BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-6736
DTSTART:20211208T190000Z
DTEND:20211208T200000Z
DTSTAMP:20260414T190848Z
LAST-MODIFIED:20211206T031632Z
LOCATION:Chamberlin 5280
SUMMARY:The cosmological moduli problem and naturalness\, Theory Semin
 ar (High Energy/Cosmology)\, Robert Wiley Deal\, University of Oklahom
 a and University of Wisconsin-Madison
DESCRIPTION:We examine the cosmological moduli problem and its connect
 ion to electroweak naturalness. The cosmological moduli problem (CMP) 
 comes in three parts:  1. Potential violation of Big-Bang nucleosynthe
 sis (BBN) constraints from late decaying moduli fields\, 2. The moduli
 -induced gravitino problem wherein gravitinos are overproduced and the
 ir decay violates BBN or dark matter overproduction bounds\, and 3. Th
 e moduli-induced lightest SUSY particle (LSP) overproduction problem. 
  We calculate the various two-body decay widths of a light modulus fie
 ld into MSSM particles and gravitinos within general supersymmetric mo
 dels.  We evaluate regions of gravitino mass vs modulus mass parameter
  space constrained by BBN\, by overproduction of gravitinos\, and by o
 verproduction of neutralino dark matter\, along with connections to na
 turalness.  We introduce a new solution to the CMP\, and list a variet
 y of other solutions to the CMP.
URL:https://www.physics.wisc.edu/events/?id=6736
END:VEVENT
END:VCALENDAR