)
WHAT IS IN STORE FOR THE FUTURE?
BETTER CMB TEMPERATURE AND POLARIZATIONMEASUREMENTS (PLANCK)
LARGE SCALE STRUCTURE SURVEYS AT HIGH REDSHIFT
MEASUREMENTS OF WEAK GRAVITATIONAL LENSINGON LARGE SCALES
![Page 32: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/32.jpg)
Distortion of background images by foreground matter
Unlensed Lensed
WEAK LENSING – A POWERFUL PROBE FOR THE FUTURE
![Page 33: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/33.jpg)
FROM A WEAK LENSING SURVEY THE ANGULAR POWER SPECTRUMCAN BE CONSTRUCTED, JUST LIKE IN THE CASE OF CMB
MATTER POWER SPECTRUM (NON-LINEAR)
WEIGHT FUNCTION DESCRIBING LENSINGPROBABILITY
(SEE FOR INSTANCE JAIN & SELJAK ’96, ABAZAJIAN & DODELSON ’03,SIMPSON & BRIDLE ’04)
H
drPa
gHC m
0
2
240 ),/(
)(
16
9
),/( rP
H
dng
0
''
)'()'(2)(
![Page 34: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/34.jpg)
STH, TU, WONG 2006
![Page 35: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/35.jpg)
EUCLIDESA M-CLASS MISSION2020-25
![Page 36: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/36.jpg)
STH, TU & WONG 2006
![Page 37: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/37.jpg)
THIS SOUNDS GREAT, BUT UNFORTUNATELY THE THEORETICIANSCANNOT JUST LEAN BACK AND WAIT FOR FANTASTIC NEW DATATO ARRIVE…..
![Page 38: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/38.jpg)
FUTURE SURVEYS LIKE LSST WILL PROBE THE POWER SPECTRUM TO ~ 1-2 PERCENT PRECISION
WE SHOULD BE ABLE TO CALCULATE THE POWER SPECTRUM TO AT LEAST THE SAME PRECISION!
”LSST” ERROR BARS
-1
![Page 39: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/39.jpg)
IN ORDER TO CALCULATE THE POWER SPECTRUM TO 1%ON THESE SCALES, A LARGE NUMBER OF EFFECTS MUST BE TAKEN INTO ACCOUNT
BARYONIC PHYSICS – STAR FORMATION, SN FEEDBACK,…..
NEUTRINOS, EVEN WITH NORMAL HIERARCHY
NON-LINEAR GRAVITY
……………………..
![Page 40: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/40.jpg)
mP
P
6.9~
FULL NON-LINEAR
mP
P
8~
LINEAR THEORY
Brandbyge, STH, Haugbølle, Thomsen, arXiv:0802.3700 (JCAP)Brandbyge & STH ’09, ’10 (JCAP), Viel, Haehnelt, Springel ’10
NON-LINEAR EVOLUTION PROVIDES AN ADDITIONAL AND VERY CHARACTERISTIC SUPPRESSION OF FLUCTUATION POWER DUE TO NEUTRINOS (COULD BE USED AS A SMOKING GUN SIGNATURE)
![Page 41: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/41.jpg)
sunM14105
CDM n
1 < p/T < 20 < p/T < 1 2 < p/T < 3
3 < p/T < 4 4 < p/T < 5 5 < p/T < 6
512 h-1 Mpc
eV 6.0m
INDIVIDUAL HALO PROPERTIES
![Page 42: NEUTRINO PHYSICS FROM COSMOLOGY EVIDENCE FOR NEW PHYSICS? STEEN HANNESTAD, Aarhus University NuHorizons 2011 e](https://reader036.vdocuments.net/reader036/viewer/2022062314/56649dd35503460f94ac9ec0/html5/thumbnails/42.jpg)
CONCLUSIONS
NEUTRINO PHYSICS IS PERHAPS THE PRIME EXAMPLE OF HOW TO USE COSMOLOGY TO DO PARTICLE PHYSICS
THE BOUND ON NEUTRINO MASSES IS SIGNIFICANTLYSTRONGER THAN WHAT CAN BE OBTAINED FROM DIRECT EXPERIMENTS, ALBEIT MUCH MORE MODEL DEPENDENT
COSMOLOGICAL DATA MIGHT ACTUALLY BE POINTING TO PHYSICS BEYOND THE STANDARD MODEL IN THE FORM OFSTERILE NEUTRINOS