No abstract

Bubble chamber pictures have been scanned for the interactions of stopping K mesons in hydrogen. New déterminations of the ratios T,~n* K~p-»• charged partieles •y =-R = " K~p-S *jr~' *^ K~p-* ail final S tates for K~ meson interactions at rest, are presented, as well as the branching ratio ^ n;r^ Z+-> m t*, PTT" ' The values found for «g, 0.664 ± 0.011, and for B, 0.488 ± 0.008, are in agreement with previous results. On the other hand, two values, resulting from différent methods of analysis, have been found for 7, namely 2.38 + 0.04 and 2.35 ± 0.07. They agrée with one of the two previous précise measurements but are inconsistent with the other.

At the CERN SPS we have measured a deep inelastic μ± cross section asymmetry at momentum transfers Q2 ranging from 15 to 180GeV2. The result is in quantitative agreement with the WS/GIM standard electroweak model and allows to determine the muon neutral current couplings

No abstract

No abstract