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Measurement of the CP-violation parameter sin(2beta) in B0 to J/psi-Kshort decays

G. Bauer
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Abstract

A sample of 400 $B^0_d/\bar{B}{^0_d} \to J/ψK^0_s$ decays collected in $\bar{p}p$ collisions by the CDF detector is used to directly measure the CP-violation parameter $\sin(2β)$. We find $\sin(2β) = 0.79 ^{+0.41}_{-0.44}$,favoring the standard model expectation of a large $CP$ violation in this $B^0$ decay mode.

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G. Bauer. 1999-08-19. Measurement of the CP-violation parameter sin(2beta) in B0 to J/psi-Kshort decays. https://arxiv.org/abs/hep-ex/9908055

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