We present a measurement of the mass difference between top (t) and antitop ((t) over bar) quarks using t (t) over bar candidate events reconstructed in the final state with one lepton and multiple jets. We use the full data set of Tevatron root s = 1.96 TeV proton-antiproton collisions recorded by the CDF II detector, corresponding to an integrated luminosity of 8.7 fb(-1). We estimate event by event the mass difference to construct templates for top pair signal events and background events. The resulting mass difference distribution in data compared to signal and background templates using a likelihood fit yields Delta M-top = M-t - M-(t) over bar = -1.95 +/- 1.11(stat) +/- 0.59(syst) GeV/c(2) and is in agreement with the standard model prediction of no mass difference. DOI.10.1103/PhysRevD.87.052013

Measurement of the mass difference between top and antitop quarks

INTROZZI, GIANLUCA;
2013-01-01

Abstract

We present a measurement of the mass difference between top (t) and antitop ((t) over bar) quarks using t (t) over bar candidate events reconstructed in the final state with one lepton and multiple jets. We use the full data set of Tevatron root s = 1.96 TeV proton-antiproton collisions recorded by the CDF II detector, corresponding to an integrated luminosity of 8.7 fb(-1). We estimate event by event the mass difference to construct templates for top pair signal events and background events. The resulting mass difference distribution in data compared to signal and background templates using a likelihood fit yields Delta M-top = M-t - M-(t) over bar = -1.95 +/- 1.11(stat) +/- 0.59(syst) GeV/c(2) and is in agreement with the standard model prediction of no mass difference. DOI.10.1103/PhysRevD.87.052013
2013
The Physics category includes resources of a broad, general nature that contain materials from all areas of physics, The category also includes resources specifically concerned with the following physics sub-fields: mathematical physics, particle and nuclear physics, physics of fluids and plasmas, quantum physics, and theoretical physics.
Esperti anonimi
Inglese
Internazionale
STAMPA
87
052013
CDF FERMILAB; top quark mass
410
info:eu-repo/semantics/article
262
T., Aaltonen; S., Amerio; D., Amidei; A., Anastassov; A., Annovi; J., Antos; G., Apollinari; J. A., Appel; T., Arisawa; A., Artikov; J., Asaadi; W., A...espandi
1 Contributo su Rivista::1.1 Articolo in rivista
none
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/851067
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 16
  • ???jsp.display-item.citation.isi??? 9
social impact