Search for new physics using high-mass tau pairs from 1.96 TeV pp collisions

Area of Science:

• High Energy Physics
• Particle Physics
• Collider Physics

Background:

• Anomalous production of tau lepton pairs can indicate new physics beyond the Standard Model.
• Previous searches have not focused on this specific signature at the Tevatron.

Purpose of the Study:

• To search for anomalous resonant production of tau lepton pairs using the CDF II Detector.
• To set limits on the production of new heavy scalar and vector particles decaying into tau lepton pairs.

Main Methods:

• Analysis of proton-antiproton collision data collected by the CDF II Detector.
• Data sample corresponds to 195 inverse femtobarns of integrated luminosity.
• Comparison of observed events with Standard Model background predictions.

Main Results:

• A total of 4 events were observed.
• The predicted number of Standard Model background events was 2.8 +/- 0.5.
• The observed excess is consistent with background expectations.

Conclusions:

• The search sets limits on the production of heavy particles decaying to tau lepton pairs.
• This analysis contributes to the ongoing search for new physics at the Tevatron.