Search for High-Mass Resonances Decaying into Leptons of Different Flavor ($e\mu$, $\mu\tau$, $e\tau$)

Search for High-Mass Resonances Decaying into Leptons of Different Flavor ($e\mu$, $\mu\tau$, $e\tau$) Public Page

We present a search for high-mass resonances decaying into two leptons of different flavor: $e\mu$, $e\tau$ and $\mu\tau$. These resonances are predicted by several models beyond the Standard Model, such as the R-parity-violating MSSM. The search is based on 1~${\rm fb^{-1}}$ of Tevatron Run II data collected with the CDF detector at $\sqrt{s}$ = $1.96$ TeV in proton anti-proton collisions.

Authors: Anadi Canepa, Nigel S. Lockyer, Pavel Murat and Yanjun Tu
Blessed: July 24th, 2008
Godparents:
Data: Run II, 1 fb^-1
Documentation:
- Main Note: CDF Note 9405
- Supporting notes:
CDF Note 9002
CDF Note 8809
CDF Note 8470
Public: Note CDF Note 9430 and Web Page

Blessed Plots and Tables:

Control regions (50 GeV/c^2 < M_ll < 110 GeV/c^2) in e#tau channel:


	Visible mass (M_ll) of e#tau. EPS or GIF


	Visible mass of #tau. EPS or GIF


	Number of tracks within 10 degree of #tau. EPS or GIF

Fitting the background (M_ll > 100 GeV/c^2):


	Fitting W (#mu#nv)+jets. Fitting function F=exp(p0-p1*pow(x-90,p2)). EPS or GIF


	Fitting dijets. Fitting function F=exp(p0-p1*pow(x-90,p2)). EPS or GIF


	Fitting W(#tau#nv)+jets. Fitting function F=exp(p0-p1*pow(x-90,p2)). EPS or GIF


	Fitting Z(#mu#mu). Fitting function F=exp(p0-p1*pow(x-90,p2)). EPS or GIF


	Fitting Z(#tau#tau). F=p0*pow(x-80,p1) EPS or GIF


	Fitting WW. Fitting function F=exp(p0-p1*pow(x-90,p2)). EPS or GIF


	Fitting ttbar. Fitting function F=exp(p0-p1*pow(x-90,p2)). EPS or GIF

Acceptance times ID efficiency of leptons


	CDF Default EPS or GIF


	Improved EPS or GIF

Signal acceptance


	Signal acceptance EPS or GIF

e#mu channel


	SM prediction and observation GIF


	mass cut applied to obtain the best limit on #sigma times BR of tau sneutrino. EPS or GIF


	95% CL. limits on #sigma times BR of tau sneutrino. EPS or GIF


	dimass of 2 leptons: the observation in data is consistent with the prediction of SM background. EPS or GIF


	integral number of events from the SM background and from data EPS or GIF

e#tau channel


	SM prediction and observation GIF


	mass cut applied to obtain the best limit on #sigma times BR of tau sneutrino. EPS or GIF


	95% CL. limits on #sigma times BR of tau sneutrino. EPS or GIF


	dimass of 2 leptons: the observation in data is consistent with the prediction of SM background. EPS or GIF


	integral number of events from the SM background and from data EPS or GIF

#mu#tau channel


	SM prediction and observation GIF


	mass cut applied to obtain the best limit on #sigma times BR of tau sneutrino. EPS or GIF


	95% CL. limits on #sigma times BR of tau sneutrino. EPS or GIF


	dimass of 2 leptons: the observation in data is consistent with the prediction of SM background. EPS or GIF


	integral number of events from the SM background and from data EPS or GIF

95% CL. limits on #sigma times BR of tau sneutrino


	95% CL. limits on #sigma times BR of tau sneutrino. GIF

This Page was last updated July 29th, 2008 by Yanjun Tu.
Contact, Legal Notices, and Fermilab Policy on Computing