تقرير
Solving a Fine-Tuning Problem of the Standard Model through the Introduction of Vector-Like Quarks
| العنوان: | Solving a Fine-Tuning Problem of the Standard Model through the Introduction of Vector-Like Quarks |
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| المؤلفون: | Botella, F. J., Branco, G. C., Nebot, M., Rebelo, M. N., Silva-Marcos, J. I. |
| سنة النشر: | 2018 |
| المجموعة: | High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology |
| الوصف: | We emphasise that even in the extreme chiral limit where only the top and bottom quarks acquire mass, quark mixing is physically meaningful. This implies that the natural value of $|V_{13}|^2 + |V_{23}|^2$ is of order one, which is to be compared to its experimental value of order $10^{-3}$ . We show how this fine-tuning problem of the Standard Model can be solved through an extension of the Standard Model where vector-like quarks and a complex singlet are introduced, together with a flavour symmetry. The mixings of the light quarks are generated through the mixing of the vector-like quarks with the standard quarks. Comment: 8 pages. Talk given at Corfu Summer Institute 2017, School and Workshops on Elementary Particle Physics and Gravity, September 2017. To appear in conference proceedings |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1806.02755 |
| رقم الأكسشن: | edsarx.1806.02755 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |