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A search for decays of the Higgs boson to invisible particles in events with a top-antitop quark pair or a vector boson in proton-proton collisions at $$\sqrt{s} = 13\,\text {Te}\hspace{-.08em}\text {V} $$

A. TumasyanYerevan Physics Institute, Yerevan, ArmeniaW. AdamInstitut für Hochenergiephysik, Vienna, AustriaJ W AndrejkovicInstitut für Hochenergiephysik, Vienna, AustriaT. BergauerInstitut für Hochenergiephysik, Vienna, AustriaS. ChatterjeeIndian Institute of Technology Madras, Madras, IndiaK. DamanakisInstitut für Hochenergiephysik, Vienna, AustriaM. DragicevicInstitut für Hochenergiephysik, Vienna, AustriaA. Escalante Del ValleInstitut für Hochenergiephysik, Vienna, AustriaPriya Sajid HussainInstitut für Hochenergiephysik, Vienna, AustriaM. JeitlerInstitut für Hochenergiephysik, Vienna, AustriaNatascha KrammerInstitut für Hochenergiephysik, Vienna, AustriaL. LechnerInstitut für Hochenergiephysik, Vienna, AustriaD. LikoInstitut für Hochenergiephysik, Vienna, AustriaI. MikulecInstitut für Hochenergiephysik, Vienna, AustriaP. PaulitschInstitut für Hochenergiephysik, Vienna, AustriaJ. SchieckInstitut für Hochenergiephysik, Vienna, AustriaR. SchöfbeckInstitut für Hochenergiephysik, Vienna, AustriaD. SchwarzInstitut für Hochenergiephysik, Vienna, AustriaM. SonawaneInstitut für Hochenergiephysik, Vienna, AustriaS. TemplInstitut für Hochenergiephysik, Vienna, AustriaW. WaltenbergerInstitut für Hochenergiephysik, Vienna, AustriaC.-E. WulzInstitut für Hochenergiephysik, Vienna, AustriaM. R. DarwishInstitute of Basic and Applied Sciences, Faculty of Engineering, Arab Academy for Science, Technology and Maritime Transport, Alexandria, EgyptX. JanssenUniversiteit Antwerpen, Antwerpen, BelgiumT. KelloUniversiteit Antwerpen, Antwerpen, BelgiumHaifa Rejeb SfarUniversiteit Antwerpen, Antwerpen, BelgiumP. Van MechelenUniversiteit Antwerpen, Antwerpen, BelgiumE. S. BolsVrije Universiteit Brussel, Brussels, BelgiumJ. D’HondtVrije Universiteit Brussel, Brussels, BelgiumA. De MoorVrije Universiteit Brussel, Brussels, BelgiumM. DelcourtVrije Universiteit Brussel, Brussels, BelgiumH. El FahamVrije Universiteit Brussel, Brussels, BelgiumS. LowetteVrije Universiteit Brussel, Brussels, BelgiumA. MortonVrije Universiteit Brussel, Brussels, BelgiumD. MüllerVrije Universiteit Brussel, Brussels, BelgiumA. R. SahasransuVrije Universiteit Brussel, Brussels, BelgiumS. TavernierVrije Universiteit Brussel, Brussels, BelgiumW. Van DoninckVrije Universiteit Brussel, Brussels, BelgiumS. Van PutteVrije Universiteit Brussel, Brussels, BelgiumD. VanneromVrije Universiteit Brussel, Brussels, BelgiumB. ClerbauxUniversité Libre de Bruxelles, Brussels, BelgiumSoumya DansanaUniversité Libre de Bruxelles, Brussels, BelgiumG. De LentdeckerUniversité Libre de Bruxelles, Brussels, BelgiumL. FavartUniversité Libre de Bruxelles, Brussels, BelgiumD. HohovUniversité Libre de Bruxelles, Brussels, BelgiumJ. JaramilloUniversité Libre de Bruxelles, Brussels, BelgiumK. LeeKorea University, Seoul, KoreaM. MahdavikhorramiUniversité Libre de Bruxelles, Brussels, BelgiumI. MakarenkoUniversité Libre de Bruxelles, Brussels, BelgiumA. MalaraUniversité Libre de Bruxelles, Brussels, BelgiumS. ParedesUniversité Libre de Bruxelles, Brussels, BelgiumL. PétréUniversité Libre de Bruxelles, Brussels, BelgiumN. PostiauUniversité Libre de Bruxelles, Brussels, BelgiumLaurent ThomasUniversité Libre de Bruxelles, Brussels, BelgiumM. Vanden BemdenUniversité Libre de Bruxelles, Brussels, BelgiumC. Vander VeldeUniversité Libre de Bruxelles, Brussels, BelgiumP. VanlaerUniversité Libre de Bruxelles, Brussels, BelgiumD. DoburGhent University, Ghent, BelgiumJ. KnolleGhent University, Ghent, BelgiumLuka LambrechtGhent University, Ghent, BelgiumG. MestdachGhent University, Ghent, BelgiumCésar RendónGhent University, Ghent, BelgiumAmrutha SamalanGhent University, Ghent, BelgiumK. SkovpenGhent University, Ghent, BelgiumM. TytgatGhent University, Ghent, BelgiumN. Van Den BosscheGhent University, Ghent, BelgiumB. VermassenGhent University, Ghent, BelgiumLiam WezenbeekGhent University, Ghent, BelgiumA. BeneckeUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumG. BrunoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumF. BuryUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumC. CaputoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumP. DavidUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumC. DelaereUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumI. S. DonertasUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumA. GiammancoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumK. JaffelUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumSa. JainUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumV. Lemaı̂treUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumK. MondalUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumA. TaliercioUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumT. T. TranUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumP. VischiaUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumS. WertzUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumG. A. AlvesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilE. CoelhoCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilC. HenselCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilA. MoraesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilP. Rebello TelesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilW. L. Aldá JúniorUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilM. Alves Gallo PereiraUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilM. Barroso Ferreira FilhoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilH. Brandao MalbouissonUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilW. CarvalhoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilJ. ChinellatoUniversidade Estadual de Campinas, Campinas, BrazilE. M. Da CostaUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilG. G. Da SilveiraFederal University of Rio Grande do Sul, Porto Alegre, BrazilD. De Jesus DamiãoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilV. Dos Santos SousaUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilS. Fonseca De SouzaUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil

The European Physical Journal Cjournal2023en

ABI

Аннотация

Abstract A search for decays to invisible particles of Higgs bosons produced in association with a top-antitop quark pair or a vector boson, which both decay to a fully hadronic final state, has been performed using proton-proton collision data collected at $${\sqrt{s}=13\,\text {Te}\hspace{-.08em}\text {V}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>13</mml:mn> <mml:mspace/> <mml:mtext>Te</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> </mml:math> by the CMS experiment at the LHC, corresponding to an integrated luminosity of 138 $$\,\text {fb}^{-1}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace/> <mml:msup> <mml:mtext>fb</mml:mtext> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> </mml:math> . The 95% confidence level upper limit set on the branching fraction of the 125 $$\,\text {Ge}\hspace{-.08em}\text {V}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> </mml:math> Higgs boson to invisible particles, $${\mathcal {B}({\textrm{H}} \rightarrow \text {inv})}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>B</mml:mi> <mml:mo>(</mml:mo> <mml:mtext>H</mml:mtext> <mml:mo>→</mml:mo> <mml:mtext>inv</mml:mtext> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> , is 0.54 (0.39 expected), assuming standard model production cross sections. The results of this analysis are combined with previous $${\mathcal {B}({\textrm{H}} \rightarrow \text {inv})}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>B</mml:mi> <mml:mo>(</mml:mo> <mml:mtext>H</mml:mtext> <mml:mo>→</mml:mo> <mml:mtext>inv</mml:mtext> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> searches carried out at $${\sqrt{s}=7}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>7</mml:mn> </mml:mrow> </mml:math> , 8, and 13 $$\,\text {Te}\hspace{-.08em}\text {V}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mspace/> <mml:mtext>Te</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> </mml:math> in complementary production modes. The combined upper limit at 95% confidence level on $${\mathcal {B}({\textrm{H}} \rightarrow \text {inv})}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>B</mml:mi> <mml:mo>(</mml:mo> <mml:mtext>H</mml:mtext> <mml:mo>→</mml:mo> <mml:mtext>inv</mml:mtext> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> is 0.15 (0.08 expected).

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Мавзулар

Particle physics theoretical and experimental studies High-Energy Particle Collisions Research Quantum Chromodynamics and Particle Interactions

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DOI: 10.1140/epjc/s10052-023-11952-7

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