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Measurement of the lifetime difference in D0 meson decays |
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| Authors: | Abe K Abe K Abe R Abe T Adachi I Ahn Byoung Sup Aihara H Akatsu M Asano Y Aso T Aulchenko V Aushev T Bakich A M Ban Y Behari S Behera P K Bondar A Bozek A Browder T E Casey B C K Chao Y Cheon B G Chistov R Choi Y Dong L Y Eidelman S Eiges V Fang F Fujii H Fukunaga C Fukushima M Gabyshev N Garmash A Gershon T Gordon A Guo R Haba J Hamasaki H Hanagaki K Handa F Hara K Hara T Hastings N C Hayashii H Hazumi M Heenan E M Higuchi I Higuchi T Hojo T Hokuue T Hoshi Y Hoshina K Hou S R Hou W-S Hsu S-C Huang H-C Igarashi Y Iijima T Ikeda H Inami K Ishikawa A Ishino H Itoh R Iwasaki H Iwasaki Y |
| Institution: | High Energy Accelerator Research Organization (KEK), Tsukuba. |
| Abstract: | We report a measurement of the D0-D macro(0) mixing parameter y(CP) using 23.4 fb(-1) of data collected near the Upsilon(4S) resonance with the Belle detector at KEKB. y(CP) is measured from the lifetime difference of D0 mesons decaying into the K(-)pi(+) state and the CP-even eigenstate K(-)K(+). We find y(CP) = (-0.5+/-1.0(+0.7)(-0.8))x10(-2), where the first error is statistical and the second is systematic, corresponding to a 95% confidence interval -0.030 |
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