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Communication Dans Un Congrès Année : 2018

Flavor-singlet spectrum in multi-flavor QCD

Yasumichi Aoki
  • Fonction : Auteur
Tatsumi Aoyama
  • Fonction : Auteur
E. Bennett
Masafumi Kurachi
  • Fonction : Auteur
Toshihide Maskawa
  • Fonction : Auteur
Kei-Ichi Nagai
  • Fonction : Auteur
Hiroshi Ohki
  • Fonction : Auteur
Enrico Rinaldi
  • Fonction : Auteur
Akihiro Shibata
  • Fonction : Auteur
Koichi Yamawaki
  • Fonction : Auteur
Takeshi Yamazaki
  • Fonction : Auteur

Résumé

Studying SU(3) gauge theories with increasing number of light fermions is relevant both for understanding the strong dynamics of QCD and for constructing strongly interacting extensions of the Standard Model (e.g. UV completions of composite Higgs models). In order to contrast these many-flavors strongly interacting theories with QCD, we study the flavor-singlet spectrum as an interesting probe. In fact, some composite Higgs models require the Higgs boson to be the lightest flavor-singlet scalar in the spectrum of a strongly interacting new sector with a well defined hierarchy with the rest of the states. Moreover, introducing many light flavors at fixed number of colors can influence the dynamics of the lightest flavor-singlet pseudoscalar. We present the on-going study of these flavor-singlet channels using multiple interpolating operators on high-statistics ensembles generated by the LatKMI collaboration and we compare results with available data obtained by the Lattice Strong Dynamics collaboration. For the theory with 8 flavors, the two collaborations have generated configurations that complement each others with the aim to tackle the massless limit using the largest possible volumes.

Dates et versions

hal-02066128 , version 1 (13-03-2019)

Identifiants

Citer

Yasumichi Aoki, Tatsumi Aoyama, E. Bennett, Masafumi Kurachi, Toshihide Maskawa, et al.. Flavor-singlet spectrum in multi-flavor QCD. 35th International Symposium on Lattice Field Theory, Jun 2017, Granada, Spain. pp.08023, ⟨10.1051/epjconf/201817508023⟩. ⟨hal-02066128⟩
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