Experimental bound on the charge radius of the electron neutrino

R. C. Allen, H. H. Chen, P. J. Doe, R. Hausammann, W. P. Lee, X. Q. Lu, H. J. Mahler, M. E. Potter, K. C. Wang, T. J. Bowles, R. L. Burman, R. D. Carlini, D. R.F. Cochran, J. S. Frank, E. Piasetzky, V. D. Sandberg, D. A. Krakauer, R. L. Talaga

Research output: Contribution to journalArticlepeer-review


A limit on the electron-neutrino charge radius |r| is derived from a measurement of the weak-neutral-current vector coupling constant gV obtained in electron-neutrino electron elastic scattering. The 90%-confidence interval for gV is -0.177<gV<0.187, which for sin2W=0.227 implies that the e mean-square charge radius is in the range -2.74×10-32<r2<4.88×10-32 cm2, or simply |r|<2.2×10-16 cm. This is the first experimental bound on the e charge radius, and is the same order of magnitude as bounds for structure.

Original languageEnglish
Pages (from-to)R1-R3
JournalPhysical review D
Issue number1
StatePublished - 1991


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