Measurement of the top quark mass and pp{yields}tt cross section in the all-hadronic mode with the CDF II detector

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

DOI:https://doi.org/10.1103/PHYSREVD.81.052011· OSTI ID:21409822

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 a measurement of the top quark mass and of the top-antitop (tt) pair production cross section using pp data collected with the CDF II detector at the Tevatron Collider at the Fermi National Accelerator Laboratory and corresponding to an integrated luminosity of 2.9 fb{sup -1}. We select events with six or more jets satisfying a number of kinematical requirements imposed by means of a neural-network algorithm. At least one of these jets must originate from a b quark, as identified by the reconstruction of a secondary vertex inside the jet. The mass measurement is based on a likelihood fit incorporating reconstructed mass distributions representative of signal and background, where the absolute jet energy scale (JES) is measured simultaneously with the top quark mass. The measurement yields a value of 174.8{+-}2.4(stat+JES){sub -1.0}{sup +1.2}(syst) GeV/c{sup 2}, where the uncertainty from the absolute jet energy scale is evaluated together with the statistical uncertainty. The procedure also measures the amount of signal from which we derive a cross section, {sigma}{sub tt}=7.2{+-}0.5(stat){+-}1.0(syst){+-}0.4(lum) pb, for the measured values of top quark mass and JES.

• OSTI ID: 21409822
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevD.81.052011; (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
ALGORITHMS
B QUARKS
CROSS SECTIONS
FERMILAB ACCELERATOR
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
GEV RANGE
HADRONS
LUMINOSITY
MASS
MASS DISTRIBUTION
PAIR PRODUCTION
PROTON-PROTON INTERACTIONS
T QUARKS
ACCELERATORS
BARYON-BARYON INTERACTIONS
BEAUTY PARTICLES
CYCLIC ACCELERATORS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
MATHEMATICAL LOGIC
MEASURING INSTRUMENTS
NUCLEON-NUCLEON INTERACTIONS
OPTICAL PROPERTIES
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHYSICAL PROPERTIES
POSTULATED PARTICLES
PROTON-NUCLEON INTERACTIONS
QUARKS
RADIATION DETECTORS
SPATIAL DISTRIBUTION
SYNCHROTRONS
TOP PARTICLES