Constraints from lepton universality at the z-peak on unified theories
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Constraints from lepton universality at the z-peak on unified theories

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Constraints from lepton universality at the z-peak on unified theories

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dc.contributor.author Bernabeu Alberola, José
dc.contributor.author Pilaftsis, Apostolos
dc.date.accessioned 2016-05-03T10:38:48Z
dc.date.available 2016-05-03T10:38:48Z
dc.date.issued 1995
dc.identifier.uri http://hdl.handle.net/10550/53252
dc.description.abstract We suggest the use of a universality-breaking observable based on lepton asymmetries as derived from the left-right asymmetry and the τ polarization at the Z peak, which can efficiently constrain the parameter space of unified theories. The new observable is complementary to the leptonic partial width differences and it depends critically on the chirality of a possible non-universal Z-boson coupling to like-flavour leptons. The LEP/SLC potential of probing universality violation is discussed in representative low-energy extensions of the Standard Model (SM) that could be derived by supersymmetric grand unified theories, such as the SM with left-handed and/or right-handed neutral isosinglets, the left-right symmetric model, and the minimal supersymmetric SM.
dc.language.iso eng
dc.relation.ispartof Physics Letters B, 1995, vol. 351, num. 1-3, p. 235-241
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Bernabeu Alberola, José; Pilaftsis, Apostolos (1995) Constraints from lepton universality at the z-peak on unified theories Physics Letters B 351 1-3 235 241
dc.subject Física
dc.title Constraints from lepton universality at the z-peak on unified theories
dc.type info:eu-repo/semantics/article
dc.date.updated 2016-05-03T10:38:49Z
dc.identifier.doi http://dx.doi.org/10.1016/0370-2693(95)00320-K
dc.identifier.idgrec 069047

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