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arXiv 0709.4202hep-ph
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无双三重态分裂的SUSY多步统一

SUSY Multi-Step Unification without Doublet-Triplet Splitting

Jurgen Reuter

摘要:

在弦启发的超对称大统一理论中,物质-希格斯统一预言了希格斯多重态中有色态的存在,并要求额外的两代希格斯类场(“unhiggses”)。如果这些态都存在于TeV尺度附近,规范耦合统一则表明存在两个不同的尺度,10^15 GeV时出现右手中微子和Pati-Salam对称性,10^18 GeV时实现完全统一。重子数守恒,虽然不能保证,但可以自然地从潜在的味对称性中产生。对撞机的特征和暗物质物理学可能与传统的MSSM截然不同。

英文摘要:

Matter-Higgs unification in string-inspired supersymmetric Grand Unified Theories predicts the existence of colored states in the Higgs multiplets and calls for two extra generations of Higgs-like fields ('unhiggses'). If these states are present near the TeV scale, gauge-coupling unification points to the existence of two distinct scales, 10^15 GeV where right-handed neutrinos and a Pati-Salam symmetry appear, and 10^18 GeV where complete unification is achieved. Baryon-number conservation, while not guaranteed, can naturally emerge from an underlying flavor symmetry. Collider signatures and dark-matter physics may be drastically different from the conventional MSSM.

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