Logo del repository
  1. Home
 
Opzioni

Direct Top-Quark Width Measurement at CDF

Aaltonen T.
•
Álvarez González B.
•
Amerio S.
altro
Zucchelli S.
2010
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
We present a measurement of the top-quark width in the lepton + jets decay channel of t (t) over bar events produced in p (p) over bar collisions at Fermilab's Tevatron collider and collected by the CDF II detector. From a data sample corresponding to 4.3 fb(-1) of integrated luminosity, we identify 756 candidate events. The top-quark mass and the mass of the hadronically decaying W boson that comes from the top-quark decay are reconstructed for each event and compared with templates of different top-quark widths (Gamma(t)) and deviations from nominal jet energy scale (Delta(JES)) to perform a simultaneous fit for both parameters, where Delta(JES) is used for the in situ calibration of the jet energy scale. By applying a Feldman-Cousins approach, we establish an upper limit at 95% confidence level (CL) of Gamma(t) < 7.6 GeV and a two-sided 68% CL interval of 0.3 GeV < Gamma(t) < 4.4 GeV for a top-quark mass of 172.5 GeV/c(2), which are consistent with the standard model prediction.
DOI
10.1103/PhysRevLett.105.232003
WOS
WOS:000286736800007
Archivio
http://hdl.handle.net/11390/863081
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-78649895824
Diritti
metadata only access
Scopus© citazioni
31
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
23
Data di acquisizione
Mar 19, 2024
google-scholar
Get Involved!
  • Source Code
  • Documentation
  • Slack Channel
Make it your own

DSpace-CRIS can be extensively configured to meet your needs. Decide which information need to be collected and available with fine-grained security. Start updating the theme to match your nstitution's web identity.

Need professional help?

The original creators of DSpace-CRIS at 4Science can take your project to the next level, get in touch!

Realizzato con Software DSpace-CRIS - Estensione mantenuta e ottimizzata da 4Science

  • Impostazioni dei cookie
  • Informativa sulla privacy
  • Accordo con l'utente finale
  • Invia il tuo Feedback