KEK素粒子原子核研究所理論セミナー(永田 夏海 氏)

  • 分類 理論セミナー
  • 開始 2016/11/08(火)11:00
  • 終了 2016/11/08(火)12:00
  • 会場 研究本館1階会議室1
  • 講演タイトル A supersymmetric two-field relaxion model
  • 講演者 永田 夏海 氏 (東京大学)
  • 言語 英語/English
  • 連絡先 yamakei-AT-post.kek.jp
  • ウェブサイト
  • 食堂・売店 利用予定なし/0

概要

We discuss a supersymmetric version of a two-field relaxion model that naturalizes supersymmetric models with high SUSY-breaking. This exploits a relaxion mechanism that does not depend on QCD dynamics and where the relaxion potential barrier height is controlled by a second axion-like field. During the cosmological evolution, the relaxion rolls down with a nonzero value that breaks supersymmetry and scans the soft supersymmetric mass terms. Electroweak symmetry is broken after the soft masses become of order the supersymmetric Higgs mass term and causes the relaxion to stop rolling. This can explain the tuning in supersymmetric models, while preserving the QCD axion solution to the strong CP problem. We will also consider possible inflation models compatible with this framework