Search for the decay of the Higgs boson to a pair of light pseudoscalar bosons in the final state with four bottom quarks in proton-proton collisions at $$ \sqrt{\textrm{s}} $$ = 13 TeV
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A search is presented for the decay of the 125 GeV Higgs boson (H) to a pair of new light pseudoscalar bosons (a), followed by the prompt decay of each a boson to a bottom quark-antiquark pair, $$ \textrm{H}\to \textrm{aa}\to \textrm{b}\overline{\textrm{b}}\textrm{b}\overline{\textrm{b}} $$. The analysis is performed using a data sample of proton-proton collisions collected with the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb$$^{−1}$$. To reduce the background from standard model processes, the search requires the Higgs boson to be produced in association with a leptonically decaying W or Z boson. The analysis probes the production of new light bosons in a 15 < m$$_{a}$$ < 60 GeV mass range. Assuming the standard model predictions for the Higgs boson production cross sections for pp → WH and ZH, model independent upper limits at 95% confidence level are derived for the branching fraction $$ \mathcal{B}\left(\textrm{H}\to \textrm{aa}\to \textrm{b}\overline{\textrm{b}}\textrm{b}\overline{\textrm{b}}\right) $$. The combined WH and ZH observed upper limit on the branching fraction ranges from 1.10 for m$$_{a}$$ = 20 GeV to 0.36 for m$$_{a}$$ = 60 GeV, complementing other measurements in the μμττ, ττττ and bbℓℓ (ℓ = μ, τ) channels.[graphic not available: see fulltext]
- Research Organization:
- Taiwan, Natl. Central U.; Rutgers U., Piscataway; Malaya U.; Strasbourg, IPHC; Texas A&M U. Qatar, Doha; IPM, Tehran; DESY; Bhubaneswar, Inst. Phys.; Stefan Meyer Inst. Subatomare Phys.; Cantabria Inst. of Phys.; Sonora U.; CHEP, Taegu; U. Urbino (main); Ioannina U.; INFN, Bari; Caltech; Madrid, Autonoma U.; Lappeenranta U. Tech.; Chulalongkorn U.; Korea U.; Rutherford; Gent U.; Cairo, Acad. Sci. Res. Tech.; Inst. Scintill. Mat., Kharkiv; Ohio State U.; Hacettepe U.; NICPB, Tallinn; U. Debrecen, Inst. Phys.; Rio de Janeiro, CBPF; Ruhuna U.; KIT, Karlsruhe, IKP; Cyprus U.; INFN, Pisa; CINVESTAV, IPN; Zurich U.; Helsinki Inst. of Phys.; Indian Inst. Tech., Madras; Rome U.; INFN, Turin; ABC Federal U.; Visva Bharati U.; Bari U.; Brown U.; INFN, Genoa; Seoul Natl. U.; Maryland U.; Yonsei U.; Purdue U.; Cornell U.; Illinois U., Chicago; Mississippi U.; SYSU, Guangzhou; VINCA Inst. Nucl. Sci., Belgrade; Belgrade U.; Cukurova U.; Split U.; Tarapaca U.; Helwan U.; Delhi U.; Rockefeller U.; ENEA, Bologna; Frascati; Warsaw U.; Annecy, LAPP; NCBJ, Swierk; Sofiya, Inst. Nucl. Res.; INFN, Milan Bicocca; IRFU, Saclay; Brunel U.; INFN, Naples; Tsinghua U., Beijing; Pisa, Scuola Normale Superiore; Wisconsin U., Madison; Catholic U. America; Carnegie Mellon U.; Ecole Polytechnique; Florida Inst. Tech.; INFN, Florence; AGH-UST, Cracow; INFN, Pavia; Pisa U.; Florida State U.; Erzincan U.; Sinop U.; Riga Tech. U.; Bhubaneswar, NISER; Vilnius U.; Panjab U.; Rio Grande do Sul U.; IAS, Julich; UCAS, Beijing; Fudan U.; Oviedo U.; UC, Santa Barbara; Nebraska U.; Iowa U.; Alabama U.; USTM, Behshahr; Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Virginia U.; Beihang U.; Vanderbilt U.; Colorado U.; Indian Inst. Tech., Bhubaneswar; EKU KRC, Gyongyos; Purdue U., Calumet; Northwestern U.; U. Campinas; Louvain U.; Vienna, OAW; Hanyang U.; Montenegro U.; Texas A-M; Rio de Janeiro State U.; Perugia U.; Beijing, Inst. High Energy Phys.; Budapest, RMKI; Saha Inst.; Bangalore, Indian Inst. Sci.; Conacyt, Mexico; Zhejiang U.; Helsinki U.; Puebla U., Inst. Fis.; Naval Academy, Annapolis; Bingöl U.; Madrid, CIEMAT; Rice U.; Notre Dame U.; Boston U.; Tata Inst.; INFN, Bologna; Southampton U.; Cairo U.; INFN, Trieste; Texas Tech.; Tashkent, IYF; Brussels U.; Antwerp U.; Kansas U.; Taiwan, Natl. Taiwan U.; Istanbul Tech. U.; GTU, Tbilisi; Naples U.; Split Tech. U.; INFN, Catania; Bristol U.; UC, San Diego; Iberoamericana U.; Imperial Coll., London; Adiyaman U.; Minnesota U.; Puerto Rico U., Mayaguez; Vrije U., Brussels; Hamburg U.; Princeton U.; Andes U., Bogota; AUM, Kuwait; Wayne State U.; Sharif U. of Tech.; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Middle East Tech. U., Ankara; Nanjing Normal U.; Athens U.; INFN, Padua; Kansas State U.; Sungkyunkwan U.; PSI, Villigen; Istanbul U.; Antioquia U.; LIP, Lisbon; Sejong U.; Rochester U.; Unlisted; Canterbury U.; Ain Shams U., Cairo; Bethel Coll.; IP2I, Lyon; Kafkas U.; UCLA; Brandenburg Tech. U.; SUNY, Buffalo; British U. in Egypt; Quaid-i-Azam U.; IISER, Pune; TU Vienna; Messina U.; Bogazici U.; Louvain U., CP3; KIT, Karlsruhe, EKP; Aachen, Tech. Hochsch.; Peking U.; Charles U.; Baylor U.; Bucharest, IFIN-HH; Hefei, CUST; UC, Davis; Karamanoglu Mehmetbey U., Karaman; Democritos Nucl. Res. Ctr.; Marmara U.; Yildiz Tech. U.; Sofiya U.; Haute Alsace U.; Gangneung-Wonju Natl. U.; Monash U.; University Coll., Dublin; Ilia State U.; Warsaw U. of Tech.; UC, Riverside; Tennessee U.; Johns Hopkins U.; Fayoum U.; Isfahan Tech. U.; Zurich, ETH; Eotvos U.; CERN; Kharkov, KIPT; Kyung Hee U.; Seoul U.; INFN, Rome; INFN, Perugia; MIT; Quito, Escuela Politecnica Natl.; Florida U.; Natl. Tech. U., Athens; TIFR, Mumbai, DHEP; Guglielmo Marconi U.; Boskovic Inst., Zagreb; San Francisco de Quito U.; Chonnam Natl. U.; Colombo U.; Northeastern U.; Yerevan Phys. Inst.; Debrecen, Inst. Nucl. Res.; Turin U.
- Sponsoring Organization:
- US Department of Energy
- Grant/Contract Number:
- AC02-07CH11359; 89243024CSC000002
- OSTI ID:
- 2396937
- Report Number(s):
- CMS-HIG-18-026; CERN-EP-2024-028; FERMILAB-PUB-24-0345-CMS; oai:inspirehep.net:2769284; arXiv:2403.10341
- Journal Information:
- JHEP, Journal Name: JHEP Vol. 06
- Country of Publication:
- United States
- Language:
- English
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Wed Aug 26 20:00:00 EDT 2020
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OSTI ID:1630718