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

Journal Article · Mon Feb 01 00:00:00 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, Vol. 81, Issue 3; Other Information: DOI: 10.1103/PhysRevD.81.031102; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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