Improved measurement of mixing-induced CP violation in the neutral B meson system
By T. B. Collaboration, K. Abe, et al. 2002
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We present an improved measurement of the standard model CP violation parameter sin 2phi(1) (also known as sin 2beta) based on a sample of 85x10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson is reconstructed in a J/psiK(S)(0), psi(2S)K-S(0), chi(c1)K(S)(0), eta(c)K(S)(0), J/psiK*(0), or J/psiK(L)(0) CP-eigenstate decay channel and the flavor of the accompanying B meson is identified from its decay products. From the asymmetry in the distribution of the time interval between the two B meson decay points, we obtain sin 2phi(1)=0.719+/-0.074(stat)+/-0.035(syst).
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/47971f425bd7f862a9cfaf4743ffdc18544960d5
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In Nuclear and High Energy Physics
Citations in the corpus
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