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Direct measurement of the total decay width of the top quark.

Publication ,  Journal Article
Aaltonen, T; Amerio, S; Amidei, D; Anastassov, A; Annovi, A; Antos, J; Apollinari, G; Appel, JA; Arisawa, T; Artikov, A; Asaadi, J; Azfar, F ...
Published in: Physical review letters
November 2013

We present a measurement of the total decay width of the top quark using events with top-antitop quark pair candidates reconstructed in the final state with one charged lepton and four or more hadronic jets. We use the full Tevatron run II data set of sqrt[s]=1.96  TeV proton-antiproton collisions recorded by the CDF II detector. The top quark mass and the mass of the hadronically decaying W boson are reconstructed for each event and compared with distributions derived from simulated signal and background samples to extract the top quark width (Γtop) and the energy scale of the calorimeter jets with in situ calibration. For a top quark mass Mtop=172.5  GeV/c2, we find 1.10<Γtop<4.05  GeV at 68% confidence level, which is in agreement with the standard model expectation of 1.3 GeV and is the most precise direct measurement of the top quark width to date.

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Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

November 2013

Volume

111

Issue

20

Start / End Page

202001

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

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Aaltonen, T., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., … CDF Collaboration. (2013). Direct measurement of the total decay width of the top quark. Physical Review Letters, 111(20), 202001. https://doi.org/10.1103/physrevlett.111.202001
Aaltonen, T., S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, et al. “Direct measurement of the total decay width of the top quark.Physical Review Letters 111, no. 20 (November 2013): 202001. https://doi.org/10.1103/physrevlett.111.202001.
Aaltonen T, Amerio S, Amidei D, Anastassov A, Annovi A, Antos J, et al. Direct measurement of the total decay width of the top quark. Physical review letters. 2013 Nov;111(20):202001.
Aaltonen, T., et al. “Direct measurement of the total decay width of the top quark.Physical Review Letters, vol. 111, no. 20, Nov. 2013, p. 202001. Epmc, doi:10.1103/physrevlett.111.202001.
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Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

November 2013

Volume

111

Issue

20

Start / End Page

202001

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences