Journal article
Measurement of the Lifetime Difference in [Formula presented] Meson Decays
K Abe, K Abe, R Abe, T Abe, I Adachi, BS Ahn, H Aihara, M Akatsu, Y Asano, T Aso, V Aulchenko, T Aushev, AM Bakich, Y Ban, S Behari, PK Behera, A Bondar, A Bozek, TE Browder, BCK Casey Show all
Physical Review Letters | AMER PHYSICAL SOC | Published : 2002
Abstract
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.