Search for Heavy Resonances Decaying into a Photon and a Hadronically Decaying Higgs Boson in pp Collisions at sqrt[s]=13  TeV with the ATLAS Detector

Search for Heavy Resonances Decaying into a Photon and a Hadronically Decaying Higgs Boson in pp Collisions at sqrt[s]=13  TeV with the ATLAS Detector

This Letter presents a search for the production of new heavy resonances decaying into a Higgs boson and a photon using proton-proton collision data at sqrt[s]=13  TeV collected by the ATLAS detector at the LHC. The data correspond to an integrated luminosity of 139  fb^{-1}. The analysis is perform...

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Veröffentlicht in:Phys.Rev.Lett 2020-12, Vol.125 (25), p.251802-251802
Hauptverfasser: Aad, G, Abbott, B, Abbott, D C, Abed Abud, A, Abeling, K, Abhayasinghe, D K, Abidi, S H, AbouZeid, O S, Abraham, N L, Abramowicz, H, Abreu, H, Abulaiti, Y, Acharya, B S, Achkar, B, Adam, L, Adam Bourdarios, C, Adamczyk, L, Adamek, L, Adelman, J, Adersberger, M, Adiguzel, A, Adorni, S, Adye, T, Affolder, A A, Afik, Y, Agapopoulou, C, Agaras, M N, Aggarwal, A, Agheorghiesei, C, Aguilar-Saavedra, J A, Ahmad, A, Ahmadov, F, Ahmed, W S, Ai, X, Aielli, G, Akatsuka, S, Akbiyik, M, Åkesson, T P A, Akilli, E, Akimov, A V, Al Khoury, K, Alberghi, G L, Albert, J, Alconada Verzini, M J, Alderweireldt, S, Aleksa, M, Aleksandrov, I N, Alexa, C, Alexopoulos, T, Alfonsi, A, Alfonsi, F, Alhroob, M, Ali, B, Ali, S, Aliev, M, Alimonti, G, Allaire, C, Allbrooke, B M M, Allen, B W, Allport, P P, Aloisio, A, Alonso, F, Alpigiani, C, Alunno Camelia, E, Alvarez Estevez, M, Alviggi, M G, Amaral Coutinho, Y, Ambler, A, Ambroz, L, Amelung, C, Amidei, D, Amor Dos Santos, S P, Amoroso, S, Amrouche, C S, An, F, Anastopoulos, C, Andari, N, Andeen, T, Anders, J K, Andrean, S Y, Andreazza, A, Andrei, V, Anelli, C R, Angelidakis, S, Angerami, A, Anisenkov, A V, Annovi, A, Antel, C, Anthony, M T, Antipov, E, Antonelli, M, Antrim, D J A, Anulli, F, Aoki, M, Aparisi Pozo, J A, Aparo, M A, Aperio Bella, L, Aranzabal, N, Araujo Ferraz, V, Araujo Pereira, R
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Sprache:eng
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High Energy Physics - Experiment
Physics
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Zusammenfassung:This Letter presents a search for the production of new heavy resonances decaying into a Higgs boson and a photon using proton-proton collision data at sqrt[s]=13  TeV collected by the ATLAS detector at the LHC. The data correspond to an integrated luminosity of 139  fb^{-1}. The analysis is performed by reconstructing hadronically decaying Higgs boson (H→bb[over ¯]) candidates as single large-radius jets. A novel algorithm using information about the jet constituents in the center-of-mass frame of the jet is implemented to identify the two b quarks in the single jet. No significant excess of events is observed above the expected background. Upper limits are set on the production cross-section times branching fraction for narrow spin-1 resonances decaying into a Higgs boson and a photon in the resonance mass range from 0.7 to 4 TeV, cross-section times branching fractions are excluded between 11.6 fb and 0.11 fb at a 95% confidence level.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.125.251802