I present the results of a search for pair production of scalar top quarks (~t1)
in an R-parity violating supersymmetric scenario using 322 pb_1 of pp collisions at
ps = 1.96 TeV collected by the upgraded Collider Detector at Fermilab. I assume
each ~t1 decays into a tau lepton and a b quark, with branching ratio B, and search
for final states containing either an electron or a muon from a leptonic tau decay, a
hadronically decaying tau lepton, and two or more jets. Two candidate events pass my
final selection criteria, consistent with the expectation from standard model processes.
I present upper limits on the cross section times branching ratio squared (~t1~t1)B2
as a function of the stop mass m(~t1). Assuming B = 1, I set a 95% confidence level
limit m(~t1) > 153 GeV=c2. These limits are also fully applicable to the case of a
pair produced third generation scalar leptoquark that decays into a tau lepton and a b
quark.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-2814 |
| Date | 15 May 2009 |
| Creators | Khotilovich, Vadim Gennadyevich |
| Contributors | Kamon, Teruki, Safonov, Alexei |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Dissertation, text |
| Format | electronic, application/pdf, born digital |
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