Please use this identifier to cite or link to this item: https://bura.brunel.ac.uk/handle/2438/34007
Title: Search for exotic Higgs boson decays H → 𝒜𝒜 with 𝒜 → γγ in events with a semi-merged topology in proton-proton collisions at √𝑠 = 13 TeV
Authors: Hayrapetyan, A
Makarenko, V
Tumasyan, A
Adam, W
Andrejkovic, JW
Benato, L
Bergauer, T
Dragicevic, M
Giordano, C
Hussain, PS
Jeitler, M
Demaria, N
Sancar, O
Orfanelli, S
Kazana, M
Palmer, C
Pantaleo, F
Guo, Q
Soha, A
Nürnberg, A
Matchev, K
Riggirello, M
Sarkar, U
Kim, J
Pari, M
Petrucciani, G
Dordevic, M
Pfeiffer, A
Gallegos Maríñez, LG
Akhter, T
Hou, Q
Pierini, M
Pitt, M
Sarkisovi, V
Klyukhin, V
Schonbeck, N
Hadjiiska, R
Von Cube, RF
Kang, DY
Budkouski, D
Park, J
Qin, X
Qu, H
Apresyan, A
Tiwari, PC
Dogra, S
Rabady, D
Sun, X
Papageorgakis, C
Alexe, CA
Reimers, A
Ribeiro Lopes, B
Osterberg, K
Hiltbrand, J
Piotrzkowski, K
Nayak, S
Riti, F
Cota Rodriguez, A
Paramesvaran, S
Tiras, E
Zolkapli, Z
Stepennov, A
Kodolova, O
Rosado, P
Rovere, M
Massironi, A
Kovalskyi, D
Sakulin, H
Von Den Driesch, J
Asenov, P
Kim, MS
Dash, G
Salvatico, R
de Barbaro, P
Afanasiev, S
Sanchez Cruz, S
Clerbaux, B
Schmidt, A
Iaydjiev, P
Adams, MR
Hong, J
Spiegel, L
Paranjpe, MM
Lin, Z
McMaster, B
Korenkov, V
Scarfi, S
Pearson, E
Re, V
Androsov, K
Selvaggi, M
Sharma, A
Oh, BH
Savva, K
Blend, D
Stenson, K
Shchelina, K
Silva, P
Wassmer, M
Seth, C
Stoynev, S
Sphicas, P
Stahl Leiton, AG
Bolshov, A
Perez, CU
Knolle, J
Steen, A
Ulmer, KA
Summers, S
Korsakov, I
Bainbridge, R
Hong, B
Luongo, F
Treille, D
Azzurri, P
Hwang, K
Kim, J
Bouhali, O
Chang, P
Wagner, SR
Gomes De Souza, R
Zhizhin, I
León Coello, M
Rumerio, P
Shopova, M
Tropea, P
Vernazza, E
Wolf, R
Wanczyk, J
Ranken, E
Wuchterl, S
Kozyrev, A
Noonan, D
Skovpen, K
Lavezzo, L
Reyes-Almanza, R
Zarucki, M
Bagliesi, G
Usai, E
Samudio, J
Strait, J
Zehetner, P
Zejdl, P
Zevi Della Porta, G
Oreshkin, V
Kalogeropoulos, A
Saka, H
Popova, E
Rogan, C
Raspereza, A
Leontsinis, S
Bevilacqua, T
Kim, T
Caminada, L
Cavanaugh, R
Sharma, A
You, Z
Cockerill, DJA
Acharya, S
Bianchini, L
Gwak, P
Menasce, D
Sultanov, G
Erdmann, W
Cagnotta, A
Sawant, S
Hakala, J
Rastorguev, D
Horisberger, R
Ingram, Q
Zipper, N
Datta, K
Yi, R
Kaestli, HC
Moroni, L
Kotlinski, D
Lange, C
Pinheiro, JP
Shevelev, A
Mota Amarilo, K
Langenegger, U
Basile, C
Rejeb Sfar, H
Boccali, T
Sommerhalder, M
Gutsche, O
Noehte, L
Lange, W
Tavernier, S
Forti, R
Zeuner, WD
Lee, D
Eysermans, J
Seo, J
Lopez-Fernandez, R
Mcginn, C
Rohe, T
Samalan, A
Dimitrov, A
Ceard, L
Haza, G
Crotte Ledesma, H
Aarrestad, TK
Cholak, S
Novak, T
Solanki, P
Sanjrani, MS
Kosmoglou Kioseoglou, PG
Yohay, R
De Castro, G
Monteno, M
Shooshtari, M
Lee, K
Onengut, G
Paganoni, M
De Bryas Dexmiers D’Archiacchiac, P
Lee, KS
Jiang, CH
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Radchenko, O
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Gokbulut, G
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Erice, C
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Ozdemir, K
Hummer, F
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Pesaresi, M
Barman, S
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Chen, Y
Müller, Th
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Lee, Y-J
Savina, M
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Ligabue, F
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Aleksandrov, A
Tonelli Manganote, EJ
Uttley, GP
Kallonen, KTS
Naimuddin, M
Janot, P
Kaluzinska, O
Karacheban, O
Nair, LP
Lavizzari, G
Karathanasis, G
De Leo, K
Palni, P
Valencia Palomo, L
Coelho, E
Cankocak, K
Sexton-Kennedy, E
Park, MI
Spanier, S
Laurila, S
Lecoq, P
Leutgeb, E
Tsionou, D
Lee, H
Lourenço, C
Fokow, P
Niedziela, J
Siviero, F
Verstege, C
Major, P
Lyon, A-M
Magherini, M
Aebi, D
Donato, S
Pelliccioni, M
Antchev, G
Lucchini, MT
Akrap, P
Tedeschi, T
Teague, D
Karjavine, V
Malgeri, L
Mannelli, M
Bala, A
Mehta, A
Redjeb, W
Della Ricca, G
Ahmad, M
Meijers, F
Horzela, M
Gleyzer, SV
Savard, C
Hegde, V
Merlin, JA
Voigtländer, T
Smith, N
Reithler, H
Mersi, S
Aimè, C
Mignerey, AC
Savrin, V
Krolikowski, J
Malberti, M
Bruschini, D
Kirsanov, M
Meschi, E
Khukhunaishvili, A
Roy, T
Migliorini, M
Monti, F
Moortgat, F
Danev, P
Mulders, M
Nemes, F
Schieck, J
Bortignon, P
Malvezzi, S
Shelake, M
Dutta, V
Musich, M
Colling, D
Wilson, G
Taylor, L
Joo, C
Delli Gatti, R
Konecki, M
Ptochos, F
Simsek, E
Neutelings, I
Keywords: Beyond Standard Model;hadron-hadron scattering;Higgs physics;photon production
Issue Date: 13-Jul-2026
Publisher: Springer Nature on behalf of SISSA
Citation: Hayrapetyan, A. et al. for the benefit of the CMS Collaboration (2026) 'Search for exotic Higgs boson decays H → 𝒜𝒜 with 𝒜 → γγ in events with a semi-merged topology in proton-proton collisions at √𝑠 = 13 TeV', Journal of High Energy Physics, 2026(7), 119, pp. 1–44. doi: 10.1007/jhep07(2026)119.
Abstract: A search for exotic Higgs boson decays H → 𝒜𝒜, with 𝒜 → γγ is presented, using events with a semi-merged topology. One of the hypothetical particles, 𝒜, is assumed to decay promptly into a semi-merged diphoton system reconstructed as a single photon-like object, while the other 𝒜 decays into two resolved photons. The search is performed using proton-proton collision data collected by the CMS experiment at √𝑠 = 13 TeV, corresponding to an integrated luminosity of 138 fb⁻¹. The data agree with the standard model background expectation. Upper limits are set on the product of the Higgs boson production cross section and the branching fraction, σ (pp → H) ℬ(H → 𝒜𝒜 → 4γ), which range from 0.264 to 0.005 pb at 95% confidence level, for 𝒜 masses in the range 1 < m<sub>𝒜</sub> < 15 GeV. These limits are the most stringent to date in the 1–5 GeV m<sub>𝒜</sub> range.
Description: Data Availability Statement: Release and preservation of data used by the CMS Collaboration as the basis for publications is guided by the CMS data preservation, re-use and open access policy (https://opendata.cern.ch/record/415).
Code Availability Statement: The CMS core software is publicly available on GitHub (https://github.com/cms-sw/cmssw).
URI: https://bura.brunel.ac.uk/handle/2438/34007
DOI: https://doi.org/10.1007/jhep07(2026)119
ISSN: 1126-6708
Appears in Collections:Department of Electronic and Electrical Engineering Research Papers

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