/ 00 12 21 5 v 2 1 6 Fe b 20 01 Determination of Unitarity Triangle parameters : where do we stand ?
نویسنده
چکیده
In this note I review the current determination of the unitarity triangle parameters by using the theoretical and experimental information available in summer 2000. email: [email protected] work done in collaboration with M. Ciuchini, G. D’Agostini, E. Franco, V. Lubicz, G. Martinelli, F. Parodi and P. Roudeau
منابع مشابه
ar X iv : h ep - p h / 05 12 01 4 v 1 1 D ec 2 00 5 The Unitarity Triangle through B d → ρ ± π ∓ decays
gies for determining the Unitarity Triangle in these modes. Computing the penguin parameters (r±,φ±) and the ratio of two trees (rt ,φt ) within QCD factorization yields a precise determination of (ρ̄ , η̄), reflected by a weak dependence on φ±, which is shown to be a second order effect, as in the Bd → π+π− system. Moreover, we find that the dependence on penguin amplitudes r± in Bd → ρ±π∓ is le...
متن کاملUnitarity Triangle parameters determination : where do we stand ?
In this note I review the current determination of the unitarity triangle parameters by using the theoretical and experimental informations available until summer 2000.
متن کاملar X iv : h ep - p h / 04 08 07 9 v 1 5 A ug 2 00 4 CKM - TRIANGLE ANALYSIS : Updates and Novelties for Summer 2004
Using the most recent determinations of several theoretical and experimental parameters, we update the Unitarity Triangle analysis in the Standard Model. The basic experimental constraints come from the measurements of εK , |Vub/Vcb|, and ∆md, the limit on ∆ms, and the measurement of the CP asymmetry in the B sector through the J/ψK0 channel. In addition we also include in our analysis the dire...
متن کاملar X iv : h ep - e x / 02 08 00 8 v 1 7 A ug 2 00 2 1 B 0 s Oscillation Results
BBd) is estimated to be 1.18 ± 0.04 −0.00 from Lattice QCD [3]. This implies that the ratio |Vts/Vtd| can be determined with an uncertainty smaller than that for |Vtd| [4]. In the Wolfenstein parameterization of the CKM matrix, we have ∆md ∝ |Vtd| 2 ≃ Aλ[(1 − ρ) + η] and ∆ms ∝ |Vts| 2 ≃ Aλ, where λ = 0.2237 ± 0.0033 and A = 0.819 ± 0.040 [5], but ρ and η are not well known. Studies of B d and B...
متن کاملar X iv : h ep - e x / 05 10 03 6 v 1 1 3 O ct 2 00 5 Sides of “ The ” Unitarity Triangle : Results from Belle and Babar
The principal goal of the B-factories is to test the CKM paradigm through measurements that overconstrain the shape of the so-called Unitarity Triangle. The sides of the triangle are evaluated through absolute values of several elements of the CKM matrix, so achieving high precision on these is an important aspect of the B-factory program. Recent results from Belle and Babar are presented.
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