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26 April 2024 |
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Article overview
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Z-lineshape versus 4th generation masses | S. S. Bulanov
; V. A. Novikov
; L. B. Okun
; A. N. Rozanov
; M. I. Vysotsky
; | Date: |
30 Dec 2002 | Journal: | Phys.Atom.Nucl. 66 (2003) 2169-2177; Yad.Fiz. 66 (2003) 2219-2227 | Subject: | hep-ph | Affiliation: | ITEP, Moscow, Russia), A. N. Rozanov (CPPM, IN2P3, CNRS, Univ. Mediteranee, Marseilles, France and ITEP, Moscow, Russia), M. I. Vysotsky (ITEP, Moscow, Russia | Abstract: | The dependence of the Z-resonance shape on the location of the threshold of the Nar{N} production (N is the 4th generation neutrino) is analyzed. The bounds on the existence of 4th generation are derived from the comparison of the theoretical expression for the Z-lineshape with the experimental data. The 4th generation is excluded at 95% C. L. for m_N<46.7pm 0.2 GeV. | Source: | arXiv, hep-ph/0301268 | Services: | Forum | Review | PDF | Favorites |
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