Anomaly detection search for new resonances decaying into a Higgs boson and a generic new particle X in hadronic final states using Formula Presented pp collisions with the ATLAS detector
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PhysRevD.108.052009.pdf
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Author
Amerl, M.Filmer, E.K.
Jackson, P.
Kong, A.X.Y.
Potti, H.
Ruggeri, T.A.
Ting, E.X.L.
White, M.J.
Gingrich, D.M.
Lindon, J.H.
Nishu, N.
Pinfold, J.L.
Cakir, O.
Duran, Yildiz, H.
Kuday, S.
Turk, Cakir, I.
Sultansoy, S.
Adam, Bourdarios, C.
Berger, N.
Costanza, F.
Delmastro, M.
Di, Ciaccio, L.
Goy, C.
Guillemin, T.
Hryn’ova, T.
Jézéquel, S.
Koletsou, I.
Levêque, J.
Lewis, D.J.
Little, J.D.
Lorenzo, Martinez, N.
Poddar, G.
Rossi, E.
Sanchez, Pineda, A.
Sauvan, E.
Selem, L.
Bernardi, G.
Bomben, M.
Bouquet, R.
Di, Gregorio, G.
Li, A.
Marchiori, G.
Shen, Q.
Zhang, Y.
Chekanov, S.
Darmora, S.
Hopkins, W.H.
Hoya, J.
Kourlitis, E.
LeCompte, T.
Love, J.
Metcalfe, J.
Mete, A.S.
Paramonov, A.
Proudfoot, J.
van Gemmeren, P.
Wang, R.
Zhang, J.
Berlendis, S.
Cheu, E.
Cui, Z.
Ghosh, A.
Johns, K.A.
Lampl, W.
Lindley, R.E.
Loch, P.
Rutherfoord, J.P.
Sardain, J.
Varnes, E.W.
Zhou, H.
Zhou, Y.
Bakshi, Gupta, D.
Burghgrave, B.
Cardenas, J.C.J.
De, K.
Farbin, A.
Hadavand, H.K.
Myers, A.J.
Ozturk, N.
Usai, G.
White, A.
Angelidakis, S.
Fassouliotis, D.
Fountas, L.
Gkialas, I.
Kourkoumelis, C.
Alexopoulos, T.
Bakalis, C.
Drivas-Koulouris, I.
Gazis, E.N.
Kitsaki, C.
Maltezos, S.
Paraskevopoulos, C.
Perganti, M.
Tzanis, P.
Andeen, T.
Burton, C.D.
Choi, K.
Onyisi, P.U.E.
Panchal, D.K.
Tost, M.
Unal, M.
Webb, A.F.
Huseynov, N.
Agaras, M.N.
Bosman, M.
Carlotto, J.I.
Casado, M.P.
Castillo, Garcia, L.
Epari, S.
Gautam, V.
Gonzalez, Fernandez, S.
Grieco, C.
Grinstein, S.
Juste, Rozas, A.
Kazakos, S.
Korolkov, I.
Mamuzic, J.
Martinez, M.
Martinez, Suarez, P.
Mir, L.M.
Munoz, Martinez, J.L.
Orlando, N.
Pacheco, Pages, A.
Padilla, Aranda, C.
Riu, I.
Salvador, Salas, A.
Sonay, A.
Terzo, S.
Barreiro, Guimarães, da, Costa, J.
Cai, Y.
Chu, X.
Cui, H.
Fan, Y.
Fang, Y.
García, Pascual, J.A.
Guo, F.
Hu, Y.F.
Huang, Y.
Jia, X.
Li, M.
Li, S.
Li, Z.
Liang, Z.
Liu, B.
Liu, P.
Lou, X.
Lu, G.
Lyu, F.
Mohammed, A.F.
Shan, L.Y.
Wu, J.
Xin, S.
Xu, D.
Xu, Z.
Yang, X.
Zhang, K.
Zhang, P.
Zhu, C.
Zhu, H.
Zhuang, X.
Chen, X.
Ding, W.
Feng, M.
Li, B.
Pang, H.
Xia, M.
Xu, Y.
Zhang, G.
Ayoub, M.K.
Chen, H.
Chen, S.J.
de Maria, A.
D’Onofrio, A.
Han, L.
Huang, X.
Jia, Z.
Jin, S.
Li, H.
Liu, Y.
Lucio, Alves, F.L.
Min, T.
Wang, X.
Wang, Y.
Xia, L.
Ye, H.
Zhang, B.
Zhang, L.
Ran, K.
Bakos, E.
Beemster, L.J.
Jovicevic, J.
Maksimovic, V.
Sijacki, Dj.
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Buanes, T.
Djuvsland, J.I.
Eigen, G.
Fomin, N.
Huiberts, S.K.
Lee, G.R.
Lipniacka, A.
Martin, dit, Latour, B.
Stugu, B.
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Antrim, D.J.A.
Barnett, R.M.
Beringer, J.
Calafiura, P.
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Ciocio, A.
Dimitrievska, A.
Dyckes, G.I.
Einsweiler, K.
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Nachman, B.P.
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Pagan, Griso, S.
Pascuzzi, V.R.
Pettee, M.
Pianori, E.
Resseguie, E.D.
Reynolds, E.
Roberts, B.R.
Santpur, S.N.
Shapiro, M.
Stanislaus, B.
Tsulaia, V.
Varni, C.
Wang, H.
Xiong, J.
Yamazaki, T.
Yao, W.-M.
Yeo, B.K.
Zhang, Z.
Appelt, C.
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Affiliation
Department of Physics, University of ArizonaIssue Date
2023-09-18
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American Physical SocietyCitation
ATLAS Collaboration. (2023). Anomaly detection search for new resonances decaying into a Higgs boson and a generic new particle X in hadronic final states using √s=13 TeV pp collisions with the ATLAS detector. Physical Reivew D, 108(5), 052009.Journal
Physical Review DRights
© 2023 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
A search is presented for a heavy resonance Formula Presented decaying into a Standard Model Higgs boson Formula Presented and a new particle Formula Presented in a fully hadronic final state. The full Large Hadron Collider run 2 dataset of proton-proton collisions at Formula Presented collected by the ATLAS detector from 2015 to 2018 is used and corresponds to an integrated luminosity of Formula Presented. The search targets the high Formula Presented-mass region, where the Formula Presented and Formula Presented have a significant Lorentz boost in the laboratory frame. A novel application of anomaly detection is used to define a general signal region, where events are selected solely because of their incompatibility with a learned background-only model. It is constructed using a jet-level tagger for signal-model-independent selection of the boosted Formula Presented particle, representing the first application of fully unsupervised machine learning to an ATLAS analysis. Two additional signal regions are implemented to target a benchmark Formula Presented decay into two quarks, covering topologies where the Formula Presented is reconstructed as either a single large-radius jet or two small-radius jets. The analysis selects Higgs boson decays into Formula Presented, and a dedicated neural-network-based tagger provides sensitivity to the boosted heavy-flavor topology. No significant excess of data over the expected background is observed, and the results are presented as upper limits on the production cross section Formula Presented) for signals with Formula Presented between 1.5 and 6 TeV and Formula Presented between 65 and 3000 GeV. © 2023 CERN, for the ATLAS Collaboration.Note
Open access articleISSN
2470-0010Version
Final Published Versionae974a485f413a2113503eed53cd6c53
10.1103/PhysRevD.108.052009
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Except where otherwise noted, this item's license is described as © 2023 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license.