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Заглавие документа: | Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at √s = 13 TeV |
Авторы: | Chekhovsky, V. Litomin, A. Makarenko, V. Suarez Gonzalez, J. CMS Collaboration |
Тема: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика |
Дата публикации: | 2020 |
Издатель: | Springer Science and Business Media Deutschland GmbH |
Библиографическое описание источника: | J High Energy Phys 2020;2020(12). |
Аннотация: | A search for standard model Higgs bosons (H) produced with transverse momentum (pT) greater than 450 GeV and decaying to bottom quark-antiquark pairs (b b ¯) is performed using proton-proton collision data collected by the CMS experiment at the LHC at s = 13 TeV. The data sample corresponds to an integrated luminosity of 137 fb−1. The search is inclusive in the Higgs boson production mode. Highly Lorentz-boosted Higgs bosons decaying to b b ¯ are reconstructed as single large-radius jets, and are identified using jet substructure and a dedicated b tagging technique based on a deep neural network. The method is validated with Z →b b ¯ decays. For a Higgs boson mass of 125 GeV, an excess of events above the background assuming no Higgs boson production is observed with a local significance of 2.5 standard deviations (σ), while the expectation is 0.7. The corresponding signal strength and local significance with respect to the standard model expectation are μH = 3.7 ± 1.2(stat)−0.7+0.8(syst)−0.5+0.8(theo) and 1.9 σ. Additionally, an unfolded differential cross section as a function of Higgs boson pT for the gluon fusion production mode is presented, assuming the other production modes occur at the expected rates. |
URI документа: | https://elib.bsu.by/handle/123456789/288251 |
DOI документа: | 10.1007/JHEP12(2020)085 |
Scopus идентификатор документа: | 85097568570 |
Финансовая поддержка: | Horizon 2020 Framework Programme (675440, 752730, 765710); Science and Technology Facilities Council (GRIDPP) |
Лицензия: | info:eu-repo/semantics/openAccess |
Располагается в коллекциях: | Статьи НИУ «Институт ядерных проблем» |
Полный текст документа:
Файл | Описание | Размер | Формат | |
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JHEP12(2020)082.pdf | 738,24 kB | Adobe PDF | Открыть |
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