### Abstract

Four fermion interactions appear in many models of Beyond Standard Model physics. In Technicolour and composite Higgs models Standard Model fermion masses can be generated by four fermion terms. They are also expected to modify the dynamics of the new strongly interacting sector. In particular in technicolour models it has been suggested that they can be used to break infrared conformality and produce a walking theory with a large mass anomalous dimension. We study the SU(2) gauge theory with 2 adjoint fermions and a chirally symmetric four fermion term. We demonstrate chiral symmetry breaking at large four fermion coupling and study the phase diagram of the model.

Original language | English |
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Article number | 231 |

Journal | Proceedings of Science |

Volume | Part F128557 |

Number of pages | 7 |

ISSN | 1824-8039 |

Publication status | Published - 2016 |

Event | 34th Annual International Symposium on Lattice Field Theory - University of Southampton, Southampton, United Kingdom Duration: 24. Jul 2016 → 30. Jul 2016 |

### Conference

Conference | 34th Annual International Symposium on Lattice Field Theory |
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Location | University of Southampton |

Country | United Kingdom |

City | Southampton |

Period | 24/07/2016 → 30/07/2016 |

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### Cite this

*Proceedings of Science*,

*Part F128557*, [231].

}

*Proceedings of Science*, vol. Part F128557, 231.

**Adjoint SU(2) with four fermion interactions.** / Rantaharju, Jarno; Drach, Vincent; Pica, Claudio; Sannino, Francesco.

Research output: Contribution to journal › Conference article › Research › peer-review

TY - GEN

T1 - Adjoint SU(2) with four fermion interactions

AU - Rantaharju, Jarno

AU - Drach, Vincent

AU - Pica, Claudio

AU - Sannino, Francesco

PY - 2016

Y1 - 2016

N2 - Four fermion interactions appear in many models of Beyond Standard Model physics. In Technicolour and composite Higgs models Standard Model fermion masses can be generated by four fermion terms. They are also expected to modify the dynamics of the new strongly interacting sector. In particular in technicolour models it has been suggested that they can be used to break infrared conformality and produce a walking theory with a large mass anomalous dimension. We study the SU(2) gauge theory with 2 adjoint fermions and a chirally symmetric four fermion term. We demonstrate chiral symmetry breaking at large four fermion coupling and study the phase diagram of the model.

AB - Four fermion interactions appear in many models of Beyond Standard Model physics. In Technicolour and composite Higgs models Standard Model fermion masses can be generated by four fermion terms. They are also expected to modify the dynamics of the new strongly interacting sector. In particular in technicolour models it has been suggested that they can be used to break infrared conformality and produce a walking theory with a large mass anomalous dimension. We study the SU(2) gauge theory with 2 adjoint fermions and a chirally symmetric four fermion term. We demonstrate chiral symmetry breaking at large four fermion coupling and study the phase diagram of the model.

M3 - Conference article

VL - Part F128557

JO - P o S - Proceedings of Science

JF - P o S - Proceedings of Science

SN - 1824-8039

M1 - 231

ER -