Neutral strange particle exclusive production in charged current high-energy antineutrino interactions |
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Authors: | V V Ammosov A G Denisov G S Gapienko V A Gapienko V I Klyukhin V I Koreshev P V Pitukhin V I Sirotenko Z U Usubov V G Zaetz A E Asratyan A V Fedotov P A Goritchev S P Krutchinin M A Kubantsev I V Makhlueva V I Shekelyan V G Shevchenko A B Krebs |
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Institution: | 1. Institute for High Energy Physics, SU-142284, Serpukhov, USSR 2. Institute of Theoretical and Experimental Physics, SU-117259, Moscow, USSR 3. Moscow Physical Engineering Institute, SU-115409, Moscow, USSR
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Abstract: | The cross section of the quasi-elastic reactions \(\bar v_\mu p \to \mu ^ + \Lambda (\Sigma ^0 )\) in the energy range 5–100 GeV is determined from Fermilab 15′ bubble chamber antineutrino data. TheQ 2 analysis of quasi-elastic Λ events yieldsM A=1.0±0.3 GeV/c2 for the axial mass value. With zero µΛ K 0 events observed, the 90% confidence level upper limit \(\sigma (\bar v_\mu p \to \mu ^ + \Lambda {\rm K}^0 )< 2.0 \cdot 10^{ - 40} cm^2 \) is obtained. At the same time, we found that the cross section of reaction \(\bar v_\mu p \to \mu ^ + \Lambda {\rm K}^0 + m\pi ^0 \) is equal to \(\left( {3.9\begin{array}{*{20}c} { + 1.6} \\ { - 1.3} \\ \end{array} } \right) \cdot 10^{ - 40} cm^2 \) . |
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