Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.13091/4778
Title: | Search for Higgs Boson Decay to a Charm Quark-Antiquark Pair in Proton-Proton Collisions at Formula Presented | Authors: | Tumasyan, A. Adam, W. Andrejkovic, J.W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. |
Keywords: | Learning systems Tellurium compounds Charm quarks Charm+ Confidence levels Higgs Boson decay Proton proton collisions Quark antiquark pair Standard-model Higgs bosons The standard model W bosons Z Bosons Bosons article boson hadron machine learning prediction quark |
Publisher: | American Physical Society | Abstract: | A search for the standard model Higgs boson decaying to a charm quark-antiquark pair, H → c c ¯ , produced in association with a leptonically decaying V ( W or Z ) boson is presented. The search is performed with proton-proton collisions at s = 13 TeV collected by the CMS experiment, corresponding to an integrated luminosity of 138 fb - 1 . Novel charm jet identification and analysis methods using machine learning techniques are employed. The analysis is validated by searching for Z → c c ¯ in V Z events, leading to its first observation at a hadron collider with a significance of 5.7 standard deviations. The observed (expected) upper limit on σ ( V H ) B ( H → c c ¯ ) is 0.94 ( 0.50 - 0.15 + 0.22 )pb at 95% confidence level (C.L.), corresponding to 14 ( 7.6 - 2.3 + 3.4 ) times the standard model prediction. For the Higgs-charm Yukawa coupling modifier, κ c , the observed (expected) 95% C.L. interval is 1.1 < | κ c | < 5.5 ( | κ c | < 3.4 ), the most stringent constraint to date. © 2023 CERN, for the CMS Collaboration. | URI: | https://doi.org/10.1103/PhysRevLett.131.061801 https://hdl.handle.net/20.500.13091/4778 |
ISSN: | 0031-9007 |
Appears in Collections: | PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collections Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections |
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