Search for a charm changing neutral current in antineutrino interactions

Autor: P.F. Ermolov, V.I. Efremenko, S.P. Krutchinin, V.Z. Kolganov, V.G. Zaetz, V. V. Ammosov, D. Bogert, F. A. Nezrick, E. Solovodjuk, G.I. Moffatt, P. V. Pitukhin, V.I. Klukhin, V.S. Kaftanov, J. Wolfson, I. V. Makhlyueva, V. I. Koreshev, G.K. Kliger, A.V. Fedotov, G. S. Gapienko, C. T. Coffin, J. P. Berge, A.G. Denisov, A. A. Seidl, R. Hanft, D. Sinclair, R. T. Ross, J. Bell, V.I. Shekeljan, G. Harigel, V.I. Sirotenko, B. P. Roe, W. Louis, P.A. Gorichev, E. Wang, M. A. Kubantsev, J. A. Malko, V.G. Schevchenko, V. A. Gapienko
Rok vydání: 1979
Předmět:
Zdroj: Physics Letters B. 88:181-184
ISSN: 0370-2693
Popis: A search for charmed particle production in anti neutrino-nucleon neutral current interactions is reported. The recognition signature used was positron decay of the charmed particle; however all single positron events found can be attributed to known sources. Based upon a possible singal of one event, the 90% confidence level upper limit for the rate of neutral current charmed particle production with subsequent positron decay relative to charged current interactions above the charm threshold is 1.45×10 −3 . Assuming a branching ratio of 0.1, we find the corresponding limit for the right handed u c coupling is 1.9×10 −2 .
Databáze: OpenAIRE