Conformal vs confining scenario in SU(2) with adjoint fermions

Particle Physics Theory seminar

Conformal vs confining scenario in SU(2) with adjoint fermions

  • Event time: 2:00pm
  • Event date: 28th September 2009
  • Speaker: Agostino Patella (Swansea University)
  • Location: Room 6206,

Event details

SU(2) with two Dirac fermions in the adjoint representation is a candidate as walking technicolor model for Electroweak Spontaneous Symmetry breaking. Understanding whether this theory is confining or IR-conformal is a very challenging problem, which can be addressed by means of numerical simulations. I will present the most recent spectrum measurements, both in the mesonic and gluonic sectors close to the chiral limit. Even for light constituent fermions the lightest glueballs are found to be lighter than the lightest mesons. I will discuss how this observation can be interpreted as a hint of (quasi-)conformal physics, and how the systematic errors still prevent us from drawing any solid conclusion.

Event resources

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..

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