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oai:tsukuba.repo.nii.ac.jp:00040079
2023-12-21T07:58:53Z
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Measurement of exclusive γγ→W+W- production and search for exclusive Higgs boson production in pp collisions at √s=8 TeV using the ATLAS detector
ATLA Collaboration
Hara, K.
原, 和彦
ハラ, カズヒコ
Kim, S. H.
金, 信弘
キム, シンホン
Okawa, H.
大川, 英希
オオカワ, ヒデキ
Sato, K.
佐藤, 構二
サトウ, コウジ
Ukegawa, F.
受川, 史彦
ウケガワ, フミヒコ
Searches for exclusively produced W boson pairs in the process pp(γγ)→pW+W-p and an exclusively produced Higgs boson in the process pp(gg)→pHp have been performed using e±μ∓ final states. These measurements use 20.2 fb^-1 of pp collisions collected by the ATLAS experiment at a center-of-mass energy √s=8 TeV at the LHC. Exclusive production of W+W-consistent with the Standard Model prediction is found with 3.0σ significance. The exclusive W+W- production cross section is determined to be σ(γγ→W+W-→e±μ∓X)=6.9±2.2(stat)±1.4(sys) fb, in agreement with the Standard Model prediction. Limits on anomalous quartic gauge couplings are set at 95% confidence level as -1.7×10^-6<aW0/Λ2<1.7×10^-6 GeV^-2 and -6.4×10^-6<aWC/Λ2<6.3×10^-6 GeV^-2. A 95% confidence-level upper limit on the total production cross section for an exclusive Higgs boson is set to 1.2 pb.
journal article
American Physical Society
2016-08
application/pdf
Physical review D
3
94
032011
2470-0010
AA00773624
https://tsukuba.repo.nii.ac.jp/record/40079/files/PRD_94-3-032011.pdf
eng
https://doi.org/10.1103/PhysRevD.94.032011
Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
(c) 2016 CERN, for the ATLAS Collaboration
open access