Search for a light pseudoscalar Higgs boson in the boosted $$\mu\mu\tau\tau$$ final state in proton-proton collisions at $$\sqrt{s}=$$ 13 TeV
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A search for a light pseudoscalar Higgs boson (a) decaying from the 125 GeV (or a heavier) scalar Higgs boson (H) is performed using the 2016 LHC proton-proton collision data at $$ \sqrt{s} $$ = 13 TeV, corresponding to an integrated luminosity of 35.9 fb$$^{−1}$$, collected by the CMS experiment. The analysis considers gluon fusion and vector boson fusion production of the H, followed by the decay H → aa → μμττ, and considers pseudoscalar masses in the range 3.6 < m$$_{a}$$< 21 GeV. Because of the large mass difference between the H and the a bosons and the small masses of the a boson decay products, both the μμ and the ττ pairs have high Lorentz boost and are collimated. The ττ reconstruction efficiency is increased by modifying the standard technique for hadronic τ lepton decay reconstruction to account for a nearby muon. No significant signal is observed. Model-independent limits are set at 95% confidence level, as a function of m$$_{a}$$, on the branching fraction (ℬ) for H → aa → μμττ, down to 1.5 (2.0) × 10$$^{−4}$$ for m$$_{H}$$ = 125 (300) GeV. Model-dependent limits on ℬ(H → aa) are set within the context of two Higgs doublets plus singlet models, with the most stringent results obtained for Type-III models. These results extend current LHC searches for heavier a bosons that decay to resolved lepton pairs and provide the first such bounds for an H boson with a mass above 125 GeV.[graphic not available: see fulltext]
- Research Organization:
- Warsaw U.; INFN, Pavia; Catania U.; Peking U.; Purdue U., Calumet; Ruhuna U.; Annecy, LAPP; Natl. Tech. U., Athens; Cornell U.; Virginia U.; Bethel Coll.; Carnegie Mellon U.; Bangalore, Indian Inst. Sci.; Boston U.; UC, San Diego; INFN, Pisa; Taiwan, Natl. Central U.; Pisa U.; Piri Reis U., Istanbul; Bari U.; LIP, Lisbon; Strasbourg, IPHC; Antwerp U.; Delhi U.; Novosibirsk, IYF; Madrid, CIEMAT; Warsaw U. of Tech.; SYSU, Guangzhou; Quito, Escuela Politecnica Natl.; Aachen, Tech. Hochsch.; DESY; Johns Hopkins U.; Quaid-i-Azam U.; Split U.; INFN, Trieste; Madrid, Autonoma U.; Vienna, OAW; Split Tech. U.; Athens U.; INFN, Milan Bicocca; Ozyegin U.; Beijing, Inst. High Energy Phys.; Bologna U.; Tashkent, IYF; Cukurova U.; Sinop U.; Zurich, ETH; Minnesota U.; Zurich U.; Padua U.; Puebla U., Inst. Fis.; Beykent U.; Taiwan, Natl. Taiwan U.; Rice U.; Panjab U.; Boskovic Inst., Zagreb; Middle East Tech. U., Ankara; Sungkyunkwan U.; Gent U.; Beijing, GUCAS; Iowa U.; Cairo, Acad. Sci. Res. Tech.; Bhabha Atomic Res. Ctr.; Rochester U.; Auckland U.; Yonsei U.; UC, Santa Barbara; Brandenburg Tech. U.; CINVESTAV, IPN; Ohio State U.; NCBJ, Swierk; Chonnam Natl. U.; Northwestern U.; Seoul U.; Kansas State U.; Hamburg U.; Sao Paulo, IFT; Naples U.; Oviedo U.; Florida Intl. U.; Baylor U.; Bhubaneswar, NISER; University Coll., Dublin; AGH-UST, Cracow; BeiHang U.; Siena U.; Brown U.; ABC Federal U.; Inst. Scintill. Mat., Kharkiv; Pelotas U.; Puerto Rico U., Mayaguez; Bari Polytechnic; INFN, Padua; St. Petersburg Polytechnic Inst.; Karamanoglu Mehmetbey U., Karaman; Hacettepe U.; Istanbul Bilgi U.; Cantabria Inst. of Phys.; San Luis Potosi U.; Antioquia U.; Pavia U.; Guglielmo Marconi U.; Hanyang U.; Florida Inst. Tech.; Brunel U.; Bristol U.; Rio de Janeiro State U.; Budapest, RMKI; Ecole Polytechnique; Lebedev Inst.; Novosibirsk State U.; CHEP, Taegu; Istanbul Aydin U.; Northeastern U.; INFN, Rome; INFN, Naples; Basilicata U., Potenza; Trieste U.; INFN, Catania; Imperial Coll., London; Istanbul U.; Illinois U., Chicago; VINCA Inst. Nucl. Sci., Belgrade; Adiyaman U.; MIT; IPM, Tehran; PSI, Villigen; SUNY, Buffalo; San Francisco de Quito U.; Moscow, MIPT; British U. in Egypt; Korea U.; Marmara U.; Frascati; Alabama U.; St. Petersburg, INP; Necmettin Erbakan U., Konya; Rutherford; EKU KRC, Gyongyos; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Chulalongkorn U.; Indian Inst. Tech., Bhubaneswar; Moscow State U.; Tsinghua U., Beijing; Debrecen, Inst. Nucl. Res.; Sejong U.; INFN, Perugia; Southampton U.; Louvain U.; Conacyt, Mexico; Monash U.; Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Charles U.; Kansas U.; Minsk, Inst. Nucl. Problems; Rome U.; Maryland U.; Florida U.; Sofiya, Inst. Nucl. Res.; KIT, Karlsruhe, EKP; UCLA; Riga Tech. U.; Malaya U.; Rio de Janeiro, CBPF; Sofiya U.; TU Vienna; GTU, Tbilisi; Colombo U.; Lyon, IPN; Mississippi U.; Purdue U.; Caltech; Istanbul, Tech. U.; Cyprus U.; Princeton U.; Indian Inst. Tech., Madras; INFN, Florence; Lappeenranta U. Tech.; Ain Shams U., Cairo; Democritos Nucl. Res. Ctr.; Texas A&M U. Qatar, Doha; U. Campinas; UC, Davis; Helsinki U.; Bingöl U.; TIFR, Mumbai, DHEP; Canterbury U.; Rutgers U., Piscataway; NICPB, Tallinn; Izmir Inst. Tech.; Kharkov, KIPT; Vanderbilt U.; Mimar Sinan U.; Texas A-M; Mersin U.; Kafkas U.; Ioannina U.; INFN, Bologna; Texas Tech.; Rio Grande do Sul U.; Erzincan U.; Milan Bicocca U.; IISER, Pune; Piemonte Orientale U., Novara; Bhubaneswar, Inst. Phys.; Visva Bharati U.; Pisa, Scuola Normale Superiore; Vrije U., Brussels; INFN, Genoa; Dubna, JINR; Vilnius U.; Montenegro U.; Serpukhov, IHEP; Florida State U.; IRFU, Saclay; Florence U.; Kyung Hee U.; Moscow, ITEP; Iberoamericana U.; Tomsk Polytechnic U.; Nebraska U.; Sonora U.; Stefan Meyer Inst. Subatomare Phys.; Haute Alsace U.; INFN, Turin; Turin U.; Helsinki Inst. of Phys.; Moscow Phys. Eng. Inst.; Tomsk State U.; Belgrade U.; Wisconsin U., Madison; Perugia U.; Andes U., Bogota; Zhejiang U.; U. Genoa; Isfahan Tech. U.; Eotvos U.; Seoul Natl. U.; Colorado U.; Tbilisi State U.; Tennessee U.; Brussels U.; Bogazici U.; Yerevan Phys. Inst.; Catholic U. America; CERN; Wayne State U.; INFN, Bari; Notre Dame U.; Moscow, INR; UC, Riverside; U. Debrecen, Inst. Phys.; Saha Inst.; Fayoum U.
- Sponsoring Organization:
- US Department of Energy
- Grant/Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1630718
- Alternate ID(s):
- OSTI ID: 1721766
OSTI ID: 1657329
- Report Number(s):
- CMS-HIG-18-024; FERMILAB-PUB-20-209-CMS; CERN-EP-2020-061; oai:inspirehep.net:1796729; arXiv:2005.08694
- Journal Information:
- JHEP, Journal Name: JHEP Vol. 08
- Country of Publication:
- United States
- Language:
- English
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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
Journal Article
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Thu Jun 13 20:00:00 EDT 2024
· JHEP
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OSTI ID:2396937