Measurement of the top quark mass in the lepton+jets final state with the matrix element method
- Joint Institute for Nuclear Research, Dubna, Russia (Russian Federation)
- University of Oklahoma, Norman, Oklahoma 73019 (United States)
- Michigan State University, East Lansing, Michigan 48824 (United States)
We present a measurement of the top quark mass with the matrix element method in the lepton+jets final state. As the energy scale for calorimeter jets represents the dominant source of systematic uncertainty, the matrix element likelihood is extended by an additional parameter, which is defined as a global multiplicative factor applied to the standard energy scale. The top quark mass is obtained from a fit that yields the combined statistical and systematic jet energy scale uncertainty. Using a data set of 0.4 fb{sup -1} taken with the D0 experiment at Run II of the Fermilab Tevatron Collider, the mass of the top quark is measured using topological information to be: m{sub top}{sup l+jets}(topo)=169.2{sub -7.4}{sup +5.0}(stat+JES){sub -1.4}{sup +1.5}(syst) GeV, and when information about identified b jets is included: m{sub top}{sup l+jets}(b-tag)=170.3{sub -4.5}{sup +4.1}(stat+ JES){sub -1.8}{sup +1.2}(syst) GeV. The measurements yield a jet energy scale consistent with the reference scale.
- OSTI ID:
- 20873112
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 74, Issue 9; Other Information: DOI: 10.1103/PhysRevD.74.092005; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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