Opposite-sign dilepton production inνμinteractions
| ISSN: | 0556-2821 |
|---|---|
| DOI: | 10.1103/physrevd.32.531 |
| Přístupová URL adresa: | https://explore.openaire.eu/search/publication?articleId=doi_________::4b04bcb24a97a046d376ed984e54698d https://doi.org/10.1103/physrevd.32.531 |
| Rights: | CLOSED |
| Přírůstkové číslo: | edsair.doi...........4b04bcb24a97a046d376ed984e54698d |
| Autor: | N. P. Samios, H.G. Kirk, N. J. Baker, D. Caroumbalis, M. Tanaka, M. Kalelkar, R. Hylton, M. Bregman, K. Shastri, A. M. Cnops, Gaston Ormazabal, H. French, L. D. Chen, Robert B. Palmer, P. L. Connolly, S.A. Kahn, A. C. Schaffer, M. J. Murtagh, J. Spitzer, M. Hibbs, J. T. Liu, J. Okamitsu, C. Baltay |
| Rok vydání: | 1985 |
| Předmět: | |
| Zdroj: | Physical Review D. 32:531-540 |
| ISSN: | 0556-2821 |
| DOI: | 10.1103/physrevd.32.531 |
| Popis: | We report on a high-statistics bubble-chamber experiment using the Fermilab 15-ft bubble chamber filled with a heavy neon/hydrogen mixture exposed to a wide-band neutrino beam. In a sample of 106 000 ..nu../sub ..mu../ interactions 249 events with a positron (P/sub e//sup +/>0.3 GeV/c) and a negative muon were observed. After corrections, the rate for opposite-sign dilepton production for ..nu../sub ..mu../ charged-current events is (0.52 +- 0.09)%. The E/sub ..nu../ dependence of this rate from threshold to roughly-equal200 GeV is presented. The kinematic distributions and strange-particle content of the dilepton events are consistent with those expected from charm-particle production in neutrino interactions. A total of 58 neutral strange particles (..lambda -->..p..pi../sup -/, K/sub S//sup 0/..--> pi../sup +/..pi../sup -/)= are observed in these events, where less than 16 are expected from conventional charged-current interactions. The presence of a significant excess of ..lambda..'s is evidence for substantial charmed-baryon production. |
| Databáze: | OpenAIRE |
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