Senior Thesis

Search for Excited Muon Production Using the Dimuon + Photon Signature at CDF in Run II

Edward Daverman

April 11, 2005

Thesis Committee: Ashutosh Kotwal, Al Goshaw, Ronen Plesser, Calvin Howell  (exofficio non-voting member)

ABSTRACT:  Data taken from Run II at CDF are analyzed in search of evidence of the production of excited muons. Such a discovery would indicate the existence of lepton substructure. We search for excited muons which are produced according to the reaction p + pbar → m* + m -> mg + m. We search for mmg events in the Run II data in a contact-interaction model and a gauge-mediated model. The central region of the CDF detector is used for muon detection. Both the central and plug region of the detector are studied for photon detection, but only central photons are used in the data analysis presented here. All candidate events are consistent with the predicted number from backgrounds. Therefore a 95% confidence level cross-section limit is calculated, and from this, the m* mass limit is found.

Here is the thesis in PDF: EDaverman_thesis.pdf (about 0.97 MBytes)