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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.citation | 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.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.subject | Física | |
| dc.title | Constraints from lepton universality at the z-peak on unified theories | |
| dc.type | journal article | es_ES |
| dc.date.updated | 2016-05-03T10:38:49Z | |
| dc.identifier.doi | 10.1016/0370-2693(95)00320-K | |
| dc.identifier.idgrec | 069047 | |
| dc.rights.accessRights | open access | es_ES |
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