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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 543242.0, MPI für Physik / MPI für Physik
Prospects for the measurement of the top-quark mass with early ATLAS data
Authors:on behalf of the ATLAS Collaboration; Cortiana, G.
Date of Publication (YYYY-MM-DD):2010
Title of Journal:Nuovo Cimento C
Journal Abbrev.:NuovoCim.C
Issue / Number:33
Start Page:315
End Page:317
Place of Conference/Meeting:Brugge, Belgium
(Start) Date of Conference/Meeting
 (YYYY-MM-DD):
2010-05-30
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:The prospects are presented for a top-quark mass, mtop, measurement in the ttbar -> letpon+jets channel via the template method using early ATLAS data. Two variants of the template analysis are presented. A 1-dimensional template analysis which adopts the stabilized top-quark mass variable, mtopstab, exploiting the event-by-event ratio of the reconstructed top-quark and W boson masses associated to the hadronically decaying top quark candidate, to minimize the impact of the jet energy scale, JES, uncertainty on mtop. A 2-dimensional analysis which simultaneously extracts mtop and the JES from the data. The latter, making uses of b-tagging, as well as of a kinematic fit of the decay products, offers a more precise determination of mtop, while requiring a better understanding of the detector. The 1-d analysis is optimized for very first data with integrated luminosities, Lint, up to 100 inverse pb; whereas the 2-d analysis is targeted at Lint of 1 inverse fb, the total integrated luminosity currently expected from the ongoing 2010-2011 LHC operations.
Classification / Thesaurus:ATLAS
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2010-74
URL:http://cdsweb.cern.ch/record/1274273
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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