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1
T2K
KEK
Megan Friend [email protected]
2014 2 27
1
3 ( )
1 CP
1
CP
m2
32 m
3
NH m
3IH
23
sin2
23 0.5 ± 0.1 20%
23 / 4 (
)
1 [1]
Parameter Value
sin2 212
0.857 ± 0.024
sin2 223
> 0.95
sin2 213
0.095 ± 0.010
m221
(7.5 ± 0.20)× 10 5 eV2
| m232| (2.32
0.08+0.12)× 10 3 eV2
CP unknown
T2K 2009
7.8 × 1021 Protons On Target ( POT)
1
13 e2
sin2 2
23,
m232
3
CP T2K
T2K 13
13T2K CP
2013 T2K 8.4%
7.3 e [2] T2K
T2K
2 3 Maki-Nakagawa-Sakata(MNS)
(
e, , )
(
1,
2,
3) MNS
e
=
Ue1
Ue2
Ue3
U1
U2
U3
U1
U2
U3
1
2
3
0.6 GeV
295 km T2K e
e
P(
e) 4C
132 S
132 S
232 sin2
31
CP
8C
132C
12C
23S
13S
12S
23sin
CPsin
32sin
31sin
21
260
2
C
ij= cos
ij,
S
ij= sin
ij,
ij= m
ij2L /E
L E
CP
27%
e
13 O(100)
10%
2 ~ 3 CP
P( ) = 1 (C
134 sin2 2
23+ S
232 sin2 2
13)sin2
31
2
23 23
/ 4 / 4
e
sin2
23 e
3 T2K
T2K J-PARC 30GeV
295km 50kton
(SK)
[3]
[4]
T2K (1)
(2) ND (3)
SK
e e
e
T2K
4 T2K
2012 T2K [5][6]
7.8 × 1021 POT
2012
4.11 2 7.8 × 10
21 100%
100%
CP= 0
2 3
POT
(50% 50%)
Reconstructed Energy (GeV)0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2Ev
ents
/ 50
MeV
/ 7.
8e21
PO
T
0
5
10
15
20
25 Totale Signal e Signal
e + eBeam + Beam
Reconstructed Energy (GeV)0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2Ev
ents
/ 50
MeV
/ 7.
8e21
PO
T
012345678 Total
e Signal e Signal
e + eBeam + Beam
1
261
3
Reconstructed Energy (GeV)0 1 2 3 4 5 6 7 8 9 10Ev
ents
/ 50
MeV
/ 7.
8e21
PO
T
010203040506070 Total
e + e
Reconstructed Energy (GeV)0 1 2 3 4 5 6 7 8 9 10Ev
ents
/ 50
MeV
/ 7.
8e21
PO
T
0
5
10
15
20
25
30
Total
e + e
2
2
e+
e(CC) (CC)
+ (CC) CC NC
e
e
e+
e (CC)
+ (CC) NC
100% 211 2.3 41.2 1.6 33.2 290 100% 11.1 48.7 17.4 0.5 0.5 15.8
3 CCQE
CCQE
( ) CC(QE )
( ) Other
100% 782 (48) 544(40) 79 1493 100% 130 (263) 151(138) 33.5 715
4 2012 [5][6] SK
(ND ) 5.0% 4.2%
ND 7.4% 6.2% SK 3.9% 11.0%
9.7% 13.3%
4
4
binned likelihood
2lnL
2
4.2
T2K
90%
2
2
3 CP
sin2 213
1322sin
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
CP
-150
-100
-50
0
50
100
150
NHIH
1322sin
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
CP
-150
-100
-50
0
50
100
150
NHIH
1322sin
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
CP
-150
-100
-50
0
50
100
150
NHIH
(a) (b) (c)
3
sin2 2
13= 0.1 ,
CP= 90°
sin2 2
13 –
CP 90%
(a) 50% (b) 50%
(c)
262
4
1322sin
0 0.05 0.1 0.15 0.2 0.25
CP
-150
-100
-50
0
50
100
150
NHIH
1322sin
0 0.05 0.1 0.15 0.2 0.25
CP
-150
-100
-50
0
50
100
150
NHIH
(a) (b)
(a) 100% (b) 50% +50%
1322sin
0 0.05 0.1 0.15 0.2 0.25
CP
-150
-100
-50
0
50
100
150
NHIH
1322sin
0 0.05 0.1 0.15 0.2 0.25
CP
-150
-100
-50
0
50
100
150
NHIH
(c) (d)
(c) 100% (d) 50% +50%
4 ( ) 50% ( )
( ) ( ) sin2 2
13 CP90%
3
POT 50%
CP= 90°
NH IH 2
2
4 100%
13
2012 DayaBay
sin2 2
135%
4 CP
90° T2K
CP
T2K
5
m322
sin2 2
232
sin2
23= 0.4
4.3 CP
CP= 90°
sin2
23= 0.4
6 sin
CPCP
CP sin
CP= 0
2
sin
CP= 0 CP
90% CP
263
5
232sin
0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7
322 m
2.2
2.25
2.3
2.35
2.4
2.45
2.5
2.55
2.6-310
NHIH
232sin
0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7
322 m
2.2
2.25
2.3
2.35
2.4
2.45
2.5
2.55
2.6-310
NHIH
(a) 100% (b) 50% +50%
232sin
0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7
322 m
2.2
2.25
2.3
2.35
2.4
2.45
2.5
2.55
2.6-310
NHIH
232sin
0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7
322 m
2.2
2.25
2.3
2.35
2.4
2.45
2.5
2.55
2.6-310
NHIH
(c) 100% (d) 50% +50%
5 23
–
m32
2 90% CP
= 0 sin2
23= 0.4 ,
m 2
32= 2.4 × 10 3 eV2 ,
CP
-150 -100 -50 0 50 100 150
2
0123456789
10=0.4023
2sin=0.4523
2sin=0.5023
2sin=0.5523
2sin=0.6023
2sin
190%
CP
-150 -100 -50 0 50 100 150
2
0123456789
10=0.4023
2sin=0.4523
2sin=0.5023
2sin=0.5523
2sin=0.6023
2sin
190%
6 CP
sinCP
= 0 2012 T2K
CP,
23
50%
4.4 T2K
CP 23POT
2012
“ ”
7 CP POT
CP= 90° CP
264
6
POT21 100 1 2 3 4 5 6 7 8 9 10
2
0123456789
10
90% C.L.
C.L.3 =0.4023
2sin=0.5023
2sin=0.6023
2sinStat. Err. Only2012 Sys. Errs.Projected Sys. Errs.
POT21 100 1 2 3 4 5 6 7 8 9 10
2
0123456789
10
90% C.L.
C.L.3 =0.4023
2sin
=0.50232sin
=0.60232sin
Stat. Err. Only
Projected Sys. Errs.
(a) 100% (b) 50% +50% 7
CP= +90°
sin
CP0 vs. POT
23
2012
POT21 100 2 4 6 8 10
232
True
sin
0.35
0.4
0.45
0.5
0.55
0.6
0.65
C.L.390% C.L.
POT21 100 2 4 6 8 10
232
True
sin
0.35
0.4
0.45
0.5
0.55
0.6
0.65
C.L.390% C.L.
23 23 octant
8 23
vs. POT 23
/ 4 ( ) / 4 ( ) 2012
8
(a) 23
(b)
23POT
7 8 POT
T2K
4.5
4 2012 e
9.7%
13% 2013 [2][4]
8.8% 8.1% CP
5 ~ 8 %
~10 %
CP
23,
m2
23
5%
~ 7%
~14%
5 NOvA
810km NOvA
e
T2K
10% NOvA
30% NOvA
265
7
-beam
anti- -beam
9
T2K NOvA
T2K
T2K NOvA
CP
9 T2K
NOvA e
T2K NOvA
[7][8][9]
GloBES[10]
10
CPCP (
sin
CP0 )
T2K NOvA
10
2 11 90%
10 CP
sinCP
0 ( ) ( ) ( 4.3 5 ) T2K NO A POT 50% 50%
11
CP 23 sin
CP0 ( ) ( ) 90% ( )
T2K NO A T2K NO A POT
50% 50%
266
8
CP
sin2 2
23 CP
CP
T2K NOvA
CP
6
T2K e
7.8 × 1021
CP 6 7 ) 90° ( +90
° )
sin2
23 2
sin
CP= 0 CP
238)
sin2
230.45–0.57
90% 23
/ 4
NOvA , CP 10
11 , 10 11 )
5 ~ 8 %
~10 %
(
) 5%
T2K CP0
2 2
T2K CP
“CP ”
NOvA
90%
T2K
e
T2K NOvA
T2K
T2K
CP
[1] J. Beringer et al., (Particle Data Group), Phys. Rev. D
86, 010001 (2012) 2013 partial update.
[2] K. Abe et al., (T2K Collaboration), Phys. Rev. Lett.
112, 061802 (2014).
[3] K. Abe et al., (T2K Collaboration), Nucl. Instrum.
Meth. A659, 106 (2011).
[4] T2K 32-4 (2014).
[5] K. Abe et al., (T2K Collaboration), Phys. Rev. D88
032002 (2013).
[6] K. Abe et al., (T2K Collaboration), Phys. Rev. Lett.
111, 211803 (2012).
[7] http://www-nova.fnal.gov/plots_and_figures/plot_a
nd_figures.html
[8] http://nova-docdb.fnal.gov/cgi-bin/ShowDocument?d
ocid=7546
[9] http://nova-docdb.fnal.gov/cgi-bin/ShowDocument?d
ocid=7552
[10] http://www.mpi-hd.mpg.de/personalhomes/globes/
267