Measurement of D[superscript 0]-D̅[superscript 0] mixing and CP violation in two-body D[superscript 0] decays
Author(s)
Dujmic, Denis; Sciolla, Gabriella; Cowan, Ray F
DownloadLees-2013- and CP violation in two-body.pdf (1021.Kb)
PUBLISHER_POLICY
Publisher Policy
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Terms of use
Metadata
Show full item recordAbstract
We present a measurement of D[superscript 0]-D̅[superscript 0] mixing and CP violation using the ratio of lifetimes simultaneously extracted from a sample of D[superscript 0] mesons produced through the flavor-tagged process D[superscript *+]→D[superscript 0]π[superscript +], where D[superscript 0] decays to K[superscript ∓]π[superscript ±], K[superscript -]K[superscript +], or π[superscript -]π[superscript +], along with the untagged decays D[superscript 0]→K[superscript ∓]π[superscript ±] and D[superscript 0]→K[superscript -]K[superscript +]. The lifetimes of the CP-even, Cabibbo-suppressed modes K[superscript -]K[superscript +] and π[superscript -]π[superscipt +] are compared to that of the CP-mixed mode K[superscript ∓]π[superscript ±] in order to measure y[subscript CP] and ΔY. We obtain y[subscript CP]=[0.72±0.18(stat)±0.12(syst)]% and ΔY=[0.09±0.26(stat)±0.06(syst)]%, where ΔY constrains possible CP violation. The y[subscript CP] result excludes the null mixing hypothesis at 3.3σ significance. This analysis is based on an integrated luminosity of 468 fb[superscript -1] collected with the BABAR detector at the PEP-II asymmetric-energy e[superscript +]e[superscript -] collider.
Date issued
2013-01Department
Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review D
Publisher
American Physical Society
Citation
Lees, J. P. et al. “Measurement of D^{0}-D[over ¯]^{0} Mixing and CP Violation in Two-body D^{0} Decays.” Physical Review D 87.1 (2013). © 2013 American Physical Society
Version: Final published version
ISSN
1550-7998
1089-4918