Low Mass Di-Tau Analysis and Search for MSSM Higgs

Low Mass Di-Tau Analysis and Search for MSSM Higgs

We present the results of a search for a neutral MSSM Higgs boson decaying to a pair of tau leptons. The analyzed data sample corresponds to an integrated luminosity of approximately 200 pb^-1 of p,pbar collisions at sqrt(s) = 1.96 TeV. It was collected by the CDF detector during Run II of the Fermilab Tevatron. We select tau pair in which one of the taus decays hadronically and the other to electron or muon and neutrinos. We see no evidence of signal and perform a fit to the partially reconstructed di-tau mass to set limits on the product of Higgs production cross-section and its branching fraction to taus.

Contacts: Dongwook Jang, Anton Anastassov, and Amit Lath.
Data: Run II, 195 pb^-1
Documentation: PS, PDF

Plots and Tables:

Background and Signal Distributions with Analysis Cuts:
	The H_T distribution for signal and background. A cut at 50 GeV is used, EPS or GIF.
	The p_zeta versus p_zeta-visible distribution for pseudoscalar Higgs, EPS or GIF.
	The p_zeta versus p_zeta-visible distribution for W plus jets, EPS or GIF.
Hadronic Tau Track Multiplicity:
	The tau track multiplicity distribution for di-tau events with one leptonic and one hadronic tau decay, EPS or GIF.
Hadronic Tau Reconstructed Mass:
	The hadronic tau reconstructed mass distribution for di-tau events with one leptonic and one hadronic tau decay, EPS or GIF.
Hadronic Tau Transverse Momentum:
	The hadronic tau p_T distribution for di-tau events with one leptonic and one hadronic tau decay, EPS or GIF.
Di-Tau Missing Transverse Energy:
	The missing E_T distribution for di-tau events with one leptonic and one hadronic tau decay, EPS or GIF.
Di-Tau Total Transverse Energy Sum:
	The H_T distribution for di-tau events with one leptonic and one hadronic tau decay, EPS or GIF.
Visible Di-Tau Mass:
	The visible di-tau mass (linear scale) of events with one leptonic and one hadronic tau decay, EPS or GIF.
	The visible di-tau mass (log scale) of events with one leptonic and one hadronic tau decay, EPS or GIF.
Signal Efficiency:
	Acceptance * Efficiency for a pseudoscalar Higgs as function of Higgs mass, EPS or GIF.
Signal Di-Tau Mass Spectrum:
	Reconstructed di-tau mass for pseudoscalar Higgs of 115, 150, and 200 GeV/c**2, EPS or GIF.
Di-Tau Mass Spectrum Fit:
	Reconstructed di-tau mass of events in the search region, with expected background and a Higgs Monte Carlo with mass of 130 GeV/c**2, EPS, JPEG, or GIF.
	Reconstructed di-tau mass (log scale) of events in the search region, with expected background and a Higgs Monte Carlo with mass of 130 GeV/c**2, EPS, JPEG, or GIF.
Expected and Observed Number of Events:
	Expected and observed number of events in the signal region, PS or GIF.
Cross-Section Limits:
	Table of expected and observed 95% C.L. upper cross-section limits as function of MSSM Higgs mass, PS or GIF.
	Expected and observed 95% C.L. upper cross-section limit as function of MSSM Higgs mass, EPS or GIF.

Page page: http://www-cdf.fnal.gov/physics/exotic/r2a/20040610.ditau_mssmhiggs/index.html was last updated December 2nd, 2004 by Stephan Lammel.
Contact, Legal Notices, and Fermilab Policy on Computing