Theory Seminar (High Energy/Cosmology) |
Events During the Week of February 17th through February 24th, 2019
Monday, February 18th, 2019
- No events scheduled
Tuesday, February 19th, 2019
- No events scheduled
Wednesday, February 20th, 2019
- No events scheduled
Thursday, February 21st, 2019
- Gravity safe, electroweak natural axionic solution to strong CP and SUSY mu problems
- Time: 2:30 pm
- Place: 5280 Chamberlin Hall
- Speaker: Howard Baer, University of Oklahoma
- Abstract: Particle physics models with Peccei-Quinn (PQ) symmetry breaking as a consequence of supersymmetry (SUSY) breaking are attractive in that
they solve the strong CP problem with a SUSY DFSZ-like axion,
link the SUSY breaking and PQ breaking intermediate mass scales
and can resolve the SUSY mu problem with a naturalness-required
weak scale mu term whilst soft SUSY breaking terms inhabit the
multi-TeV regime as required by LHC sparticle mass limits and
the Higgs mass measurement.
On the negative ledger, models based on global symmetries suffer a generic gravity spoliation problem. We present two models based on the discrete R-symmetry Z_{24}^R-- which may emerge from compactification of 10-d Lorentzian spacetime in string theory-- where the mu term and dangerous proton decay and R-parity violating operators are either suppressed or forbidden while a gravity-safe PQ symmetry emerges as an accidental approximate global symmetry leading to a solution to the strong CP problem and a weak-scale/natural value for the mu term. - Host: Vernon Barger
Friday, February 22nd, 2019
- No events scheduled