Cortiana, G. (2010) Prospects for the measurement of the top-quark mass with early ATLAS data. Il nuovo cimento C, 33 (4). pp. 315-317. ISSN 1826-9885
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Abstract
The prospects are presented for a top-quark mass, mtop, measurement in the t¯t → lepton+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, mstab top , 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 use 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 pb−1; whereas the 2-d analysis is targeted at Lint of 1 fb−1, the total integrated luminosity currently expected from the ongoing 2010-2011 LHC operations.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Quark and lepton masses and mixing ; Top quarks |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 01 Apr 2020 19:50 |
| Last Modified: | 01 Apr 2020 19:50 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/16970 |
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