[NCTS Seminar - Particle Physics Journal Club] Dark Shower Searches with Electroweak Portals

  • Event Date: 2023-09-04
  • High energy phenomenology
  • Speaker: Prof. Hsin-Chia Cheng (UC Davis)  /  Host: Dr. Naoki Yamatsu
    Place: R517, New Physics Building, NTU

Title:Dark Shower Searches with Electroweak Portals
Time:2023/09/04 (Mon.) 12:30
Place:R517, New Physics Building, NTU

Dark sectors interacting feebly with the Standard Model (SM) are well-motivated and intensively studied in recent years. Confining non-abelian gauge groups (dark colors) are very typically contained in the dark sectors. Once a highly energetic dark colored particle is produced, it will shower and generate multiple light dark hadrons. If some of the dark hadrons decay back to SM particles, they produce interesting collider signals including semi-visible jets and displaced decay vertices. Current dark shower searches mostly based on models with high scale mediations. In these models, dark showers are very energetic and accompany by hard SM jets or particles which can be used to trigger the events. One the other hand, if the dark showers are mainly produced by the Z or Higgs decays, the final decay products are typically soft and hard to trigger in standard searches. They require special strategies, such as the data scouting in CMS, or other specialized detectors. In this talk, I will discuss these scenarios in dark sector models with electroweak portals and their constraints. Then survey their searches at various existing and future experiments.