STANDARD MODEL : SM HIGGS BOSON

massless neutrinos

BEYOND STANDARD MODEL : spin 0 composite particle

massive Majorana neutrinos

massive Dirac neutrinos

Il nuovo cannocchiale !

Neutrinos: active

QuickTime™ and aTIFF (LZW) decompressor

are needed to see this picture.

νμ→νe Result

16

Expected 1.5 ±0.3 BG and observed 6 event.θ13 = 0 probability is only 0.7%.

0.03 < sin22θ13 < 0.28(normal) 0.04 < sin22θ13 < 0.34(inverted)

Reconstructed νe energy 68%/90% CL region

We observed the indication of θ13≠0

Phys. Rev. Lett. 107:041801, (2011)

Probability to observe the vertex distribution

23

νμ→νx Result

17

90% CL region

First observation of νμ disappearance using off-axis beam.

Reconstructed νμ energy

Clear oscillation pattern is observed with off-axis beam

90% CL boundary includes (1.0, 3.1x10-3eV2), (0.84, 2.65x 10-3eV2) and (1.0, 2.2x10-3eV2)

Phys. Rev. D 85, 031103(R)

XIV International Workshop on Neutrino Telescopes (2011)A. Rubbia

!"#$%&'()%#"*+&,$-"../%"+*&0($).%$&1#+2&!"#$%&'()%#"*+&,$-"../%"+*&0($).%$&1#+2&%3(&456&789(#"2(*%&%3(&456&789(#"2(*%&

:/#;&</#%=:/#;&</#%=

>?*"@A&+1&4+#+*%+B&C+#;&?*"@AD>?*"@A&+1&4+#+*%+B&C+#;&?*"@AD

1+#&%3(&456&E+../F+#/%"+*1+#&%3(&456&E+../F+#/%"+*

ND280 off-axis event gallery

15NuHorizons IV, Allahabad, India, February 23-25, 2011 B.Andrieu The T2K experiment: status, first results and future plans - 17

ND280 event displays: ! candidates

!µ"

quasi-elastic candidate

single pion candidate DIS candidate

!µ

! "

µ-

!µ

" "

µ-

##

sand muon + DIS candidate

15Wednesday, March 16, 2011

Vacuum frequency δm2/2E (unknown sign) interferes with νe interaction energy √2GFNe (known sign) in solar matter: MSW

Get (ν1, ν2) hierarchy: state with largest νe component is the lightest of the two – conventionally, ν1

Main features of matter effects: established Spectral details: need higher stat, lower E

SK: ~flat

SNO: ~downturn

Borexino: transition with low-E upturn

6

Here at TAUP 2011: Final SNO data analysis and first Borexino pep flux data!

Rencontres de Moriond EW, La Thuile, 3-10 March 2012 Livia Ludhova (Borexino collaboration)

What can we learn from solar neutrinos (1) ?

Astrophysics: resolving “metallicity problem” metallicity

abundance of the elements above He

New 3D Standard Solar Models -> lower metallicity -> discrepancy with helioseismology…

where is the problem?

Solar neutrino

fluxes

depend

on metallicity!

Rencontres de Moriond EW, La Thuile, 3-10 March 2012 Livia Ludhova (Borexino collaboration)

Implications of the 7Be measurement

•comparing to non-oscillated SSM : no oscillation excluded @ 5.0

(electron equivalent flux (862 keV line): (2.78 + 0.13) x 109 cm-2 s-1)

• assuming MSW-LMA: f (7Be) = measured flux / SSM = 0.97 + 0.09

• including all solar experiments + luminosity constrain:

no power to resolve low/high

metallicity problem Pee = 0.51 + 0.07(experiment + SSM high metalilcity);

24

The  first  ντ  candidate  event  Phys.  Lev.  B  691  (2010)  138    

"Results from OPERA" A. Longhin INFN-LNF 8

Statistics update and analysis improvements

● 2008-2009 data analysis completed (arXiv:1107.2594v1) ● 4.81019 pot, 34% of available sample, 2.6 × more statistics w.r.t. candidate publication● 2738 fully analysed events (decay search). No new

Acc. by New Journ. of Phys.

OPERA data█ Reconstructed MC

NC events ν

Full simulation chain with reconstruction in the emulsions

● Analysis improvements

1) Search of highly ionizing tracks in hadronic interactions ( bckg for h)

2) Follow down of vertex tracks in the emulsion p-range correlations increased -ID efficiency charm background hadronic bckg from

CC with misID

3) Implementation of state-of-the art charm cross section from CHORUS ( )

"Results from OPERA" A. Longhin INFN-LNF 14

Updated S/B expectations

Decay channel

Expected signal events

22.5 1019 p.o.t.

4.8 1019 p.o.t. (analysed)

→ µ 1.79 0.39 → e 2.89 0.63 → h 2.25 0.49

→ 3h 0.71 0.15 Total 7.63 1.65

● In the analyzed sample (92% of 08/09 data) ● one

observed in the → h channel compatible with the expectation of 1.65

● Expected background in → h : 0.05 ± 0.01 events● Total background (considering all channels): 0.16 ± 0.03 events● → is the cleanest channel

Including all the improvements in the analysis

m2 = 2.5 10-3 eV2

CNGS neutrino run in 2010-2011

2010 2011

Event Type Collected Expected Collected Expected

νµ CC 114 129 247 273

νµ NC 46 42 71 90

νe CC 1 1 - -

νXC⋆ 7 - 37 -

Total 167 171 355 363

⋆ Events at edges, with µ track too short to be visually recognized: futher analysisneeded.

dataEntries 319

Mean 0.4753± 9.615

RMS 0.3361± 8.463

[GeV]depE0 5 10 15 20 25 30 35 40 45 500

5

10

15

20

25

30

35

40

45data

Entries 319

Mean 0.4753± 9.615

RMS 0.3361± 8.463

MCEntries 3655

Mean 0.1196± 8.913

RMS 0.08457± 7.17

CNGS CC 2010/2011

dataEntries 90

Mean 0.9454± 7.533

RMS 0.6685± 8.969

[GeV]depE0 5 10 15 20 25 30 35 40 45 500

2

4

6

8

10

12

14

16

18 dataEntries 90

Mean 0.9454± 7.533

RMS 0.6685± 8.969

MCEntries 697

Mean 0.2773± 7.487

RMS 0.1961± 7.262

CNGS NC 2010/2011

Izabela Kochanek (US & LNGS) Icarus T600 03-10 March 2012 7 / 12

CNGS CC νµ interaction

Edeptot = 3.23 ± 0.54 GeV

1 pT = 78 MeV/cPtot = 7 GeV/c

2 pT = 154 MeV/cPtot = 6.5GeV/c

TRACK E [MeV] p [MeV/c] range [cm]

A (π) 62 ± 5 145 ± 7 18

A (π) 337 ± 32 455 ± 32 18

B (π) 429 ± 36 550 ± 38 92

dE/dx for the first part of the cascades: 1.99 MeV/cm, 2.1 MeV/cm.Conversion distances: 14.6cm, 61.4cm.

Izabela Kochanek (US & LNGS) Icarus T600 03-10 March 2012 11 / 12

UD =

0B�1 0 00 c23 s23

0 �s23 c23

1CA#23 ' #ATM

0B� c13 0 s13e�iÆ13

0 1 0�s13e iÆ13 0 c13

1CA0B� c12 s12 0�s12 c12 00 0 1

1CA#12 ' #SOL

∆m221 =

�7:65+0:23�0:20�� 10�5 eV2 j∆m

231j = �

2:40+0:12�0:11�� 10�3 eV2

sin2 #12 = 0:304+0:022�0:016 sin2 #23 = 0:50+0:07�0:06[Schwetz, Tortola, Valle, arXiv:1108.1376]

6 days ago: sin2 #13 = 0:023 � 0:004 [Daya Bay, arXiv:1203.1669]

Previous indications of sin2 #13 > 0: [T2K, arXiv:1106.2822],[MINOS, arXiv:1108.0015], [Double Chooz, arXiv:1112.6353]#13 6= 0 =) CP violation, matter effects, mass hierarchy

C. Giunti � Neutrino Masses � 14 March 2011 � 13/28

EPILOGUE Three (ν) gondolas are safe in the harbor… …but that’s not what they are made for. New gondolas might join, and all lead us towards new (physics) horizons

Thank you for your attention

Neutrinos: sterile

A long standing set of anomalies

Bugey4

ILL

Bugey3Bugey3Bugey3

Goesgen

Goesgen

GoesgenRovno

Rovno

Krasnoyarsk

Krasnoyarsk

KrasnoyarskSRP

SRP

LSND

Karmen

GallexCr1

GallexCr2

SageCr

SageAr

MiniBooNE-ν

MiniBooNE-ν

1980 1985 1990 1995 2000 2005 2010

-2

-1

0

1

2

3

4

Year

Evidence(σ)

Beam Dump

Accelerator

Calibration source

Reactors

Anti-Neutrino

Neutrino

Mauro Mezzetto (INFN Padova) Beyond3nu Summary Beyond3nu, 3-4/5/11 2 / 28

Summarizing

0.7

0.8

0.9

1.0

1.1

p(m

ea

sure

d)/p

(pre

dic

ted

)

Gallex Cr1

Gallex Cr2

SAGE Cr

SAGE Ar

ReactorsSources

AcceleratorsP

µe

()

L / E m /MeV( )

MB mode

L SND

0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.60.005

0.000

0.005

0.010

0.015

0.020

Mauro Mezzetto (INFN Padova) Beyond3nu Summary Beyond3nu, 3-4/5/11 3 / 28

νe Disappearance in Gallium radioactive source experiments

0.7

0.8

0.9

1.0

1.1

p(m

easu

red)

/p(p

redi

cted

)

Gallex Cr1

Gallex Cr2

SAGE Cr

SAGE Ar

R ≡ wheighted average value of the ratio of measured and predicted 71Ge productionrates (p) :

R ≡ p(measured)p(predicted) = 0.87 ± 0.05

arXiv:0901.2200[nucl-ex]

Ga radioactive source exp. results may be interpreted as an indication ofthe disappearance of νe due to active-sterile oscillations!hep-ph/0610352 Carlo Giunti & ML

sin22ϑ

∆m2

[eV

2 ]

10−2 10−1

10−1

1

10

+

Gallium

68.27% C.L. (1σ)95.45% C.L. (2σ)99.73% C.L. (3σ)

Gallium

68.27% C.L. (1σ)95.45% C.L. (2σ)99.73% C.L. (3σ)

[Giunti, Laveder, arXiv:1006.3244]

sin22ϑ

∆m2

[eV

2 ]

10−3 10−2 10−1

10−1

1

10

+

Re + 3H

68.27% C.L. (1σ)95.45% C.L. (2σ)99.73% C.L. (3σ)

Re + 3H

68.27% C.L. (1σ)95.45% C.L. (2σ)99.73% C.L. (3σ)

[Giunti, Laveder, PRD 82 (2010) 053005, arXiv:1005.4599]

∆m2SBL & 1 eV2 is OK, but sin2 2#� > sin2 2#�̄

Parameter Goodness of Fit = 0:2%CPT violation? [Giunti, Laveder, PRD 82 (2010) 113009, arXiv:1008.4750]

C. Giunti � Sterile Neutrino Fits � 17 Mar 2011 � 22/27

Borexino test exp

Mar. 15, 2011XIV International Workshop on Neutrino Telescopes - L. Corwin

Interesting Tension (2.3σ difference)Plan to have at least double current data set by this Summer.

• Data taking interrupted by target failure on Feb. 26

• Plan to have new target in April

14

Footnote: MINOS neutrino/antineutrino anomaly…

…does not show up in 2011 data!

20

CEA DSM Irfu

The Reactor Antineutrino Anomaly and implications

Th. Lasserre (CEA-Saclay, Irfu SPP & APC)

1

CEA DSM Irfu

Putting it all together: reactor rates + shape + Gallium + (MB)

The no-oscillation hypothesis is disfavored at 99.8% CL 34 T. Lasserre

* Miniboone re-analysis of : C. Giunti, M. Laveder, Phys. Rev. D82 (2010) 053005

*

Venice_March2011 Slide# : 9

The neutrino run

Venice_March2011 Slide# : 9

(A) electron-like neutrino data. Comparison between the data (black dots) and the calculated distributions due to misidentified

events (red) and genuine e

events (blue). The sum is indicated in black. One notices an anomaly at low energies, which is incompatible with LNSD predictions.

(B) according to Giunti & Laveder scaling of the events is applied with a

factor 1.26, within the permitted uncertainty of F = 1.24 ±0.21 and gives an acceptable fit to the data. The e

with and without scaling and disappearance are also shown.

10

Data/MC = 1.036±0.028(stat.) +0.044-0.037(syst.) ±0.39(phys.)

Data/MC =0.6 ±0.4(stat.)±0.2(syst.)

ND280 measurements

p beam

The estimation is based on the measurement of π/K production in p+Carbon(target) interactions in the NA61 experiment (5-10% errors)

Estimation of neutrino flux Estimation/Measurement of Neutrino Flux

π+ production

e momentum with νe selection νμ energy spectrum

Phys. Rev. C84:034604 (2011)

π/K

graphite target

μ

νμ

Recon. Eνe

Data/MC =1.19 ±0.15(stat.)±0.26(syst.)

Intermezzo sulla fisica di Majorana

September 5, 08 A. Bettini. INFN 7

Nuovo Cimento 14 (1937) 171-184

We show that it is possible to achieve complete formal symmetrization in the electron andpositron quantum theory by means of a new quantization process. The meaning of Diracequations is somewhat modified and it is no more necessary to speak of negative-energystates; nor to assume, for any other type of particles, especially neutral ones, the existenceof antiparticles, corresponding to the “holes” of negative energy.

Massa dell’ ”Higgs” (J=0) = 3 volte la massa del bosone Z(J=1) 273 GeV !!!

( 1932 )

Testable Implications[Giunti, Laveder, PLB 706 (2011) 200, arXiv:1111.1069]� Decay

02

46

810

mβ(4)

[eV]

∆χ2

10−2 10−1 1

68.27%

90%

95.45%

99%

99.73%

REA+TRIGAL+TRICAR+TRIRGCTGLO−LOWGLO−HIG

m� =qP

k jUek j2m2k

m(4)� = jUe4jq∆m2

41

(��)0� Decay

02

46

810

mββ(4)

[eV]

∆χ2

10−3 10−2 10−1 1

68.27%

90%

95.45%

99%

99.73%

REA+TRIGAL+TRICAR+TRIRGCTGLO−LOWGLO−HIG

m�� =��P

k U2ek mk

��m

(4)�� = jUe4j2q∆m241

C. Giunti � Neutrino Physics � 16-17 Feb 2012 � 99

d

s

1

2

coupled to W,Zsterile

sterilecoupled to W,Z

θcθc

Cabibbo’s angle

ν

ν

ν

νs

e

QUARKS NEUTRINOS

COMPLEMENTARITY relation :

θ12 ∼ 32o θes ∼ 13o θ12 + θes = 45o

A.G. Riess et al. astro-ph 1103.2976

... if they are roses they’ll flower...

... A BRIGHT FUTURE for Majorana ν physics !!!

New Neutrino Facility in the CERN North Area�

Slide 16�

100 GeV primary beam fast extracted from SPS; target station next to TCC2; decay pipe l =100m, ø = 3m; beam dump: 15m of Fe with graphite core, followed by µ stations. Neutrino beam angle: pointing upwards; at -3m in the far detector ~5mrad slope.

Near position (330 m)

Mid position (1100 m)

Far position (1600 m)

SPSC_Open Presentation April 2012�

Global 3+1 Fit of SBL Data[Giunti, Laveder, arXiv:1109.4033, arXiv:1111.1069]

◮ Simplest scheme beyond standard three-neutrino mixing which canpartially explain the data.

◮ It corresponds to the natural addition of one new entity (a sterileneutrino) to explain a new effect (short-baseline oscillations).

sin22ϑeµ

∆m412

[e

V2 ]

10−4 10−3 10−2 10−1

10−1

1

10

+

DIS

APP

GLO−HIG

68.27% C.L. (1σ)90.00% C.L.95.45% C.L. (2σ)99.00% C.L.99.73% C.L. (3σ)

sin22ϑee

10−2 10−1

+

DIS

APP

sin22ϑµµ

10−2 10−1

+

DIS

APP

Best fit: ∆m241 � 1:6 eV2 =) m4 � 1:3 eV

C. Giunti � Neutrino Physics � 16-17 Feb 2012 � 97

LAr + NESSiE νμ

disappearance

LAr +

GRAZIE Milla !!!

STANDARD MODEL : SM HIGGS BOSON

massless neutrinos

BEYOND STANDARD MODEL : spin 0 composite particle

massive Majorana neutrinos

massive Dirac neutrinos

Combined exclusion limit

Expected exclusion at 95% CL: 120-555 GeV

Observed exclusion at 95% CL: 110-117.5, 118.5-122.5, 129-539 GeV

Observed exclusion at 99% CL: 130-486 GeV

Introduction / High-mH search: ``νν, ``jj, `νjj / Low-mH search: 4`, γγ • `ν`ν, bb, ττ / Combination / End? 20/24