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Inclusive search for highly boosted Higgs bosons decaying to bottom quark-antiquark pairs in proton-proton collisions at $ \sqrt{s} $ = 13 TeV

CMS Collaboration; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Bergauer, T.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Frühwirth, R.; Jeitler, M.; Krammer, N.; Lechner, L.; Liko, D.; Madlener, T.; Mikulec, I.; Pitters, F. M.; Rad, N.; Schieck, J.; Schöfbeck, R.; Spanring, M.; ... mehr

Abstract:
A search for standard model Higgs bosons (H) produced with transverse momentum (p$_{T}$) greater than 450 GeV and decaying to bottom quark-antiquark pairs (bb̅) is performed using proton-proton collision data collected by the CMS experiment at the LHC at $\sqrt{s}$= 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 bb̅ 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 → bb̅ 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 μ$_{H}$ = 3.7 ± 1.2(stat)(+0.8)¦(-0.7) (syst)(+0.8)¦(-0.5) (theo) and 1.9 σ. Additionally, an unfolded differential cross section as a function of Higgs boson p$_{T}$ for the gluon fusion production mode is presented, assuming the other production modes occur at the expected rates.


Verlagsausgabe §
DOI: 10.5445/IR/1000127730
Veröffentlicht am 15.12.2020
Originalveröffentlichung
DOI: 10.1007/JHEP12(2020)085
Scopus
Zitationen: 7
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Experimentelle Teilchenphysik (ETP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2020
Sprache Englisch
Identifikator ISSN: 1029-8479
KITopen-ID: 1000127730
Erschienen in Journal of high energy physics
Verlag Springer
Band 2020
Heft 12
Seiten Article: 85
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Vorab online veröffentlicht am 11.12.2020
Schlagwörter Hadron-Hadron scattering (experiments), Higgs physics
Nachgewiesen in arXiv
Dimensions
Web of Science
Scopus
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