This Letter presents results from a combination of searches for Higgs boson pair production using [formula] of proton-proton collision data at [formula] recorded with the ATLAS detector. At 95% confidence level (CL), the upper limit on the production rate is 2.9 times the standard model (SM) prediction, with an expected limit of 2.4 assuming no Higgs boson pair production. Constraints on the Higgs boson self-coupling modifier [formula], and the quartic [formula] coupling modifier [formula], are derived individually, fixing the other parameter to its SM value. The observed 95% CL intervals are [formula] and [formula], respectively, while the expected intervals are [formula] and [formula] in the SM case. Constraints obtained for several interaction parameters within Higgs effective field theory are the strongest to date, offering insights into potential deviations from SM predictions.

Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N.???j., et al. (2024). Combination of Searches for Higgs Boson Pair Production in pp Collisions at √s=13  TeV with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 133(10), 101801-1-101801-22 [10.1103/physrevlett.133.101801].

Combination of Searches for Higgs Boson Pair Production in pp Collisions at √s=13  TeV with the ATLAS Detector

F. Alfonsi;E. Ballabene;L. Bellagamba;G. Bianco;D. Boscherini;A. Bruni;G. Carratta;F. ???A. Corchia;D. Cremonini;S. De Castro;F. Fabbri;L. Fabbri;M. Franchini;A. Gabrielli;B. Giacobbe;F. Lasagni Manghi;G. Levrini;S. Nechaeva;A. Polini;L. Rinaldi;M. Romano;E. Sanzani;C. Sbarra;A. Sbrizzi;N. Semprini-Cesari;M. Sioli;K. Todome;S. Valentinetti;M. Villa;C. Vittori;I. Vivarelli;A. Zoccoli;
2024

Abstract

This Letter presents results from a combination of searches for Higgs boson pair production using [formula] of proton-proton collision data at [formula] recorded with the ATLAS detector. At 95% confidence level (CL), the upper limit on the production rate is 2.9 times the standard model (SM) prediction, with an expected limit of 2.4 assuming no Higgs boson pair production. Constraints on the Higgs boson self-coupling modifier [formula], and the quartic [formula] coupling modifier [formula], are derived individually, fixing the other parameter to its SM value. The observed 95% CL intervals are [formula] and [formula], respectively, while the expected intervals are [formula] and [formula] in the SM case. Constraints obtained for several interaction parameters within Higgs effective field theory are the strongest to date, offering insights into potential deviations from SM predictions.
2024
Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N.???j., et al. (2024). Combination of Searches for Higgs Boson Pair Production in pp Collisions at √s=13  TeV with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 133(10), 101801-1-101801-22 [10.1103/physrevlett.133.101801].
Aad, G.; Aakvaag, E.; Abbott, B.; Abdelhameed, S.; Abeling, K.; Abicht, N. ???j.; Abidi, S. ???h.; Aboelela, M.; Aboulhorma, A.; Abramowicz, H.; Abreu...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1011037
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