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
Issue Date: 2023
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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