A search at high energies for antineutrino-electron elastic scattering

• Published in: Physics letters. B 1979-07, Vol.84 (3), p.357-359
• Main Authors: Berge, J.P., Bogert, D., Hanft, R., Hamilton, D., Harigel, G., Malko, J.A., Moffatt, G.I., Nezrick, F.A., Wolfson, J., Ammosov, V.V., Denisov, A.G., Ermolov, P.F., Gapienko, G.S., Gapienko, V.A., Klukhin, V.I., Koreshev, V.I., Pitukhin, P.V., Sirotenko, V.I., Slobodyuk, E.A., Zaetz, V.G., Efremenko, V.I., Fedotov, A.V., Gorichev, P.A., Kaftanov, V.S., Kliger, G.K., Kolganov, V.Z., Krutchinin, S.P., Kubantsev, M.A., Makhljueva, I.V., Shekeljan, V.I., Shevchenko, V.G., Bell, J., Coffin, C.T., Louis, W., Roe, B.P., Ross, R.T., Seidl, A.A., Sinclair, D., Wang, E.
• Format: Article
• Language: English
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/0370-2693(79)90058-3

We have searched for candidates for the weak neutral leptonic current reaction ν μ+ e −→ ν μ+ e − in the Fermilab 15 ft bubble chamber filled with a heavy neon-hydrogen mix. Based on zero observed events of this type we find the 90% confidence level upper limit for the rate for this reaction relative to the total antineutrino charged current rate to be 3.9 × 10 −4 and, in the Weinberg-Salam model, sin 2 θ W ⩽ 0.37.