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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-3438
DTSTART:20140909T200000Z
DTEND:20140909T210000Z
DTSTAMP:20260419T161528Z
LAST-MODIFIED:20140908T093436Z
LOCATION:5280 Chamberlin Hall
SUMMARY:Search for LFV Higgs decays with the CMS experiment\, Theory S
 eminar (High Energy/Cosmology)\, Maria Cepeda Hermida\, University of 
 Wisconsin
DESCRIPTION:The CMS experiment at the LHC performed the first direct s
 earch for lepton violating decays of the recently discovered Higgs bos
 on\, to a muon-tau pair. These decays are forbidden in the standard mo
 del\, but  arise naturally in beyond the standard scenarios such as mo
 dels with more than one Higgs doublet\, composite Higgs models\, Randa
 ll-Sundrum models\, and many others. The search is performed in the h-
 >mu tau_e and h->mu tau_had channels\, where tau_had and tau_e are tau
 s reconstructed in the hadronic and electronic decay channels\, respec
 tively. The data sample used in the search corresponds to an integrate
 d luminosity of 19.7 fb-1 collected in pp collisions at 8 TeV. The sen
 sitivity of the search is an order of magnitude better than the existi
 ng indirect limits. A slightly excess of data with a significance of 2
 .5 sigma is observed. This results constrain the branching ratio of h-
 >mu tau to < 1.57% at 95% CL. This branching ratio limit is then used 
 to constrain the Y(mu tau) Yukawa couplings.
URL:https://www.physics.wisc.edu/events/?id=3438
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