Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at √s = 8 TeV
This paper reports a detailed study of techniques for identifying boosted, hadronically decaying W bosons using 20.3 fb−1 of proton-proton collision data collected by the ATLAS detector at the LHC at a centre-of-mass energy √s=8TeV. A range of techniques for optimising the signal jet mass resolution...
| Published in: | The European physical journal C Vol. 76, № 3. P. 154 (1-47) |
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| Other Authors: | , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000581601 Перейти в каталог НБ ТГУ |
| Summary: | This paper reports a detailed study of techniques for identifying boosted, hadronically decaying W bosons using 20.3 fb−1 of proton-proton collision data collected by the ATLAS detector at the LHC at a centre-of-mass energy √s=8TeV. A range of techniques for optimising the signal jet mass resolution are combined with various jet substructure variables. The results of these studies in Monte Carlo simulations show that a simple pairwise combination of groomed jet mass and one substructure variable can provide a 50 % efficiency for identifying W bosons with transverse momenta larger than 200 GeV while maintaining multijet background efficiencies of 2-4 % for jets with the same transverse momentum. These signal and background efficiencies are confirmed in data for a selection of tagging techniques. |
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| Bibliography: | Библиогр.: 82 назв. |
| ISSN: | 1434-6044 |