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Fit results: Winter 2013 (pre-Moriond13) |
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hidelink="Standard Model Fit"
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The fit results for all the nine CKM elements are
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The fit results for all the nine CKM elements are
woops, ordering error: got an ENDTWISTY before seeing a TWISTY |
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In principle, the presence of New Physics might affect the result of the UT analysis, changing the functional dependencies of the experimental quantities upon ρ and η. On the contrary, two constraints now available, are almost unchanged by the presence of NP: |Vub/Vcb| from semileptonic B decays and the UT angle γ from B → D(*)K decays. As usual from this fit one can gets predictions for each observable related to the Unitarity Triangle. This set of values is the minimal requirement that each model describing New Physics has to satisfy in order to be taken as a realistic description of physics beyond the Standard Model. |
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The fit results for all the nine CKM elements are
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woops, ordering error: got an ENDTWISTY before seeing a TWISTY |
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The fit presented here is meant to constrain the NP contributions to |Δ F|=2 transitions by using the available experimental information on loop-mediated processes In general, NP models introduce a large number of new parameters: flavour changing couplings, short distance coefficients and matrix elements of new local operators. The specific list and the actual values of these parameters can only be determined within a given model. Nevertheless mixing processes are described by a single amplitude and can be parameterized, without loss of generality, in terms of two parameters, which quantify the difference of the complex amplitude with respect to the SM one. Thus, for instance, in the case of mixing we define C_{B_q} \, e^{2 i \phi_{B_q}} = \frac{\langle B^0_q|H_\mathrm{eff}^\mathrm{full}|\bar{B}^0_q\rangle} {\langle |
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hidelink="Additional Materials"
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woops, ordering error: got an ENDTWISTY before seeing a TWISTY |