2,704 research outputs found
Test of CPT symmetry in cascade decays
Cascade mixing provides an elegant place to study the mixing.
We use this idea to study the CPT violation caused by mixing.
An approximation method is adopted to treat the two complex
mixing parameters and . A procedure to extract the parameters
and is suggested. The feasibility of exploring the CPT
violation and determining of and in the future B-factories and
LHC-B is discussed.Comment: Latex, 17 pages, some errors modifie
Determination of mixing angle through decays
We study decays, the quark content of
and the mixing angle of and . We calculate not only the
factorizable contribution in QCD facorization scheme but also the
nonfactorizable hard spectator corrections in QCDF and pQCD approach. We get
consistent result with the experimental data of and
predict the branching ratio of . We suggest two ways
to determine mixing angle . Using the experimental
measured branching ratio of , we can get the
mixing angle with some theoretical uncertainties. We
suggest another way to determine mixing angle using both
of experimental measured decay branching ratios to avoid theoretical uncertainties.Comment: arXiv admin note: substantial text overlap with arXiv:0707.263
The study of decays and determination of mixing angle
We study decays and suggest two methods to
determine the mixing angle. We calculate not only the
factorizable contribution in QCD facorization scheme but also the
nonfactorizable hard spectator corrections in pQCD approach. We get the
branching ratio of which is consistent with recent
experimental data and predict the branching ratio of to be . Two methods for determining
mixing angle are suggested in this paper. For the first
method, we get the mixing angle to be about
, which is in consistency with others in the literature. The
second method depends on less parameters so can be used to determine the
mixing angle with better accuracy but needs, as an input,
the branching ratio for which should be measured in
the near future.Comment: 16pages,4figure
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