Li, J;
Zhang, ZP;
Schwartz, AJ;
Abe, K;
Abe, K;
Aihara, H;
Akatsu, M;
... Zontar, D; + view all
(2005)
Search for D-0-D-0(-) mixing in D-0 -> K+pi(-) decays and measurement of the doubly-Cabibbo-suppressed decay rate.
PHYS REV LETT
, 94
(7)
, Article 071801. 10.1103/PhysRevLett.94.071801.
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Abstract
We have searched for mixing in the Ddegrees-(D) over cap (0) D-0 system by measuring the decay-time distribution of D0 ! K(+)pi(-) decays. The analysis uses 90 fb(-1) of data collected by the Belle detector at the KEKB e(+) e(-) collider. We fit the decay-time distribution for the mixing parameters x(1) and y(1) and also for the parameter R-D, which is the ratio of the rate for the doubly-Cabibbo-suppressed decay D-0--> K(+)pi(-) to that for the Cabibbo-favored decay D-0 --> K- pi(+). We do these fits both assuming CP conservation and allowing for CP violation. We use a frequentist method to obtain a 95% C. L. region in the x(J2)- y(l) plane. Assuming no mixing, we measure R-D=(0: 381 +/- 0: 017 (+) (0.008)(-0.016))%.
| Type: | Article |
|---|---|
| Title: | Search for D-0-D-0(-) mixing in D-0 -> K+pi(-) decays and measurement of the doubly-Cabibbo-suppressed decay rate |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.94.071801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.94.071801 |
| Language: | English |
| Additional information: | © 2005 The American Physical Society |
| UCL classification: | UCL 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-pp.ucl.ac.uk/id/eprint/1308455 |
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