Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/137557
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Type: | Journal article |
Title: | Search for Higgs boson pair production in the two bottom quarks plus two photons final state in pp collisions at √s=13 TeV with the ATLAS detector |
Other Titles: | Search for Higgs boson pair production in the two bottom quarks plus two photons final state in pp collisions at root s=13TeV with the ATLAS detector |
Author: | Aad, G. Abbott, B. Abbott, D.C. Abed Abud, A. Abeling, K. Abhayasinghe, D.K. Abidi, S.H. Abramowicz, H. Abreu, H. Abulaiti, Y. Abusleme Hoffman, A.C. Acharya, B.S. Achkar, B. Adam, L. Adam Bourdarios, C. Adamczyk, L. Adamek, L. Adelman, J. Adiguzel, A. Adorni, S. et al. |
Citation: | Physical Review D (particles, fields, gravitation, and cosmology), 2022; 106(5):052001-1-052001-35 |
Publisher: | American Physical Society (APS) |
Issue Date: | 2022 |
ISSN: | 2470-0010 2470-0029 |
Statement of Responsibility: | G. Aad ... D. Duvnjak ... P. Jackson ... A. X. Y. Kong ... H. Potti ... T. A. Ruggeri ... A. S. Sharma ... M. J. White ... et al. (ATLAS Collaboration) |
Abstract: | Searches are performed for nonresonant and resonant di-Higgs boson production in the b¯bγγ final state. The dataset used corresponds to an integrated luminosity of 139 fb−1 of proton–proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. No excess above the expected background is found and upper limits on the di-Higgs boson production cross sections are set. A 95% confidence-level upper limit of 4.2 times the cross section predicted by the Standard Model is set on pp→HH nonresonant production, where the expected limit is 5.7 times the Standard Model predicted value. The expected constraints are obtained for a background hypothesis excluding pp→HH production. The observed (expected) constraints on the Higgs boson trilinear coupling modifier κλ are determined to be [−1.5,6.7] ([−2.4,7.7]) at 95% confidence level, where the expected constraints on κλ are obtained excluding pp→HH production from the background hypothesis. For resonant production of a new hypothetical scalar particle X (X→HH→b¯bγγ), limits on the cross section for pp→X→HH are presented in the narrow-width approximation as a function of mX in the range 251 GeV≤mX≤1000 GeV. The observed (expected) limits on the cross section for pp→X→HH range from 640 fb to 44 fb (391 fb to 46 fb) over the considered mass range. |
Description: | Published 6 September 2022 |
Rights: | © 2022 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. |
DOI: | 10.1103/physrevd.106.052001 |
Published version: | http://dx.doi.org/10.1103/physrevd.106.052001 |
Appears in Collections: | Physics publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_137557.pdf | Published version | 1.3 MB | Adobe PDF | View/Open |
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