We present the first direct search for exotic Higgs boson decays H -> AA, A -> gamma gamma in events with two photonlike objects. The hypothetical particle A is a low-mass spin-0 particle decaying promptly to a merged diphoton reconstructed as a single photonlike object. We analyze the data collected by the CMS ffiffi experiment at V s = 13 TeV corresponding to an integrated luminosity of 136 fb-1. No excess above the estimated background is found. We set upper limits on the branching fraction B(H -> AA -> 4 gamma) of (0.9-3.3) x 10-3 at 95% confidence level for masses of A in the range 0.1-1.2 GeV.

Search for exotic Higgs boson decays H->AA->4γ with events containing two merged diphotons in proton-proton collisions at √s =13 TeV / Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Chatterjee, S., Damanakis, K., Dragicevic, M., Escalante Del Valle, A., Hussain, P. S., Jeitler, M., Krammer, N., Lechner, L., Liko, D., Mikulec, I., Paulitsch, P., Pitters, F. M., Schieck, J., Schöfbeck, R., Schwarz, D., Templ, S., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 131:10(2023), pp. 1-19. [10.1103/physrevlett.131.101801]

Search for exotic Higgs boson decays H->AA->4γ with events containing two merged diphotons in proton-proton collisions at √s =13 TeV

Del Re, D.;Organtini, G.;Paramatti, R.;Quaranta, C.;Rahatlou, S.;Santanastasio, F.;
2023

Abstract

We present the first direct search for exotic Higgs boson decays H -> AA, A -> gamma gamma in events with two photonlike objects. The hypothetical particle A is a low-mass spin-0 particle decaying promptly to a merged diphoton reconstructed as a single photonlike object. We analyze the data collected by the CMS ffiffi experiment at V s = 13 TeV corresponding to an integrated luminosity of 136 fb-1. No excess above the estimated background is found. We set upper limits on the branching fraction B(H -> AA -> 4 gamma) of (0.9-3.3) x 10-3 at 95% confidence level for masses of A in the range 0.1-1.2 GeV.
2023
CMS; LHC; exotic Higgs decays
01 Pubblicazione su rivista::01a Articolo in rivista
Search for exotic Higgs boson decays H->AA->4γ with events containing two merged diphotons in proton-proton collisions at √s =13 TeV / Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Chatterjee, S., Damanakis, K., Dragicevic, M., Escalante Del Valle, A., Hussain, P. S., Jeitler, M., Krammer, N., Lechner, L., Liko, D., Mikulec, I., Paulitsch, P., Pitters, F. M., Schieck, J., Schöfbeck, R., Schwarz, D., Templ, S., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 131:10(2023), pp. 1-19. [10.1103/physrevlett.131.101801]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1720076
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