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Measurement of the Lifetime Difference in [Formula presented] Meson Decays
Journal article   Peer reviewed

Measurement of the Lifetime Difference in [Formula presented] Meson Decays

K. Abe, K. Abe, R. Abe, T. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, M. Akatsu, Y. Asano, T. Aso, …
Physical Review Letters, Vol.88(16), p.6
2002

Abstract

Physics and Astronomy (all)
We report a measurement of the [Formula presented] mixing parameter [Formula presented] using [Formula presented] of data collected near the [Formula presented] resonance with the Belle detector at KEKB. [Formula presented] is measured from the lifetime difference of [Formula presented] mesons decaying into the [Formula presented] state and the [Formula presented]-even eigenstate [Formula presented]. We find [Formula presented], where the first error is statistical and the second is systematic, corresponding to a [Formula presented] confidence interval [Formula presented]. © 2002 The American Physical Society.

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