- Autor(in)
- Referenz
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10 L. Alvarez-Gauàe, C. Gomez, G. Sierra, Phys. Lett. B 220 (1989) 142
11 V. P. Gusymin, V. A. Miransky, I. A. Shovkovy, ITP-95-02-E, hep-ph/9501304
1 A. Sirlin, Comm. Nucl. Part. Phys. 21 (1994) 227
2 U. Baur, H. Fritzsch, Phys. Lett. B 134 (1984) 105
3 R. R. Mendel, V. A. Miransky, Phys. Lett. B 268 (1991) 384;
4 R. Bönisch, Phys. Lett. B 268 (1991) 394;
5 H. Fritzsch, Proceedings 1990 Int. Workshop on Strong Coupling Gauge Theories and Beyond, Nagoya, Japan, 28 - 31 July 1990
6 R. N. Mohapatra, G. Senjanovic, Phys. Rev. D 12 (1975) 1502; also 1st Ref. [4]
7 For an introduction see e. g. M. Ruiz-Altaba, UGVA-DPT-1993-10-838, hep-th 9311069
8 T. L. Curtright, C. K. Zachos, Phys. Lett. B 243 (1990) 237
9 M. A. Martin-Delgado, J. Phys. A 24, (1991) L807
M. Bando, T. Kugo, K. Suehiro, Prog. Theor. Phys. 85 (1991) 1299
V. N. Gribov, Phys. Lett. B 336 (1994) 243
- Seitenbereich
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0345 - 0353
- Schlagwort(e)
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<KWD>Electroweak interaction
Charge, U(1)
Mass difference
- Zusammenfsg.
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The minimal Standard Model exhibits a nontrivial chiral <I>U</I>(2) symmetry if the VEV and the hypercharge splitting Δ = (<I>y</I><sub>R</sub><sup>u</sup>-<I>y</I><sub>R</sub><sup>d</sup>)/2 of right-handed leptons (quarks) in a family vanish and <I>Q</I> = <I>T</I><sub>0</sub> + <I>Y</I> independently in each helicity sector. As a generalization, we start with <I>SU</I>(2)<sub><I>L</I></sub> × <I>SU</I>(2)<sub><I>R</I></sub> × <I>U</I>(1)<sub>(<I>B-L</I>)</sub> and introduce Δ as a continuous parameter which is a measure of explicit symmetry breakdown. Values 0 Δ 1/2 take the neutral generator of the isospin ½ representation to the singlet representation, i.e. ‘deformes’ the LR representation into the minimal Standard one. The corresponding classical <I>O</I>(3)-breaking term is a magnetic field perpendicular to the <I>x</I><sub>3</sub>-axis. A simple mapping on the fundamental Drinfeld-Jimbo <I>q</I>-deformed <I>SU</I>(2) representation is given.
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