Measurement of the Ratio σtt/σZ/γ∗→ll and Precise Extraction of the tt Cross Section

CDF Collaboration

doi:10.1103/PhysRevLett.105.012001

Scientific article

English

Measurement of the Ratio σ_tt/σ_Z/_γ∗→ll and Precise Extraction of the tt Cross Section

Contributors

CDF Collaboration

Collaborators

Clark, Allan Geoffrey; Garcia Navarro, Jose Enrique; Lister, Alison; Wu, Xin

Published in

Physical review letters, vol. 105, 7p.

Publication date

2010

Abstract

We report a measurement of the ratio of the tt to Z/γ∗ production cross sections in √s=1.96 TeV pp¯ collisions using data corresponding to an integrated luminosity of up to 4.6 fb−1, collected by the CDF II detector. The tt cross section ratio is measured using two complementary methods, a b-jet tagging measurement and a topological approach. By multiplying the ratios by the well-known theoretical Z/γ∗→ll cross section predicted by the standard model, the extracted tt cross sections are effectively insensitive to the uncertainty on luminosity. A best linear unbiased estimate is used to combine both measurements with the result σtt¯=7.70±0.52 pb, for a top-quark mass of 172.5 GeV/c2.

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire

Citation (ISO format)

CDF Collaboration. Measurement of the Ratio σ_tt/σ_Z/_γ∗→ll and Precise Extraction of the tt Cross Section. In: Physical review letters, 2010, vol. 105, p. 7p. doi: 10.1103/PhysRevLett.105.012001

Article (Published version)

Identifiers

PID : unige:38692
DOI : 10.1103/PhysRevLett.105.012001

Journal ISSN

0031-9007

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124downloads

Creation

15/07/2014 11:36:00

First validation

15/07/2014 11:36:00

Update

13/10/2025 22:32:35

Status update

14/03/2023 21:26:53

Last indexation

10/11/2026 17:01:43