Accurate measurement of the D0-D0bar mixing parameters

Details Accurate measurement of the D0-D0bar mixing parameters Accurate measurement of the D0-D0bar mixing parameters

2007-08-03

arxiv.org/abs/0708.0454v2

Phys.Rev.Lett.99:262002,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, minor changes, few references added

Scientific paper

10.1103/PhysRevLett.99.262002

We propose a new method to determine the mass and width differences of the two D meson mass-eigenstates as well as the CP violating parameters associated with D^0-\bar{D}^0 mixing. We show that an accurate measurement of all the mixing parameters is possible for an arbitrary CP violating phase, by combining observables from a time dependent study of D decays to a doubly Cabibbo suppressed mode with information from a CP eigenstate. As an example we consider D^0-> K^{*0} \pi^0 decays where the K^{*0} is reconstructed in both K^+\pi^- and K_S\pi^0. We also show that decays to the CP eigenstate D-> K^+K^- together with D-> K^+\pi^- can be used to extract all the mixing parameters. A combined analysis using D^0-> K^{*0} \pi^0 and D-> K^+K^- can also be used to reduce the ambiguity in the determination of parameters.

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