On one-loop electroweak corrections to neutrino-electron elastic scattering

• Published in: Nuclear physics. B Vol. 246; no. 2; pp. 221 - 230
• Main Authors: Bardin, D.Yu, Dokuchaeva, V.A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 12.11.1984
• ISSN: 0550-3213; 1873-1562
• DOI: 10.1016/0550-3213(84)90293-1

The one-loop electroweak radiative corrections to the spectrum with respect to electromagnetic energy deposition y = Evise.m./Eν for elastic νe(νe)e and νμ(νμ) e scattering are calculated within the standard SU(2)L ⊗ U(1) theory. The quantity Evise.m. = Eν − Eν' (Eν and Eν' are initial and final neutrino energies in the laboratory system) is equal, to a good approximation, to the visible energy deposited in an electromagnetic calorimeter commonly used for the identification of the elastic neutrino-electron scattering. It is shown that for Eν ⪅ 1000 GeV the radiative correction δ (Eν, y) is rather small (⪅3%) and depends weakly on y in contrast to the usually considered in terms of the variable y = E'e/Eν (E'e is the final electron laboratory energy), δ (Eν, y), which is rather large (up to 10%) and dependes violently on y. It is shown also that for sin2θw = 0.20−0.23 one-loop corrections to the cross-section ratio R = σνe/σνe are negligible as compared both with current and proposed experimental errors.