Compact Muon Solenoid
LHC, CERN
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| CMS-PAS-HIG-14-005 | ||
| Search for Lepton Flavour Violating Decays of the Higgs Boson | ||
| CMS Collaboration | ||
| 2014 | ||
| Abstract: The first direct search for Lepton Flavor Violating Decays of the recently discovered Higgs boson using .7$ fb$^{-1}$ of $\sqrt{s}=8$ TeV data taken in 2012 using the $H \to \mu \tau_{e}$ and $H \to \mu \tau_{had}$ channels is described, where $\tau_{had}$ and $\tau_{e}$ are taus reconstructed in the hadronic and electronic decay channels respectively. The sensitivity of the search is an order of magnitude better than the existing indirect limits. A slight excess of signal events with a significance of 2.5$\sigma$ is observed. The local p-value of this excess at $M_{H}=126~\mathrm{GeV}$ is 0.007. Interpreted as a limit this results in a constraint of $B(H \to \mu \tau )<1.57\%$ at 95\% confidence level. The best fit branching fraction is $B(H \to \mu \tau )=(0.89^{+0.40}_{-0.37})\%$. The limit is subsequently used to constrain the $Y_{\mu\tau}$ Yukawa coupling. | ||
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Links:
CDS record (PDF) ;
inSPIRE record ;
Public twiki page ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, PLB 749 (2015) 337. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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