Accurate measurement of the D0-D0bar mixing parameters
Abstract
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.
Cite
@article{arxiv.0708.0454,
title = {Accurate measurement of the D0-D0bar mixing parameters},
author = {Nita Sinha and Rahul Sinha and T. E. Browder and N. G. Deshpande and Sandip Pakvasa},
journal= {arXiv preprint arXiv:0708.0454},
year = {2008}
}
Comments
4 pages, minor changes, few references added