期刊
EUROPEAN PHYSICAL JOURNAL C
卷 82, 期 8, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-022-10588-3
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资金
- ANPCyT, Argentina
- YerPhI, Armenia
- ARC, Australia
- FWF, Austria
- ANAS, Azerbaijan
- SSTC, Belarus
- CNPq, Brazil
- FAPESP, Brazil
- NSERC, Canada
- NRC, Canada
- CFI, Canada
- CERN
- ANID, Chile
- CAS, China
- MOST, China
- NSFC, China
- Minciencias, Colombia
- MEYS CR, Czech Republic
- DNRF, Denmark
- DNSRC, Denmark
- IN2P3CNRS, France
- CEA-DRF/IRFU, France
- SRNSFG, Georgia
- BMBF, Germany
- HGF, Germany
- MPG, Germany
- GSRI, Greece
- RGC, China
- Hong Kong SAR, China
- ISF, Israel
- Benoziyo Center, Israel
- INFN, Italy
- MEXT, Japan
- JSPS, Japan
- CNRST, Morocco
- NWO, Netherlands
- RCN, Norway
- MEiN, Poland
- FCT, Portugal
- MNE/IFA, Romania
- JINR
- MES of Russia
- NRC KI, Russian Federation
- MESTD, Serbia
- MSSR, Slovakia
- ARRS, Slovenia
- MIZS, Slovenia
- DSI/NRF, South Africa
- MICINN, Spain
- SRC, Sweden
- Wallenberg Foundation, Sweden
- SERI, Switzerland
- SNSF, Switzerland
- Canton of Bern,Switzerland
- Canton of Geneva, Switzerland
- MOST, Taiwan
- TAEK, Turkey
- STFC, United Kingdom
- DOE, USA
- NSF, USA
- BCKDF, Canada
- CANARIE, Canada
- Compute Canada, Canada
- CRC, Canada
- COST
- ERC
- ERDF
- Horizon 2020 and Marie Sklodowska Curie Actions, European Union
- Investissements d'Avenir Labex,France
- Investissements d'Avenir Idex, France
- ANR, France
- DFG, Germany
- AvH Foundation, Germany
- EU ESF
- Greek NSRF, Greece
- BSF-NSF, Israel
- GIF,Israel
- Norwegian Financial Mechanism 2014-2021,Norway
- NCN, Poland
- NAWA, Poland
- La Caixa Banking Foundation, Spain
- CERCA Programme Generalitat de Catalunya, Spain
- PROMETEO Programme Generalitat Valenciana, Spain
- GenT Programme Generalitat Valenciana, Spain
- Goran Gustafssons Stiftelse, Sweden
- Leverhulme Trust, UK
- BMWFW, Austria
- Royal Society
- Herakleitos programme
- Thales programme
- Aristeia programme
This research presents a study on the search for the Higgs boson decaying into a pair of charm quarks. The analysis utilizes proton-proton collisions and validates the method by measuring the production of WW, WZ, and ZZ. The study finds that the Higgs-charm coupling is weaker than the Higgs-bottom coupling.
A search for the Higgs boson decaying into a pair of charm quarks is presented. The analysis uses proton- proton collisions to target the production of a Higgs boson in association with a leptonically decaying W or Z boson. The dataset delivered by the LHC at a centre-of-mass energy of root s = 13 TeV and recorded by the ATLAS detector corresponds to an integrated luminosity of 139 fb(-1). Flavour-tagging algorithms are used to identify jets originating from the hadronisation of charm quarks. The analysis method is validated with the simultaneous measurement of WW, WZ and ZZ production, with observed (expected) significances of 2.6 (2.2) standard deviations above the background-only prediction for the (W/Z)Z(-> c (c) over bar) process and 3.8 (4.6) standard deviations for the (W/Z)W(-> cq) process. The (WIZ)H(-> c (c) over bar) search yields an observed (expected) upper limit of 26 (31) times the predicted Standard Model crosssection times branching fraction for a Higgs boson with a mass of 125 GeV, corresponding to an observed (expected) constraint on the charm Yukawa coupling modifier vertical bar k(c)vertical bar < 8.5 (12.4), at the 95% confidence level. A combination with the ATLAS (W/Z)H, H -> b<(b)over bar> analysis is performed, allowing the ratio k(c)/k(b) to be constrained to less than 4.5 at the 95% confidence level, smaller than the ratio of the b- and c-quark masses, and therefore determines the Higgs-charm coupling to be weaker than the Higgs-bottom coupling at the 95% confidence level.
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