Search for Higgs boson pair production in the two bottom quarks plus two photons final state in p p collisions at √{s }=13 TeV with the ATLAS detector
文献类型：期刊论文
| ; | |
| 作者 | ATLAS Collaboration |
| 刊名 | Physical Review D
 ; Physical Review D
|
| 出版日期 | 2022 ; 2022 |
| 卷号 | 106期号:5页码:052001 |
| 关键词 | Physics - Data Analysis Physics - Data Analysis Statistics and Probability High Energy Physics - Experiment Statistics - Applications Statistics and Probability High Energy Physics - Experiment Statistics - Applications |
| ISSN号 | 2470-0010 ; 2470-0010 |
| DOI | 10.1103/PhysRevD.106.052001 ; 10.1103/PhysRevD.106.052001 |
| 文献子类 | Article ; Article |
| 英文摘要 | Searches are performed for nonresonant and resonant di-Higgs boson production in the b b ¯γ γ 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 p p →H H 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 p p →H H 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 p p →H H production from the background hypothesis. For resonant production of a new hypothetical scalar particle X (X →H H →b b ¯γ γ ), limits on the cross section for p p →X →H H 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 p p →X →H H range from 640 fb to 44 fb (391 fb to 46 fb) over the considered mass range.; Searches are performed for nonresonant and resonant di-Higgs boson production in the b b ¯γ γ 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 p p →H H 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 p p →H H 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 p p →H H production from the background hypothesis. For resonant production of a new hypothetical scalar particle X (X →H H →b b ¯γ γ ), limits on the cross section for p p →X →H H 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 p p →X →H H range from 640 fb to 44 fb (391 fb to 46 fb) over the considered mass range. |
| 电子版国际标准刊号 | 2470-0029 ; 2470-0029 |
| 语种 | 英语 ; 英语 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/298791]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | ATLAS Collaboration. Search for Higgs boson pair production in the two bottom quarks plus two photons final state in p p collisions at √{s }=13 TeV with the ATLAS detector, Search for Higgs boson pair production in the two bottom quarks plus two photons final state in p p collisions at √{s }=13 TeV with the ATLAS detector[J]. Physical Review D, Physical Review D,2022, 2022,106, 106(5):052001, 052001. |
| APA | ATLAS Collaboration.(2022).Search for Higgs boson pair production in the two bottom quarks plus two photons final state in p p collisions at √{s }=13 TeV with the ATLAS detector.Physical Review D,106(5),052001. |
| MLA | ATLAS Collaboration."Search for Higgs boson pair production in the two bottom quarks plus two photons final state in p p collisions at √{s }=13 TeV with the ATLAS detector".Physical Review D 106.5(2022):052001. |
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来源：高能物理研究所
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