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- W3193648753 abstract "We present a series of measurements based on KL,S→π+π− and KL,S→π0π0 decays collected in 1996–1997 by the KTeV experiment (E832) at Fermilab. We compare these four K→ππ decay rates to measure the direct CP violation parameter Re(ε′/ε)=(20.7±2.8)×10−4. We also test CPT symmetry by measuring the relative phase between the CP violating and CP conserving decay amplitudes for K→π+π− (φ+−) and for K→π0π0 (φ00). We find the difference between the relative phases to be Δφ≡φ00−φ+−=(+0.39±0.50)°, and the deviation of φ+− from the superweak phase to be φ+−−φSW=(+0.61±1.19)°; both results are consistent with CPT symmetry. In addition, we present new measurements of the KL-KS mass difference and KS lifetime: Δm=(5261±15)×106ħs−1 and τS=(89.65±0.07)×10−12s. Received 6 August 2002DOI:https://doi.org/10.1103/PhysRevD.67.012005©2003 American Physical Society" @default.
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- W3193648753 date "2003-01-27" @default.
- W3193648753 modified "2023-10-16" @default.
- W3193648753 title "Measurements of direct<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>CP</mml:mi></mml:math>violation,<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>CPT</mml:mi></mml:math>symmetry, and other parameters in the neutral kaon system" @default.
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