An Analysis of a Minimal Vectorlike Extension of the Standard Model

作者：Beylin V; Bezuglov M; Kuksa V; Volchanskiy N

来源：Advances in High Energy Physics, 2017, 2017: 1765340.

DOI：10.1155/2017/1765340

<jats:p>We analyze an extension of the Standard Model with an additional<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mi>S</mml:mi><mml:mi>U</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn mathvariant="normal">2</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math>hypercolor gauge group keeping the Higgs boson as a fundamental field. Vectorlike interactions of new hyperquarks with the intermediate vector bosons are explicitly constructed. We also consider pseudo-Nambu–Goldstone bosons caused by the symmetry breaking<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M2"><mml:mi>S</mml:mi><mml:mi>U</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn mathvariant="normal">4</mml:mn><mml:mo stretchy="false">)</mml:mo><mml:mo>→</mml:mo><mml:mi>S</mml:mi><mml:mi>p</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn mathvariant="normal">4</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math>. A specific global symmetry of the model with zero hypercharge of the hyperquark doublets ensures the stability of a neutral pseudoscalar field. Some possible manifestations of the lightest states at colliders are also examined.</jats:p>

• 出版日期2017