Bino-wino coannihilation as a prediction in the E7 unification of families
説明
<jats:title>A<jats:sc>bstract</jats:sc> </jats:title> <jats:p>We study the phenomenological consequences of the supersymmetric (SUSY) <jats:italic>E</jats:italic> <jats:sub>7</jats:sub> <jats:italic>/</jats:italic>SU(5) <jats:italic>×</jats:italic> U(1)<jats:sup>3</jats:sup> non-linear sigma model coupled to supergravity, where the three gen- erations of quark and lepton chiral multiplets appear as (pseudo) Nambu Goldstone (NG) multiplets, that is, the origin of the three families is explained. To break SUSY, we intro- duce a SUSY breaking field charged under some symmetry avoiding the Polonyi problem. The gaugino mass spectrum is almost uniquely determined when one requires the electroweak vacuum to be (meta)stable: it would be a miracle that the mass difference between the bino and wino turns out to be within <jats:inline-formula> <jats:alternatives> <jats:tex-math>$$ \mathcal{O} $$</jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>O</mml:mi> </mml:math> </jats:alternatives> </jats:inline-formula>(1)% at the low energy. Thus, a bino-wino coannihilation is naturally predicted, which can explain the correct relic abundance of dark matter. Moreover, we find that the bottom-tau Yukawa couplings and the gauge couplings are unified up to <jats:inline-formula> <jats:alternatives> <jats:tex-math>$$ \mathcal{O} $$</jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>O</mml:mi> </mml:math> </jats:alternatives> </jats:inline-formula>(1)% in most of the viable region. This scenario can be fully tested at the LHC and future collider experiments since the gauginos and some of the pseudo-NG bosons are light. An axion-like multiplet, which can be identified with the QCD axion, is also predicted.</jats:p>
収録刊行物
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- Journal of High Energy Physics
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Journal of High Energy Physics 2019 (12), 169-, 2019-12
Springer Science and Business Media LLC
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キーワード
- Cosmology and Nongalactic Astrophysics (astro-ph.CO)
- FOS: Physical sciences
- QC770-798
- General Relativity and Quantum Cosmology (gr-qc)
- General Relativity and Quantum Cosmology
- High Energy Physics - Experiment
- High Energy Physics - Phenomenology
- High Energy Physics - Experiment (hep-ex)
- High Energy Physics - Phenomenology (hep-ph)
- Supersymmetry Phenomenology
- Nuclear and particle physics. Atomic energy. Radioactivity
- Astrophysics - Cosmology and Nongalactic Astrophysics
詳細情報 詳細情報について
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- CRID
- 1361694365613120896
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- ISSN
- 10298479
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- 資料種別
- journal article
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- データソース種別
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- Crossref
- KAKEN
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