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Limits on D-0-(D)over-bar(0) mixing and CP violation from the ratio of lifetimes for decay to K-pi(+), K-K+, and pi(-)pi(+)

Aubert, B; Barate, R; Boutigny, D; Gaillard, JM; Hicheur, A; Karyotakis, Y; Lees, JP; ... BABAR Collaboration, ; + view all (2003) Limits on D-0-(D)over-bar(0) mixing and CP violation from the ratio of lifetimes for decay to K-pi(+), K-K+, and pi(-)pi(+). PHYS REV LETT , 91 (12) , Article 121801. 10.1103/PhysRevLett.91.121801. Green open access

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Abstract

We present a measurement of D-0-(D) over bar (0) mixing parameters using the ratios of lifetimes extracted from samples of D-0 mesons decaying to K(-)pi(+), K-K+, and pi(-)pi(+). Using 91 fb(-1) of data collected by the BABAR detector at the PEP-II asymmetric-energy B Factory, we obtain a value Y=[0.8+/-0.4(stat.)(-0.4)(+0.5)(syst.)]%, which, in the limit of CP conservation, corresponds to the mixing parameter y=DeltaGamma/2Gamma. Using the difference in lifetimes of D-0 and (D) over bar (0) mesons, we obtain the CP-violation parameter DeltaY=[-0.8+/-0.6(stat.)+/-0.2(syst.)]%.

Type: Article
Title: Limits on D-0-(D)over-bar(0) mixing and CP violation from the ratio of lifetimes for decay to K-pi(+), K-K+, and pi(-)pi(+)
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.91.121801
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.91.121801
Language: English
Additional information: © 2003 The American Physical Society
Keywords: D-MESON SYSTEM
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Brain Repair and Rehabilitation
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1303631
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