Measurement of the neutral current coupling constants in neutrino and antineutrino interactions with deuterium

D. Allasia, C. Angelini, A. Baldini, M. Baldo-Ceolin, S. Barlag, L. Bertanza, A. Bigi, V. Bisi, F. Bobisut, T. Bolognese, A. Borg, E. Calimani, P. Capiluppi, R. Casali, S. Ciampolillo, J. Derkaoui, M. L. Faccini-Turluer, R. Fantechi, V. Flaminio, A. G. FrodesenD. Gamba, G. Giacomelli, A. Halsteinslid, A. Hornaes, H. Huzita, B. Jongejans, I. Lippi, M. Loreti, C. Louedec, G. Mandrioli, A. Marzari-Chiesa, A. Nappi, R. Pazzi, G. M. Pierazzini, L. Riccati, A. Romero, A. M. Rossi, P. Serra-Lugaresi, A. Tenner, G. W. van Apeldoorn, P. van Dam, D. Vignaud, C. Visser, R. Wigmans

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Abstract

We have measured neutral and charged current interactions of νμ and νμ on proton and neutron. From a combination of ratios we determine the neutral current chiral coupling constants. The results are u2L = 0.13 ± 0.03, d2L = 0.19 ± 0.03, u2R = 0.02 ± 0.02 and d2R = 0.00 ± 0.02. These results agree with the predictions of the standard SU(2) × U(1) model. The corresponding value of sin2θW is 0.20 ± 0.04.

Original languageEnglish
Pages (from-to)129-134
Number of pages6
JournalPhysics Letters B
Volume133
Issue number1-2
DOIs
StatePublished - Dec 8 1983

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