1. New Physics Indications viewed by UTfit
Denis Derkach
IN2P3/LAL-Orsay
On behalf of the UTfit collaboration

2. Input values and predictions
Outline
SM UT analysis
Input values and predictions
New physics model independent UT analysis

3. Constraints used (angles)h r a
Bpp, BKp, BKK
BJ/Yp, BJ/YK
sin(2b)
cos(2b)
BDK, BDp
2b+g
BDK, BDp g
= ± 0.029
 = ± 0.015
BDK

4. Constraints used (sides and others)
exclusive BDln (Bp(r)ln) determination
inclusive bc (bu) determination
|Vub/Vcb|
indirect CP
violation in KL decays eK
Dmd
Bd mixing
Bd,s mixing
Dmd/Dms
= ± 0.027
 = ± 0.021

5. The value of each constraint can be
SM fit
All the constraints are compatible showing another success of the Standard Model
The value of each constraint can be
“predicted” from the SM description using all other inputs and compared to the experimental measurement of this constraint.
= ± 0.020
 = ± 0.012

6. g inputs and |Vub/ Vcb| constraints are “orthogonal”.
Well compatible with the prediction from SM
Color code: agreement between the predicted values
and the measurements at better than 1, 2, ...n sigmas
They are derived from tree-level process
 Select r-h values valid in most of the New Physics extensions.

7. Vub and Vcb measurements
Exclusive
Bp(r)ln  |Vub|= (35.0±4.0)10-4
Inclusive
buln  |Vub|= (39.9±1.5±4.0)10-4
SM prediction |Vub|= (35.5±1.4)10-4
Vcb
Exclusive
BDln  |Vcb|= (39.0±0.9)10-4
Inclusive
bcln  |Vcb|= (41.54±0.44±0.58)10-4
SM prediction |Vcb|= (42.7±1.0)10-3
Exclusive measurements are using LQCD form factors.
Flat error for “model spread” for inclusive determination

8. a measurements
SM predictions
measurements
a=91.4±6.1
a=85.4±3.7

9. Dms, Dmd measurements
Dmd=(0.507±0.005) ps-1
|Vtd|/|Vcb|~Rt from Bd and Bs mixing
(which are loop mediated)
measurement
SM predictions
Dms=(17.77±0.12) ps-1
Dms=(18.3±1.3) ps-1

10. eK measurements
measurement
eK=(2.22±0.01)·10-3
SM prediction
eK=(1.92±0.18)·10-3

11. Sin(2b) and BR(Btn) measurements
SM predictions
sin(2b)=0.771±0.036
SM predictions
BR(Btn)=(0.805±0.071) ·10-4
To accommodate Br(Btn) we need large value of Vub
To accommodate sin2 we need lower value of Vub

12. Summary Table of the SM pulls
Prediction
Measurement
Pull
a, º
(85.4±3.7)
(91.4±6.1)
-0.4
sin(2b)
(0.771±0.036)
(0.654±0.026)
-0.8
g , º
(69.6±3.1)
(74±11)
+2.2
Vub, 103
(3.55±0.14)
(3.76±0.2)
-0.9
Vcb, 103
(42.69±0.99)
(40.83±0.45)
+1.6 eK
(1.92±0.18)
(2.23±0.010)
-1.7
BR(Btn), 104
(0.805±0.071)
(1.72±0.28)
-3.2
Dms, ps-1
(17.77±0.12)
(18.3±1.3)

13. Generic NP parameterization
Since the fit is over constrained, we can introduce new parameters added in order to parameterize generic NP DF=2 processes in all sectors
In case of absence of NP effects, Ci=1, fi=0 SM
NP DF=2
= ± 0.020
 = ± 0.012
= ± 0.040
 = ± 0.026
and h generic NP fit are not different for SM ones
and the error are twice larger

14. NP parameters fit result, Bd and K sectors
For K mixing, the NP parameters are found in agreement with the SM expectations
CeK=1.05±0.12
For Bd mixing, the phase fBd is found 1.8s away from the SM expectation
reflecting tensions in sin2b
CBd=0.95±0.14
fBd=(-3.1±1.7)º
~1.8s away from SM

15. NP parameters fit result, Bs sector
~3.1s away from SM
CBs=0.94±0.19
fBd=(-19.8±8)ºU(-69±7)º
[-38,-6] U prob.
Possible hint to some effects of NP? But CDF new measurements reduces
the significance of the disagreement

16. NP parameters fit result
ANP/ASM prob.
ANP/ASM still can be as big as 2

17. Conclusion
CKM matrix is the dominant source of flavour mixing and CP violation
s(r)~15% s(h) ~4%
General UTA provides precise determinations of CKM parameters and NP contributions to DF=2 amplitudes.
Nevertheless there are tensions here and there that should be continuously and quantitatively monitored : sin2b (2.2s), eK (1.7s) , Br(Btn) (3.2s). To render these tests more effective we need to improved the single implied measurements but also the predictions.
Model Independent fit show some discrepancy on the NP phase parameters Bd = -(3.1 ± 1.7)o Bs = (-20 ± 8)oU(-68 ± 8)o
Effect in CPV in Bs mixing: it would require new sources of flavour & CPV, natural in many extensions of SM