[PPT] - Large q 13 : a window for CPV and the mass hierarchy Enrique Fernndez PowerPoint Presentation

SLIDE 1

Large q13: a window for CPV and the mass hierarchy

Enrique Fernández Martínez

SLIDE 2

Oscillation Parameters

 What we already know (1s)

 Solar sector  Atm. sector

      

     015 . 017 . 12 2 2 5 19 . 19 . 2 21

320 . sin eV 10 62 . 7 q m        

          05 . 07 . 08 . 05 . 23 2 2 3 10 . 07 . 3 08 . 10 . 2 31

53 . / 49 . sin eV 10 40 . 2

/

10 53 . 2 q m

D. V. Forero, M. Tortola, J. Valle 1205.4018

see also G.L. Fogli, E. Lisi, A. Marrone, D. Montanino, A. Palazzo, A.M. Rotunno 1205.5254

SLIDE 3

Oscillation Parameters

 What we already know (1s)

 Solar sector  Atm. sector 

 What we still don’t know

 d  Mass hierarchy

 

2 31

m sign satm  

D. V. Forero, M. Tortola, J. Valle 1205.4018

see also G.L. Fogli, E. Lisi, A. Marrone, D. Montanino, A. Palazzo, A.M. Rotunno 1205.5254

      

     015 . 017 . 12 2 2 5 19 . 19 . 2 21

320 . sin eV 10 62 . 7 q m        

          05 . 07 . 08 . 05 . 23 2 2 3 10 . 07 . 3 08 . 10 . 2 31

53 . / 49 . sin eV 10 40 . 2

/

10 53 . 2 q m

SLIDE 4

The Golden channel in matter

A. Cervera et al. hep-ph/0002108

                        2 cos 2 ~ sin 2 sin ~ L L B AL B

atm atm

d

 

 

2 23

s P

e

 



 

12 2 2 23

2 sin q c  

2 2

2 ~ sin ~                  L B B

atm   13 2 2

sin q

2

       A L

sol

J ~ A

sol



(_) (_)

      2 sin 2 AL

e Fn

G A 2 

atm

A B   



~ Expanded in

23 12 13 13

2 sin 2 sin 2 sin cos ~ q q q q  J

sin 2q13 ~ 0.3

05 . 2 @        L

sol

E

m

sol

2

2 12

  

E

m

atm

2

2 23

  

where

SLIDE 5

Sensitivities with present experiments

From P. Huber et al. 0907.1896

Normal hierarchy Inverted hierarchy

1, 2 and 3 s

T2K+ Noa+ Daya Bay+ DChooz

SLIDE 6

Sensitivities with future accelerators

Mass hierarchy CP violation

From EFM, T. Li, O. Mena and S. Pascoli 0911.3776

3 s

SLIDE 7

5 questions before we launch the large q13 race

1. Do we need the mass hierarchy from the same

machine that gives us d?

SLIDE 8

T2HK

K. Abe et al. HK LoI 1109.3262

SLIDE 9

3 s Red 100 kt INO Solid: high res INO (sE/E = 0.10, sq = 10º) Black 50 kt INO Dashed: low res INO (sE/E = 0.15, sq = 15º)

Mass hierarchy with Noa + T2K + INO

From M. Blennow and T. Schwetz 1203.3388

SLIDE 10

Mass hierarchy with PINGU

From E. Kh. Akhmedov, S. Razzaque and A. Yu. Smirnov 1205.7071

sE=2 GeV, sq=11.25º s=5% 11s sE=4 GeV, sq=22.5º s=10% 3s

SLIDE 11

5 questions before we launch the large q13 race

1. Do we need the mass hierarchy from the same

machine that gives us d?

2. Downgrading: How much can we afford?

SLIDE 12

Downgrading is trendy in the large q13 race!

2001 2011 2012

T2HK: 4MW + 500 kt → 1.6MW + 500 kt → 0.7 MW? + 500 kt → ??

2010 2012

LBNE: 2MW + 33 kt → 0.7MW + 17 kt? → ??

2011 2012 2012

LBNO: 2MW + 100 kt → 2MW + 20 kt → 0.8MW + 20 kt → ??

SLIDE 13

Danger!!! How much can we afford?

SLIDE 14

5 questions before we launch the large q13 race

1. Do we need the mass hierarchy from the same

machine that gives us d?

2. Downgrading: How much can we afford?
3. Precision: New comparisons. How much?

SLIDE 15

Precision

q13: 3º - 10º

P. Coloma, A. Donini, EFM and P. Hernandez 1203.5651

SLIDE 16

How much precision we need?

P. Coloma, P. Huber, J. Kopp and W. Winter in preparation

SLIDE 17

How much precision we need?

P. Coloma, P. Huber, J. Kopp and W. Winter in preparation

For quarks For neutrinos J = 0.29 sin d With this value of q13 we cannot below J=10-2

SLIDE 18

5 questions before we launch the large q13 race

1. Do we need the mass hierarchy from the same

machine that gives us d?

2. Downgrading: How much can we afford?
3. Precision: New comparisons. How much?
4. Systematics!

SLIDE 19

Systematics

In many cases comparison of performance depends on sys A precise knowledge of the sys is mandatory!! 2.5/10% 2.5/10% 1/5% Precision CPV discovery

SLIDE 20

5 questions before we launch the large q13 race

1. Do we need the mass hierarchy from the same

machine that gives us d?

2. Downgrading: How much can we afford?
3. Precision: New comparisons. How much?
4. Systematics!
5. New strategies for large q13?

SLIDE 21

Optimization of facilities for large q13

SLIDE 22

SPL at Frejus vs Canfranc

Lines are reducing the statistics by factors of 2, 4, 8 and 16 For high statistics Canfranc much better For very small statistics Frejus better

P. Coloma and EFM 1110.4583

Precision CPV discovery

SLIDE 23

Conclusions

The large value of q13 discovered by Daya Bay opens the window to the measurement of the neutrino mass hierarchy and leptonic CP violation. T2K and Noa will provide the first ~90% CL indications

ver the next 8 years.

We still need to “digest” the large q13 news before

committing. Important questions to answer:

 Will we get the mass hierarchy from atmospherics?  What are the achievable systematics at each facility?  How much precision do we need?  How much can we afford to downgrade?

SLIDE 24

Daya-Bay II

S.T. Petcov and M. Piai hep-ph/0112074 S.Choubey, S.T. Petcov and M. Piai hep-ph/0306017

J. Learned et al. hep-ex/0612022
L. Zhan, Y. Wang, J. Cao, L. Wen 0807.3203; 0901.2976

Big detector ~20 kt L = 60 km Really good energy resolution

SLIDE 25

Precision: q13

P. Coloma, A. Donini, EFM and P. Hernandez 1203.5651

Daya Bay

nly sys

SLIDE 26

Present (and near future)  beams

 Noa: L=810 Km E= 1.5-3 GeV

3 + 3 yr run. 2013 starts data taking 15 kt active scintillator detector

 T2K: L=295 Km, E= 0.4-1.2 GeV

SK 22 kt water Cerenkov detector  beam → no sensitivity to d

SLIDE 27

Sensitivities with present experiments

From P. Huber et al. 0907.1896

1, 2 and 3 s

SLIDE 28

Final Comparison

SLIDE 29

Neutrinoless double b decay

Adapted from M. Blennow, EFM,

J. Lopez and J. Menendez 1005.3240

Present constraints on absolute neutrino mass Near future with Planck survey (ongoing) and approved 0bb experiments Future with weak lensing from LSST (survey ~2020) and prospective 0bb experiments

SLIDE 30

The degeneracy problem

 There is a curve of

solutions

J. Burguet-Castell et al. hep-ph/0103258

 Black square = input

“true” value

 If we add antineutrinos

the two curves intersect in 2 regions: The true solution and an intrinsic

degeneracy

SLIDE 31

The degeneracy problem

Two other unknown parameters: sign and oct

Eightfold degeneracy: Intrinsic sign octant mixed

 There are 4 different sets

f curves for different

choices of sign and octant

 2 Intersections each

H. Minakata and H. Nunokawa hep-ph/0108085

G.L.Fogli and E. Lisi hep-ph/9604415

V. Barger and D. Marfatia hep-ph/0112119

SLIDE 32

Super-Beams

 SPL: CERN - Frejus L=130 km

E= 0.1-0.5 GeV 500 kt water Cerenkov detector

 T2HK: Beam power x2

mass x25 (560 kt) Hyper-K Abe et al 1109.3262

 Intense conventional  beams from p decay with

MW proton drivers

 LBNE: Wide Band Beam

E= 1-5 GeV Fnal – Dusel L=1300 km Liquid Ar detector 33.4 kt

 LAGUNA-LBNO: Wide Band

Beam E= 1-8 GeV CERN – Pyhäsalmi L=2300 km Liquid Ar detector 100 kt

SLIDE 33

b-Beams

Pure e beams from the b decay of radiactive ions

e  → e e →



   e Li He

e



6 6



   e F Ne

e



18 18

P. Zucchelli 2002

SLIDE 34

 Pure e and  from the  decay accelated to 25 GeV

Neutrino Factory

Lots of channels could be observed

 golden channel: e →   silver channel: e → t

  →    → t

Needs to measure the lepton charge to identify the original flavour Magnetized iron detector for e →  and ECC for e → t



  

e

  

S. Geer hep-ex/9712290
A. de Rujula, B. Gavela and P. Hernandez hep-ex/9811390

L = 4000km

SLIDE 35

Precision

P. Coloma, A. Donini, EFM and P. Hernandez 1203.5651

From P. Huber et al. 0907.1896