Extra generations and discrepancies of electroweak precision data

Article, Preprint English OPEN
Novikov , V A.; Okun , L B.; Rozanov , A N.; Vysotsky , M I.;
  • Publisher: Elsevier
  • Related identifiers: doi: 10.1016/S0370-2693(02)01240-6
  • Subject: [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] | High Energy Physics - Phenomenology | [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex]
    arxiv: High Energy Physics::Phenomenology

It is shown that additional chiral generations are not excluded by the latest electroweak precision data if one assumes that there is no mixing with the known three generations. In the case of ``heavy extra generations'', when all four new particles are heavier than $Z$... View more
  • References (15)
    15 references, page 1 of 2

    [1] M. Maltoni, V.A. Novikov, L.B. Okun, A.N. Rozanov, and M.I. Vysotsky, Phys. Lett. B476 (2000) 107.

    [2] V.A. Ilyin, M. Maltoni, V.A. Novikov, L.B. Okun, A.N. Rozanov, and M.I. Vysotsky, in: Proceedings of the XXX International Conference on High Energy Physics, Osaka-2000, World Scientific, v.2, p. 1209-1212.

    [3] M.W. Gru¨newald, Talk at LEP Physics Jamboree, CERN, July 10th, 2001; http://www.cern.ch/LEPEWWG.

    [4] H. Burkhardt and B. Pietrzyk, LAPP-EXP-2001-03.

    [5] J. Erler and P. Langacker, in: Review of Particle Physics, The European Physical Journal 15 (2000) 95.

    [6] V.A. Ilyin et al., Phys. Lett. B503 (2001) 126.

    [7] The ALEPH Collaboration, ALEPH 2001-010; CONF 2001-007 (2001); P.Abreu et al, DELPHI Collaboration, Eur.Phys.J. C 16 (2000) 53; M.Acciari et al., L3 Collaboration, Phys.Lett. B470 (1999) 268; G.Abbiendi et al., OPAL Collaboration, Eur.Phys.J. C 14 (2000) 73; see also the contributions to the Summer 2001 Conferences.

    [8] M.S. Chanowitz, hep-ph/0104024 (2001).

    [9] D. Choudhury, T.M.P. Tait and C.E.M. Wagner, hep-ph/0109097 (2001).

    [10] G. Altarelli, F. Caravaglios, G.F. Giudice, P. Gambino, G. Ridolfi, JHEP 0106 (2001) 018.

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