Measurement of the Top Quark Mass in the Di-lepton Channel using the Dalitz-Goldstein Method.
Hare, Matthew.
2011
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Abstract: This dissertation describes a measurement of the mass of the top
quark using a method developed by G. Goldstein and R.H. Dalitz. It is based on 2.0
fb1 of data collected by the Collider Detector Facility at Fermi National
Accelerator Laboratories. Di-lepton events were observed from colliding protons with
anti-protons with p s = 1:96 TeV in the Tevatron Collider. A total of 145 ... read morecandidate events
were observed with 49 expected to be from background. These events include two neutrinos
which elude detection. The method begins by assuming an initial top quark mass and solves
for the neutrino momenta using a geometrical construction. The method samples over a range
of likely top quark masses choosing the most consistent mass via a likelihood function. An
important distinguishing feature of this method from others is its lack of dependence on
the missing transverse energy, a quantity that is poorly measured by the experiment. This
analysis determines the top quark mass to be Mtop = 172:3 3:4(stat:) 2:0(syst:) GeV/c2
(Mtop = 170:5 3:7(stat:) 1:8(syst:) GeV/c2 with b-tagging).
Thesis (Ph.D.)--Tufts University, 2011.
Submitted to the Dept. of Physics.
Advisor: Krzysztof Sliwa.
Committee: Krzysztof Sliwa, Jacob Schneps, Anthony Mann, Peggy Cebe, and Stephane Willocq.
Keywords: Particle Physics, and Physics.read less - ID:
- rr1729112
- Component ID:
- tufts:20851
- To Cite:
- TARC Citation Guide EndNote
