arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1902.07214hep-phhep-exhep-th
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等级民主

Scalar Democracy

Christopher T. Hill, Pedro A. N. Machado, Anders E. Thomsen, Jessica Turner

摘要:

我们猜想,存在一个标量束缚态的每对基本费米子在紫外(“复合”)尺度,$Λ\gg v_{\text{weak}}$。这意味着有大量的普遍耦合的亚临界希格斯二重态。除了标准模型希格斯粒子外,所有的希格斯粒子都处于“休眠”状态,具有大的正平方质量,并且通过与标准模型希格斯粒子的混合,每个希格斯粒子都得到一个小的真空期望值。万有耦合,模重整化群运行效应,把味道问题转到希格斯系统的质量和混合上。与重费米子质量相关的双重态,$b,c, τ$可能位于多TeV的范围内,但可能在当前的LHC或高亮度和/或能量升级的LHC上观察到。在轻子部分,我们导致了中微子质量的希格斯跷跷板,以及可观察到的味道违反的必然过程。观察到的第一个连续的二重峰与质量为$\lesssim 3.5$ TeV的$\bar{b}b$偶联,将为该假设提供可信度。

英文摘要:

We conjecture that there exists a scalar bound state for every pair of fundamental fermions at a UV (`composite') scale, $Λ\gg v_{\text{weak}}$. This implies a large number of universally coupled, sub-critical Higgs doublets. All but the Standard Model Higgs are `dormant,' with large positive squared masses and each receives a small vacuum expectation values via mixing with the Standard Model Higgs. Universal couplings, modulo renormalization group running effects, flips the flavor problem into the masses and mixings of the Higgs system. Doublets associated with heavy fermion masses, $b,c, τ$ likely lie in the multi-TeV range, but may be observable at the current LHC, or a high-luminosity and/or an energy-upgraded LHC. In the lepton sector we are lead to a Higgs seesaw for neutrino masses, and corollary processes of observable flavor violation. The observation of the first sequential doublet coupled to $\bar{b}b$ with masses $\lesssim 3.5$ TeV would lend credence to the hypothesis.

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