Measurements of the Top-Quark Mass and the tt̅ Cross Section in the Hadronic τ+jets Decay Channel at √s=1.96 TeV
Name
Aaltonen-2012-Measurements of the top-quark mass.pdf
Size
266.82 KB
Format
Adobe PDF
Checksum (MD5)
9e651bb4992e98357fb2dfbebd75849e
Author(s)
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Paus, Christoph M. E.
Date Issued
November 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aaltonen, T. et al. “Measurements of the Top-Quark Mass and the Tt[over ¯] Cross Section in the Hadronic Τ+jets Decay Channel at Sqrt[s]=1.96 TeV.” Physical Review Letters 109.19 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
We present the first direct measurement of the top-quark mass using tt̅ events decaying in the hadronic τ+jets decay channel. Using data corresponding to an integrated luminosity of 2.2 fb[superscript -1] collected by the CDF II detector in pp̅ collisions at √s=1.96 TeV at the Fermilab Tevatron, we measure the tt̅ cross section, σ[subscript tt̅] , and the top-quark mass, M[subscript top]. We extract M[subscript top] from a likelihood based on per-event probabilities calculated with leading-order signal and background matrix elements. We measure σ[subscript tt̅] =8.8±3.3(stat)±2.2(syst) pb and M[subscript top]=172.7±9.3(stat)±3.7(syst) GeV/c[superscript 2].
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.109.192001
