Precision measurement of the top-quark mass from dilepton events at CDF II

Journal Article · Thu Feb 01 04:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.031105· OSTI ID:21010962

Abulencia, A; Budd, S; Ciobanu, C I; Errede, D; Errede, S; Gerberich, H; Grundler, U; Junk, T R; Kraus, J; Liss, T M; Marino, C P; Pitts, K; Rogers, E; Taffard, A; Veramendi, G; Zhang, X ^[1]; Adelman, J; Brubaker, E; Fedorko, W T; Furic, I ^[2]

---

1. University of Illinois, Urbana, Illinois 61801 (United States)
2. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)

We report a measurement of the top-quark mass, M{sub t}, in the dilepton decay channel of tt{yields}bl{sup '+}{nu}{sub l{sup '}}bl{sup -}{nu}{sub l} using an integrated luminosity of 1.0 fb{sup -1} of pp collisions collected with the CDF II detector. We apply a method that convolutes a leading-order matrix element with detector resolution functions to form event-by-event likelihoods; we have enhanced the leading-order description to describe the effects of initial-state radiation. The joint likelihood is the product of the likelihoods from 78 candidate events in this sample, which yields a measurement of M{sub t}=164.5{+-}3.9(stat.){+-}3.9(syst.) GeV/c{sup 2}, the most precise measurement of M{sub t} in the dilepton channel.

• OSTI ID: 21010962
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 75; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCURACY
FERMILAB COLLIDER DETECTOR
GEV RANGE
MATRIX ELEMENTS
NEUTRINOS
PARTICLE DECAY
PARTICLE IDENTIFICATION
PROTON-PROTON INTERACTIONS
RESOLUTION
REST MASS
T QUARKS