Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/22207
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Top quark mass measurement in the lepton plus jets channel using a modified matrix element method

AuthorsCDF Collaboration; Cabrera, Susana CSIC ORCID; Cuenca Almenar, Cristóbal CSIC; Álvarez González, B.; Casal, Bruno CSIC; Cuevas, Javier CSIC ORCID; Gómez, G. CSIC ORCID ; Rodrigo, Teresa CSIC ORCID ; Ruiz Jimeno, Alberto ; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar, Rocío CSIC ORCID; Aaltonen, T.
Issue Date10-Apr-2009
PublisherAmerican Physical Society
CitationPhysical Review - Section D - Particles and Fields 79 (7): 072001 (2009)
AbstractWe report a measurement of the top quark mass, m(t), obtained from p(p)over bar collisions at root s=1.96 TeV at the Fermilab Tevatron using the CDF II detector. We analyze a sample corresponding to an integrated luminosity of 1.9 fb(-1). We select events with an electron or muon, large missing transverse energy, and exactly four high-energy jets in the central region of the detector, at least one of which is tagged as coming from a b quark. We calculate a signal likelihood using a matrix element integration method, where the matrix element is modified by using effective propagators to take into account assumptions on event kinematics. Our event likelihood is a function of m(t) and a parameter JES (jet energy scale) that determines in situ the calibration of the jet energies. We use a neural network discriminant to distinguish signal from background events. We also apply a cut on the peak value of each event likelihood curve to reduce the contribution of background and badly reconstructed events. Using the 318 events that pass all selection criteria, we find m(t)=172.7 +/- 1.8(stat+JES)+/- 1.2(syst) GeV/c(2).
Publisher version (URL)http://dx.doi.org/ 10.1103/PhysRevD.79.072001
URIhttp://hdl.handle.net/10261/22207
DOI10.1103/PhysRevD.79.072001
ISSN1550-7998
Appears in Collections:(IFIC) Artículos

Files in This Item:
File Description SizeFormat
lepton plus.pdf565,97 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work

SCOPUSTM   
Citations

15
checked on May 14, 2022

WEB OF SCIENCETM
Citations

15
checked on May 10, 2022

Page view(s)

354
checked on May 15, 2022

Download(s)

191
checked on May 15, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.