$K_{\rm S}$ Semileptonic Decays and Test of CPT Symmetry with the KLOE Detector

Ks Semileptonic Decays and Test of Cpt Symmetry with the Kloe Detector∗

Measurement of the absolute branching ratios for semileptonic K ± decays with the KLOE detector

Using a sample of over 600 million φ → K+K− decays collected at the DAΦNE e+e− collider, we have measured with the KLOE detector the absolute branching ratios for the charged kaon semileptonic decays, K → π0e±ν(γ) and K → π0μ±ν(γ). The results, BR(Ke3) = 0.04965 ± 0.00038stat ± 0.00037syst and BR(Kμ3) = 0.03233 ± 0.00029stat ± 0.00026syst, are inclusive of radiation. Accounting for correlations...

Test of CPT symmetry in CP-violating B decays.

Considering that the existing experimental limit for CPT violation is still poor, we explore various possible ways to test CPT symmetry in CP -violating B decays at e+e− B factories. We find that it is difficult to distinguish between the effect of direct CP violation and that of CPT violation in the time-integrated measurements of neutral B decays to CP eigenstates such as ψKS and π +π−. Inste...

On Test of CPT Symmetry in CP -violating B Decays

Considering that the existing experimental limit for CPT violation is still poor, we explore various possible ways to test CPT symmetry in CP -violating B decays at e+e− B factories and hadron machines. We find that it is difficult to distinguish between the effect of direct CP violation and that of CPT violation in the time-integrated measurements of neutral B decays to CP eigenstates such as ...

Studies of K 0 S decays with the KLOE detector at DAΦNE

The KLOE detector at DAΦNE , the Frascati φ-factory, has collected about 30 pb by the end of year 2000. The φ(1020) meson decays about 34% of the times into a K0L-K 0 S pair; DAΦNE is therefore an exceptional source of almost monochromatic, tagged K0S particles, allowing for detailed studies of their more rare decays. The above mentioned integrated luminosity corresponds to about 30 millions pr...