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First simultaneous measurement of the top quark mass in the lepton+jets and dilepton channels at CDF

Aaltonen, T.
•
Adelman, J.
•
Akimoto, T.
altro
SANTI, Lorenzo Gianni
2009
  • journal article

Periodico
PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Abstract
We present a measurement of the mass of the top quark using data corresponding to an integrated luminosity of 1.9 fb−1 of pp ̄ collisions collected at √s=1.96 TeV with the CDF II detector at Fermilab’s Tevatron. This is the first measurement of the top quark mass using top-antitop pair candidate events in the lepton+jets and dilepton decay channels simultaneously. We reconstruct two observables in each channel and use a nonparametric kernel density estimation technique to derive two-dimensional probability density functions from simulated signal and background samples. The observables are the top quark mass and the invariant mass of two jets from the W decay in the lepton+jets channel, and the top quark mass and the scalar sum of transverse energy of the event in the dilepton channel. We perform a simultaneous fit for the top quark mass and the jet energy scale, which is constrained in situ by the hadronic W boson mass. Using 332 lepton+jets candidate events and 144 dilepton candidate events, we measure the top quark mass to be Mtop=171.9±1.7(stat+JES)±1.1(other syst) GeV/c2=171.9±2.0 GeV/c
DOI
10.1103/PhysRevD.79.092005
WOS
WOS:000266501800009
Archivio
http://hdl.handle.net/11390/1085127
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-67449106394
http://oai.aps.org/oai?verb=GetRecord&Identifier=oai:aps.org:PhysRevD.79.092005&metadataPrefix=oai_apsmeta_2
Diritti
metadata only access
Soggetti
  • Nuclear and High Ener...

Scopus© citazioni
21
Data di acquisizione
Jun 14, 2022
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Web of Science© citazioni
0
Data di acquisizione
Mar 24, 2024
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