Work supported in part by US Department of Energy contract DE-AC02-76SF00515 REVIEW OF CKM RESULTS FROM BABAR

نویسنده

  • E. I. Rosenberg
چکیده

In this parameterization the elements Vub = Aλ 3(ρ− iη) = |Vub|e and Vtd = Aλ(1 − (ρ + iη)) = |Vtd|e are complex and we can represent the unitarity triangle in the ρ− η plane, or normalizing the base of this triangle to 1, in the ρ̄− η̄ plane as shown in Figure 1 where (ρ̄ = (1− λ/2)ρ and η̄ = (1− λ/2)η. In the Wolfenstein approximation Vtb = 1 and Vts = −Vcb. The angles of the triangle, β = − arg (Vtd); γ = arg (V ∗ ub);α = π − γ − β, are determined by CP asymmetries. The sides and angles of this triangle parameterize the CKM matrix and in this report we present determinations of the sides and angles from the BABAR experiment. A separate report on measurements of the side labelled Rb will be given by V. Azzolini at this conference.

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تاریخ انتشار 2007