BABAR Collaboration (Including:

). (2010) Measurement of D-0-(D)over-bar(0) mixing parameters using D-0 -> K-S(0)pi(+) pi(-) and D-0 -> (KSK+K-)-K-0 decays. Physical Review Letters, Vol.105 (No.8). article no. 081803 . ISSN 0031-9007

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Abstract

We report a direct measurement of D-0-(D) over bar (0) mixing parameters through a time-dependent amplitude analysis of the Dalitz plots of D-0 -> K-S(0)pi(+)pi(-) and, for the first time, D-0 -> (KSK+K-)-K-0 decays. The low-momentum pion pi(+)(s) in the decay D*(+) -> D-0 pi(+)(s) identifies the flavor of the neutral D meson at its production. Using 468.5 fb(-1) of e(+)e(-) colliding-beam data recorded near root s = 10.6 by the BABAR detector at the PEP-II asymmetric-energy collider at SLAC, we measure the mixing parameters x = [1.6 + 2.3(stat) +/- 1.2(syst) +/- 0.8(model)] X 10(-3), and y = [5.7 +/- 2.0(stat) +/- 1.3(syst) +/- 0.7(model)] X 10(-3). These results provide the best measurement to date of x and y. The knowledge of the value of x, in particular, is crucial for understanding the origin of mixing.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Physical Review Letters
Publisher:	American Physical Society
ISSN:	0031-9007
Date:	19 August 2010
Volume:	Vol.105
Number:	No.8
Number of Pages:	7
Page Range:	article no. 081803
Identification Number:	10.1103/PhysRevLett.105.081803
Status:	Peer Reviewed
Publication Status:	Published
Funder:	DOE (U.S.), NSF (U.S.), NSERC (Canada), CEA (France), CNRS-IN2P3 (France), BMBF (Germany), DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MICIIN (Spain), STFC (U.K.), European Union, A.P. Sloan Foundation (U.S.), Binational Science Foundation (U.S.-Israel)
URI:	http://wrap.warwick.ac.uk/id/eprint/5321

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