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Search for resonances decaying to an anomalous jet and a Higgs boson in proton–proton collisions at s=13TeV.

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Title: Search for resonances decaying to an anomalous jet and a Higgs boson in proton–proton collisions at s=13TeV.
Authors: Hayrapetyan, A.1 (AUTHOR), Makarenko, V.1 (AUTHOR), Tumasyan, A.1,2 (AUTHOR), Adam, W.3 (AUTHOR), Andrejkovic, J. W.3 (AUTHOR), Benato, L.3 (AUTHOR), Bergauer, T.3 (AUTHOR), Dragicevic, M.3 (AUTHOR), Giordano, C.3 (AUTHOR), Hussain, P. S.3 (AUTHOR), Jeitler, M.3,4 (AUTHOR), Krammer, N.3 (AUTHOR), Li, A.3 (AUTHOR), Liko, D.3 (AUTHOR), Matthewman, M.3 (AUTHOR), Mikulec, I.3 (AUTHOR), Schieck, J.3,4 (AUTHOR), Schöfbeck, R.3,4 (AUTHOR), Schwarz, D.3 (AUTHOR), Shooshtari, M.3 (AUTHOR)
Source: European Physical Journal C -- Particles & Fields. Feb2026, Vol. 86 Issue 2, p1-28. 28p.
Subjects: Higgs bosons, Particle decays, Outlier detection, Proton-proton interactions, Quarks, Resonance
Abstract: This paper presents a search for new physics through the process where a massive particle, X, decays into a Higgs boson and a second particle, Y. The Higgs boson subsequently decays into a bottom quark–antiquark pair, which is reconstructed as a single large-radius jet. The decay products of Yare also assumed to produce a single large-radius jet. The identification of the Yparticle is enhanced by computing the anomaly score of its candidate jet using an autoencoder, which measures deviations from typical quark- or gluon-induced jets. This allows a simultaneous search for multiple Ydecay scenarios within a single analysis. In the main benchmark process, Yis a scalar particle that decays into a Wboson pair. Two other scalar Ydecay processes are also considered as benchmarks: decays to a light quark–antiquark pair, and decays to a top quark–antiquark pair. A fourth benchmark process considers Yas a hadronically decaying top quark, arising from the decay of a vector-like quark into a top quark and a Higgs boson. Data recorded by the CMS experiment at a center-of-mass energy of 13 Te V in 2016–2018, corresponding to an integrated luminosity of 138 fb - 1 , are analyzed. The search covers Xmasses between 1.4 and 3.0 Te V and Ymasses between 90 and 400 Ge V , with all simulated signals produced in the narrow-width approximation. No significant excess above the standard model background expectation is observed. The most stringent upper limits to date are placed on benchmark signal cross sections for various masses of X and Y particles [ABSTRACT FROM AUTHOR]
Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
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  Data: Search for resonances decaying to an anomalous jet and a Higgs boson in proton–proton collisions at s=13TeV.
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  Data: <searchLink fieldCode="AR" term="%22Hayrapetyan%2C+A%2E%22">Hayrapetyan, A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Makarenko%2C+V%2E%22">Makarenko, V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tumasyan%2C+A%2E%22">Tumasyan, A.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Adam%2C+W%2E%22">Adam, W.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Andrejkovic%2C+J%2E+W%2E%22">Andrejkovic, J. W.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Benato%2C+L%2E%22">Benato, L.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bergauer%2C+T%2E%22">Bergauer, T.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dragicevic%2C+M%2E%22">Dragicevic, M.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Giordano%2C+C%2E%22">Giordano, C.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hussain%2C+P%2E+S%2E%22">Hussain, P. S.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jeitler%2C+M%2E%22">Jeitler, M.</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Krammer%2C+N%2E%22">Krammer, N.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+A%2E%22">Li, A.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liko%2C+D%2E%22">Liko, D.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Matthewman%2C+M%2E%22">Matthewman, M.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mikulec%2C+I%2E%22">Mikulec, I.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Schieck%2C+J%2E%22">Schieck, J.</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Schöfbeck%2C+R%2E%22">Schöfbeck, R.</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Schwarz%2C+D%2E%22">Schwarz, D.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shooshtari%2C+M%2E%22">Shooshtari, M.</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+C+--+Particles+%26+Fields%22">European Physical Journal C -- Particles & Fields</searchLink>. Feb2026, Vol. 86 Issue 2, p1-28. 28p.
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  Data: <searchLink fieldCode="DE" term="%22Higgs+bosons%22">Higgs bosons</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+decays%22">Particle decays</searchLink><br /><searchLink fieldCode="DE" term="%22Outlier+detection%22">Outlier detection</searchLink><br /><searchLink fieldCode="DE" term="%22Proton-proton+interactions%22">Proton-proton interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Quarks%22">Quarks</searchLink><br /><searchLink fieldCode="DE" term="%22Resonance%22">Resonance</searchLink>
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  Label: Abstract
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  Data: This paper presents a search for new physics through the process where a massive particle, X, decays into a Higgs boson and a second particle, Y. The Higgs boson subsequently decays into a bottom quark–antiquark pair, which is reconstructed as a single large-radius jet. The decay products of Yare also assumed to produce a single large-radius jet. The identification of the Yparticle is enhanced by computing the anomaly score of its candidate jet using an autoencoder, which measures deviations from typical quark- or gluon-induced jets. This allows a simultaneous search for multiple Ydecay scenarios within a single analysis. In the main benchmark process, Yis a scalar particle that decays into a Wboson pair. Two other scalar Ydecay processes are also considered as benchmarks: decays to a light quark–antiquark pair, and decays to a top quark–antiquark pair. A fourth benchmark process considers Yas a hadronically decaying top quark, arising from the decay of a vector-like quark into a top quark and a Higgs boson. Data recorded by the CMS experiment at a center-of-mass energy of 13 Te V in 2016–2018, corresponding to an integrated luminosity of 138 fb - 1 , are analyzed. The search covers Xmasses between 1.4 and 3.0 Te V and Ymasses between 90 and 400 Ge V , with all simulated signals produced in the narrow-width approximation. No significant excess above the standard model background expectation is observed. The most stringent upper limits to date are placed on benchmark signal cross sections for various masses of X and Y particles [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1140/epjc/s10052-025-15176-9
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        Text: English
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      – SubjectFull: Higgs bosons
        Type: general
      – SubjectFull: Particle decays
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      – SubjectFull: Outlier detection
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      – SubjectFull: Proton-proton interactions
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      – SubjectFull: Resonance
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      – TitleFull: Search for resonances decaying to an anomalous jet and a Higgs boson in proton–proton collisions at s=13TeV.
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              Text: Feb2026
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