論文

2017年12月14日

Spontaneous SUSY breaking without R-symmetry in supergravity

Phys. Rev. D 97, 055015 (2018)
  • Nobuhiro Maekawa
  • ,
  • Yuji Omura
  • ,
  • Yoshihiro Shigekami
  • ,
  • Manabu Yoshida

記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevD.97.055015

We discuss spontaneous supersymmetry (SUSY) breaking in a model with an<br />
anomalous $U(1)_A$ symmetry. In this model, the size of the each term in the<br />
superpotential is controlled by the $U(1)_A$ charge assignment and SUSY is<br />
spontaneously broken via the Fayet-Iliopoulos of $U(1)_A$ at the meta-stable<br />
vacuum. In the global SUSY analysis, the gaugino masses become much smaller<br />
than the sfermion masses, because an approximate R-symmetry appears at the SUSY<br />
breaking vacuum. In this paper, we show that gaugino masses can be as large as<br />
gravitino mass, taking the supergravity effect into consideration. This is<br />
because the R-symmetry is not imposed so that the constant term in the<br />
superpotential, which is irrelevant to the global SUSY analysis, largely<br />
contributes to the soft SUSY breaking terms in the supergravity. As the<br />
mediation mechanism, we introduce the contributions of the field not charged<br />
under $U(1)_A$ and the moduli field to cancel the anomaly of $U(1)_A$. We<br />
comment on the application of our SUSY breaking scenario to the GUT models.

リンク情報
DOI
https://doi.org/10.1103/PhysRevD.97.055015
arXiv
http://arxiv.org/abs/arXiv:1712.05107
URL
http://arxiv.org/abs/1712.05107v1
ID情報
  • DOI : 10.1103/PhysRevD.97.055015
  • arXiv ID : arXiv:1712.05107

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