The total yields of K^+(892), Sigma^+(1385) and Sigma^0 in neutrino-induced reactions at <E_nu> = 10 GeV

Agababyan, N. M.; Ammosov, V. V.; Atayan, M.; Grigoryan, N.; Gulkanyan, H.; Ivanilov, A. A.; Karamyan, Zh.; Korotkov, V. A.

The total yields of K^+(892), Sigma^+(1385) and Sigma^0 in neutrino-induced reactions at <E_nu> = 10 GeV

Authors

Description

Using the data obtained with SKAT bubble chamber, the total yields of $K^+(892)$, $Σ^+(1385)$ and $Σ^0$ are estimated for the first time in neutrino-induced reactions at moderate energies ($<E_ν>$ = 10.4 GeV). It is shown, that the recently observed \cite{ref1,ref2} enhancement of the $K^0$ and $Λ$ yields in $νA$ interactions (as compared to $νN$ interactions) is contributed only slightly by the $K^+(892)$ and $Σ^+(1385)$ production, respectively. The decay contribution to the $K^0$ and $Λ$ yields is found to be in qualitative agreement with higher energy ($<E_ν> \geq$ 40 GeV) data. It is shown, that the energy dependence of the $K^+(892)$ mean multiplicity in $νN$ interactions is approximately linear in the range of $<E_ν> \approx$ 10-60 GeV, while that for $Σ^0$ in $νA$ interactions (for $A$ = 20-21) is approximately logarithmic in the range of $<E_ν> \approx$ 10-150 GeV.
6 pages, 3 figures