Neutral strange particle production in neutrino and antineutrino charged-current interactions on neon.

D Deprospo ,M Aderholz,S Wainstein,M M Mobayyen,N Schmitz,G Myatt,H Wachsmuth,I Erofeeva ,H C Ballagh ,H Akbari ,J Lys ,L N Smirnova ,Peter Faulkner ,V K Gupta ,V.i Moskalev ,M Neveu ,H Foeth ,E B Brucker ,V Z Peterson ,M A Jabiol ,Tapan K Chatterjee ,H A Rubin ,R J Cence ,P Ermolov ,M Kubantsev ,M Kalelkar ,G Jones ,D Passmore ,P Stamer ,P Jacques ,E F Clayton ,J B Singh ,S Willocq ,T Kafka ,A Napier ,L Verluyten ,V M Korablev ,M Lauko ,S Sambyal ,M Barth ,P Kasper ,A Andryakov ,V S Murzin ,E De Wolf ,A.e Asratyan ,V Kaftanov ,N Kameswara Rao ,G Harigel ,J Hanlon ,K E Varvell ,Olga Lukina ,I S Mittra ,W Smart ,R Naon ,P Marage ,Devanand ,P P Allport ,J.p Baton ,H H Bingham ,R J Plano ,S.i Lyutov ,V V Ammosov ,Sweta Singh ,W B Fretter ,J M Kohli ,C Coutures ,R A Burnstein ,J Moreels ,P Nailor ,R H Milburn ,S Yu Sivoklokov ,V Jain ,G Gapienko ,J Sacton ,Michael D Jones ,J Schneps ,F A Harris ,D R O Morrison ,M Peters ,S Ryasakov ,G Corrigan ,E L Koller ,V D Kobrin ,A Ivanilov ,S K Badyal ,G.p Yost

doi:10.1103/physrevd.50.6691

Abstract

The production of the neutral strange particlesK0, Λ and\(\bar \Lambda \) invp and\(\bar vp\) charged current interactions is studied in an experiment with the Big European Bubble Chamber. Mean multiplicities are measured as a function of the event variablesEv,W2 andQ2 and of the hadron variablesxF,z andp T 2 .K*± (892) and∑*± (1385) signals are observed, whereas there is no evidence for∑*- (1385) production invp scattering. Forward, backward and total mean multiplicities are found to compare well with the predictions of an empirical model for deep-inelastic reactions in the case of the strange mesonsK0 andK*± (892) but less so for the strange baryons Λ,\(\bar \Lambda \) and∑*± (1385). The strange baryon multiplicities are used to obtain the decuplet to octet baryon production ratio and to assess the probabilities of auu orud system to break up.

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