
pmid: 15524703
handle: 11588/420154 , 2434/184275 , 10281/389907 , 11577/2435020 , 11573/231499 , 11392/1211504 , 11567/213239 , 11568/188151 , 11384/2800 , 11585/551797 , 2318/122110 , 2318/48836 , 11586/25985 , 11563/5577
pmid: 15524703
handle: 11588/420154 , 2434/184275 , 10281/389907 , 11577/2435020 , 11573/231499 , 11392/1211504 , 11567/213239 , 11568/188151 , 11384/2800 , 11585/551797 , 2318/122110 , 2318/48836 , 11586/25985 , 11563/5577
We present a measurement of the direct CP violating asymmetry in the decay B0-->K+pi(-) using a data sample of 227x10(6) Upsilon(4S)-->BB decays collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at SLAC. We observe a total signal yield of nK-(pi(+))+nK+(pi(-))=1606+/-51 decays and measure the asymmetry (nK-(pi(+))-nK+(pi(-)))/(nK-(pi(+))+nK+(pi(-)))=-0.133+/-0.030(stat)+/-0.009(syst). The probability of observing such an asymmetry in the absence of direct CP violation is 1.3x10(-5), corresponding to 4.2 standard deviations.
Approximation theory; Calorimeters; Charged particles; Computer simulation; Crystals; Error analysis; Kinematics; Matrix algebra; Maximum likelihood estimation; Monte Carlo methods; Oscillations; Parameter estimation; Probability; Sampling; Solenoids, Neutral kaon, CP violation; beauty; meson, HEP; BaBar, -, NEUTRAL KAON, NEUTRAL KAON; BABAR; SLAC
Approximation theory; Calorimeters; Charged particles; Computer simulation; Crystals; Error analysis; Kinematics; Matrix algebra; Maximum likelihood estimation; Monte Carlo methods; Oscillations; Parameter estimation; Probability; Sampling; Solenoids, Neutral kaon, CP violation; beauty; meson, HEP; BaBar, -, NEUTRAL KAON, NEUTRAL KAON; BABAR; SLAC
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