1. Round Table about SuperB CKM06- Nagoya
Achille Stocchi
LAL-IN2P3-Université Paris Sud PXI

2. SuperB with ≥50ab-1 can perform
g (DK)
[a(pp,rp,pp)]
1) measurements related to tree level/ ~tree level
sin(2b) (Peng.)
2) measurements very sensitive to NP Physics
AFB (Xsl+l-)-s0, ACP (Xsg)
LFV t m g
3) several quantities belonging to categories
1) and 2) depending upon precise LCQD
calculations
Br(B  (r,w),g) 2)
Br(B ln), Br(BD*tn)
Vub Vcb 1)
+ charm measurements
Several measurements are statistically
limited and so it is worthwhile to
collect >50ab-1
+ Specific run at the U(5S)

3. NP scale at 350 GeV NP at high significance !
Due to the actual disagreement betweenVub and sin2b we see a slight hint of new physics
Re (dd13)LL vs Im (dd13)LL
superB if disagreement
disapper. SM
Re (dd13)LL vs Im (dd13)LL
with
present disagreement
NP at
high significance !
Constraint from Dmd Constraint from sin2b cos2b
Constraint from sin2b All constraints

4. More details
for discussion

5. See also talk of M. Yamauchi
Observable
CKM (2ab-1)
SuperB (50ab-1)
Comments
sin(2b) (bccs)
<1 °
<1°
no improvement
sin(2b) (Peng.) fK
(f0,h’p0)K0 3K
~4°
~(6,3,5)°
~3°
<2°
~(2,1,2)°
~1°
Globally
could be
a factor 5
improvement
a (pp,rr,rp)
5° -8°
g (DK)
(5-10)°
(1-2)°
(Tree decays)GLW+ADS+Dalitz
also precisely measured at LHCb
Vcb-incl
Vcb-excl
1%-1.5% 4%
0.5?
1%?
More theo. parameters from data
Depends on Lattice
B D*tn
10-15%
2-3%
SM -senstitive to NP (H±)
Vub-incl
Vub-excl
10%
2%?
Br(B  ln)
Br(B m u)
20%
visible 8%
>5 improprement
Lattice is crucial
Br(B  (r,w),g)
0.1  10-6
0.03  10-6
|Vtd/Vts| from rg/K*g dep. Lattice
Br(B  mm)
Br(Bem)
110-8
210-8
not measurable
Intersting for MFV – at 2ab-1 off by two order of magnitude..
AFB (Xsl+l-) -s0
AFB (K*l+l-) –s0
ACP (K*l+l-)
at high masses
25% 6%
12% 5% 9%
[1-1.5]%
2.5%
for exclusive modes (and mainly for muons)
also precisely measured at LHCb
AFB (Xsg)
AFB (K*g)
[1-2]%
0.65%
[0.5-1]%
~0.3%
Interesting if s<0.5 (SM) Interesting if s<0.5 (SM) Exclusive modes precisely LHCb NP NP r a d I t v e
See also talk of M. Yamauchi

6. Hadronic matrix element
from Sharpe to Lubicz
Estimates of error for 2015
2 – 3%
4 - 5% %
11%
3 – 4%
----
13%
0.5%
(5% on 1-)
1.2%
(13% on 1-) 2%
(21% on 1-) 4%
(40% on 1-)
 B → D/D*lν
0.5 – 0.8 %
(3-4% on ξ-1) %
(9-12% on ξ-1) 3%
(18% on ξ-1) 5%
(26% on ξ-1) ξ
1 – 1.5%
3 - 4% % %
14% fB 1%
 0.1%
(2.4% on 1-f+)
0.4%
(10% on 1-f+)
0.7%
(17% on 1-f+)
0.9%
(22% on 1-f+)
1-10 PFlop Year
60 TFlop Year
6 TFlop Year
Current lattice error
Hadronic matrix element

7. UT fit in the SM: 2006 vs. 2015  = 0.163  0.028  = 0.2226  0.0028
 =  0.016
 = 