UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Measurement of the Top-Quark Mass with Dilepton Events Selected Using Neuroevolution at CDF

Aaltonen, T; Adelman, J; Akimoto, T; Albrow, MG; Gonzalez, BA; Amerio, S; Amidei, D; ... CDF Collaboration, ; + view all (2009) Measurement of the Top-Quark Mass with Dilepton Events Selected Using Neuroevolution at CDF. Physical Review Letters , 102 (15) , Article 152001. 10.1103/PhysRevLett.102.152001. Green open access

[img]
Preview
Text
131645.pdf

Download (249kB)

Abstract

We report a measurement of the top-quark mass M-t in the dilepton decay channel tt -> bl('+)nu(')(l)b1 nu(l). Events are selected with a neural network which has been directly optimized for statistical precision in top-quark mass using neuroevolution, a technique modeled on biological evolution. The top-quark mass is extracted from per-event probability densities that are formed by the convolution of leading order matrix elements and detector resolution functions. The joint probability is the product of the probability densities from 344 candidate events in 2.0 fb(-1) of pp collisions collected with the CDF II detector, yielding a measurement of M-t=171.2 +/- 2.7(stat)+/- 2.9(syst) GeV/c(2).

Type: Article
Title: Measurement of the Top-Quark Mass with Dilepton Events Selected Using Neuroevolution at CDF
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.102.152001
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.102.152001
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: NEURAL-NETWORKS, FERMILAB, COLLISIONS, TEVATRON, TEV
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/131645
Downloads since deposit
74Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item