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Заглавие документа: | Measurement of jet activity in top quark events using the eμ final state with two b-tagged jets in pp collisions at √s=8 TeV with the ATLAS detector |
Авторы: | Hrynevich, A. ATLAS collaboration |
Тема: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика |
Дата публикации: | 2016 |
Издатель: | Springer Verlag |
Библиографическое описание источника: | J High Energy Phys 2016;2016(9). |
Аннотация: | Measurements of the jet activity in tt¯ events produced in proton-proton collisions at s=8 TeV are presented, using 20.3 fb−1 of data collected by the ATLAS experiment at the Large Hadron Collider. The events were selected in the dilepton eμ decay channel with two identified b-jets. The numbers of additional jets for various jet transverse momentum (pT) thresholds, and the normalised differential cross-sections as a function of pT for the five highest-pT additional jets, were measured in the jet pseudo-rapidity range |η| < 4.5. The gap fraction, the fraction of events which do not contain an additional jet in a central rapidity region, was measured for several rapidity intervals as a function of the minimum pT of a single jet or the scalar sum of pT of all additional jets. These fractions were also measured in different intervals of the invariant mass of the eμbb¯ system. All measurements were corrected for detector effects, and found to be mostly well-described by predictions from next-to-leading-order and leading-order tt¯ event generators with appropriate parameter choices. The results can be used to further optimise the parameters used in such generators.[Figure not available: see fulltext.] |
URI документа: | https://elib.bsu.by/handle/123456789/265557 |
DOI документа: | 10.1007/JHEP09(2016)074 |
Scopus идентификатор документа: | 84988485941 |
Располагается в коллекциях: | Статьи НИУ «Институт ядерных проблем» |
Полный текст документа:
Файл | Описание | Размер | Формат | |
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Aaboud2016_Article_MeasurementOfJetActivityInTopQ.pdf | 3,02 MB | Adobe PDF | Открыть |
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