Evidence for charmed baryon “elastic” production in neutrino reactions at the CERN SPS期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Evidence for charmed baryon “elastic” production in neutrino reactions at the CERN SPS

Authors:	N. Armenise M.T. Fogli-Muciaccia S. Nuzzo J.P. Albanese A. Bouchakour P. Musset Ph. Busson B. Degrange U. Nguyen-Khac S. Bonetti D. Cavalli A. Pullia G. Carnesecchi Ph. Heusse J. Sleeman

Affiliation:	1. Istituto di Fisica dell''Università Bari, Italy;2. INFN, Bari, Italy;3. Istituto di Fisica dell''Università Milan, Italy;4. INFN, Milan, Italy

Abstract:	Evidence for charmed baryon “elastic” production is found in a sample of 55 000 charged-current neutrino interactions in the bubble chamber Gargamelle exposed to the SPS wide-band neutrino beam. The product of the average cross section times the branching ratio into modes including a Λ⁰ or a $K$ ⁰p system is found to be α·B=(14.3 ± 7.4) × 10^?40 cm² for ν+n reactions and α · B<3.3×10^?40 cm² (90% CL) for ν+p reactions.

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