Kimura, Naoki;
ATLAS Collaboration;
(2023)
Search for nonresonant pair production of Higgs bosons in the
b
¯
b
b
¯
b
final state in
p
p
collisions at
√
s
=
13
TeV
with the ATLAS detector.
Physical Review D: Particles, Fields, Gravitation and Cosmology
, 108
, Article 052003. 10.1103/PhysRevD.108.052003.
Preview |
PDF
PhysRevD.108.052003.pdf - Published Version Download (51MB) | Preview |
Abstract
A search for nonresonant Higgs boson pair production in the b ¯ b b ¯ b final state is presented. The analysis uses 126 fb − 1 of p p collision data at √ s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider, and targets both the gluon-gluon fusion and vector-boson fusion production modes. No evidence of the signal is found and the observed (expected) upper limit on the cross section for nonresonant Higgs boson pair production is determined to be 5.4 (8.1) times the Standard Model predicted cross section at 95% confidence level. Constraints are placed on modifiers to the H H H and H H V V couplings. The observed (expected) 2 σ constraints on the H H H coupling modifier, κ λ , are determined to be [ − 3.5 , 11.3 ] ( [ − 5.4 , 11.4 ] ), while the corresponding constraints for the H H V V coupling modifier, κ 2 V , are [ − 0.0 , 2.1 ] ( [ − 0.1 , 2.1 ] ). In addition, constraints on relevant coefficients are derived in the context of the Standard Model effective field theory and Higgs effective field theory, and upper limits on the H H production cross section are placed in seven Higgs effective field theory benchmark scenarios.
| Type: | Article |
|---|---|
| Title: | Search for nonresonant pair production of Higgs bosons in the b ¯ b b ¯ b final state in p p collisions at √ s = 13 TeV with the ATLAS detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevD.108.052003 |
| Publisher version: | https://doi.org/10.1103/PhysRevD.108.052003 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third-party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | Extensions of Higgs sector, Signatures with Higgs bosons, Hadron colliders |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10176449 |
Archive Staff Only
 |
View Item |
