Plots for Future sensitivity to new physics
in Bd, Bs and K mixings

Menu:

Reference
Numerical results
Generic fit: CKM matrix
Generic fit: NP in mixing
Specific scenarios

Reference:

The plots below come from the following paper:

Future sensitivity to new physics in Bd, Bs and K mixings

by J. Charles et al.

We consider the sensitivity to NP in mixing for past (2003), present (2013) and future (Stage I and Stage II). Stage I corresponds to anticipated 7 fb-1 LHCb data and 5 ab-1 Belle~II data, where Stage~II corresponds to 50 fb-1 LHCb and 50 ab-1 Belle~II data. We also take into account lattice projections for hadronic inputs. For Stage I and Stage II, inputs have been chosen to have a best-fit point in agreement with SM expectations.


Numerical results:

The results include:

  • Inputs of the fits

Numerical Results

Generic fit: CKM matrix

We have considered NP in M12q = M12SM,q(1+ hqe2iσq) independently for Bd, Bs and K (for tt boxes only), corresponding to NP with arbitrary flavour structure.
Constraints in the (ρ-bar,η-bar) plane for 2003. The combination of all constraints in yields the red-hatched regions, yellow regions, and dashed red contours at 68.3 %CL, 95.5 %CL, and 99.7 %CL respectively
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Constraints in the (ρ-bar,η-bar) plane for 2013. The intersection of the γ, γ(α)=π-α-β and |Vub| constraints yields two 95.5\%\,CL regions: yellow for positive rho-bar and eta-bar, mauve for negative rho-bar and eta-bar, symmetric with respect to the origin.
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Constraints in the (ρ-bar,η-bar) plane for Stage I.
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Constraints in the (ρ-bar,η-bar) plane for Stage II.
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Generic fit: NP in mixing

For Bd mixing, constraints in the (hdd) plane for 2003.
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Constraints in the (hdd) plane for 2013.
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Constraints in the (hdd) plane for Stage I.
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Constraints in the (hdd) plane for Stage II.
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For Bs mixing, constraints in the (hss) plane for 2003.
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Constraints in the (hss) plane for 2013.
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Constraints in the (hss) plane for Stage I.
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Constraints in the (hss) plane for Stage II.
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For Bd and Bs mixings, constraints in the (hd,hs) plane for 2003.
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Constraints in the (hd,hs) plane for 2013.
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Constraints in the (hd,hs) plane for Stage I.
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Constraints in the (hd,hs) plane for Stage II.
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For K mixing, constraints in the (hKK) plane for 2003.
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Constraints in the (hKK) plane for 2013.
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Constraints in the (hKK) plane for Stage I.
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Constraints in the (hKK) plane for Stage II.
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Specific scenarios:

We have considered classes of models were flavor violation in K mixing proceeds dominantly via the third generation, leading to the constraint:
σKds,
whereas hK,s,d are kept free.

Constraints in the ((hdhs)1/2,hK) plane for Stage II.

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We have also considered minimal U(2)3 models enforcing the following relations:
hB=hd=hs, σBds, and σK=0.
Constraint in the (hBB) plane for 2003.

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Constraint in the (hBB) plane for 2013.

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Constraint in the (hBB) plane for Stage I.

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Constraint in the (hBB) plane for Stage II.

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Constraint in the (hB,hK) plane for Stage II.

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