H. K. Park
Published 2001-10-16Version 1
Using data collected with the HyperCP (E871) spectrometer during the 1997 fixed-target run at Fermilab, we report the first observation of the decay K- -> pi- mu+ mu- and new measurements of the branching ratios for K+/- -> pi+/- mu+ mu- . By combining the branching ratios for the K+ and K- decays, we measure the ratio (K+/- -> pi+/- mu+ mu-)/(K+/- -> all) = (9.8 +/- 1.0 +/- 0.5)x10^(-8). The CP asymmetry between the K+ and K- decay modes = -0.02 +/- 0.11 +/- 0.04.
Comments: 4 pages, 4 figures, submitted to PRL
Journal: Phys.Rev.Lett.88:111801,2002
Measurements of Inclusive and Exclusive B Decays to Charmonium with BABAR
First Observation of B -> D(*) rho', rho' -> omega pi-
Amplitude analysis of the decay $\overline{B}^0 \to K_{S}^0 π^+ π^-$ and first observation of the CP asymmetry in $\overline{B}^0 \to K^{*}(892)^- π^+$
