Measurement of the top quark mass in the dilepton channel using m{sub T2} at CDF

Journal Article · Mon Feb 01 04:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.031102· OSTI ID:21409136

Aaltonen, T; Mehtala, P; Orava, R; Osterberg, K; Saarikko, H; Remortel, N van ^[1]; Adelman, J; Brubaker, E; Fedorko, W T; Grosso-Pilcher, C; Hurwitz, M; Ketchum, W; Kim, Y K; Krop, D; Kwang, S; Lee, H S; Schmidt, M A; Shiraishi, S; Shochet, M; Tang, J ^[2]

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1. Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki (Finland)
2. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)

We present measurements of the top quark mass using m{sub T2}, a variable related to the transverse mass in events with two missing particles. We use the template method applied to tt dilepton events produced in pp collisions at Fermilab's Tevatron Collider and collected by the CDF detector. From a data sample corresponding to an integrated luminosity of 3.4 fb{sup -1}, we select 236 tt candidate events. Using the m{sub T2} distribution, we measure the top quark mass to be M{sub top}=168.0{sub -4.0}{sup +4.8}(stat){+-}2.9(syst) GeV/c{sup 2}. By combining m{sub T2} with the reconstructed top quark mass distributions based on a neutrino weighting method, we measure M{sub top}=169.3{+-}2.7(stat){+-}3.2(syst) GeV/c{sup 2}. This is the first application of the m{sub T2} variable in a mass measurement at a hadron collider.

• OSTI ID: 21409136
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BARYON-BARYON INTERACTIONS
CYCLIC ACCELERATORS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
FERMIONS
GEV RANGE
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
LEPTONS
LUMINOSITY
MASS
MASS DISTRIBUTION
MASSLESS PARTICLES
MEASURING INSTRUMENTS
NEUTRINOS
NUCLEON-NUCLEON INTERACTIONS
OPTICAL PROPERTIES
PARTICLE INTERACTIONS
PARTICLES
PHYSICAL PROPERTIES
POSTULATED PARTICLES
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
QUARKS
RADIATION DETECTORS
SPATIAL DISTRIBUTION
SYNCHROTRONS
T QUARKS
TOP PARTICLES