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CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-5045
DTSTART:20190221T203000Z
DURATION:PT1H0M0S
DTSTAMP:20260415T090728Z
LAST-MODIFIED:20190206T173730Z
LOCATION:5280 Chamberlin Hall
SUMMARY:Gravity safe\, electroweak natural axionic solution to strong 
 CP and SUSY mu problems\, Theory Seminar (High Energy/Cosmology)\, How
 ard Baer\, University of Oklahoma
DESCRIPTION:Particle physics models with Peccei-Quinn (PQ) symmetry br
 eaking as a consequence of supersymmetry (SUSY) breaking are attractiv
 e in that 
\nthey solve the strong CP problem with a SUSY DFSZ-like ax
 ion\, 
\nlink the SUSY breaking and PQ breaking intermediate mass scal
 es 
\nand can resolve the SUSY mu problem with a naturalness-required 
 
\nweak scale mu term whilst soft SUSY breaking terms inhabit the 
\nm
 ulti-TeV regime as required by LHC sparticle mass limits and 
\nthe Hi
 ggs mass measurement. <br>
\nOn the negative ledger\, models based on 
 global
\nsymmetries suffer a generic gravity spoliation problem. 
\nWe
  present two models based on the discrete R-symmetry 
\nZ_{24}^R-- whi
 ch may emerge 
\nfrom compactification of 10-d Lorentzian spacetime in
  string theory-- 
\nwhere the mu term and dangerous proton decay and R
 -parity 
\nviolating operators are either suppressed or forbidden 
\nw
 hile a gravity-safe PQ symmetry emerges as an accidental approximate 

 \nglobal symmetry leading to a solution to the strong CP problem 
\nan
 d a weak-scale/natural value for the mu term.
URL:https://www.physics.wisc.edu/events/?id=5045
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