Tau-odd correlation on the Z0-Peak
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Tau-odd correlation on the Z0-Peak

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Tau-odd correlation on the Z0-Peak

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dc.contributor.author Bernabeu Alberola, José
dc.contributor.author Rius Dionis, Nuria
dc.date.accessioned 2015-03-03T11:31:24Z
dc.date.available 2015-03-03T11:31:24Z
dc.date.issued 1989
dc.identifier.uri http://hdl.handle.net/10550/42588
dc.description.abstract T-odd observables can be due either to T-violation or to unitarity corrections. We find a non-vanishing expectation value of a T-odd operator for from one-loop electroweak corrections to the resonant decay and from interference with the background. For unpolarized beams, chirality conservation allows only one relevant absorptive part of the interference between different amplitudes. We identify this unique T-odd effect as the spin correlation , where are the transverse (within the production plane) and normal (to the plane) spin components for f and , respectively. In the standard theory it is generated from the Z, W exchanges in the final vertex, from the Z-γ self-energy and from the tree-level Z-γ interference. Its value is −1.1% for e+e− → τ+τ− at 90°.
dc.language.iso eng
dc.relation.ispartof Physics Letters B, 1989, vol. 232, num. 1, p. 127-133
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Bernabeu Alberola, José; Rius Dionis, Nuria (1989) Tau-odd correlation on the Z0-Peak Physics Letters B 232 1 127 133
dc.subject Física
dc.title Tau-odd correlation on the Z0-Peak
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-03-03T11:31:24Z
dc.identifier.doi http://dx.doi.org/10.1016/0370-2693(89)90569-8
dc.identifier.idgrec 069065

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