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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
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0003-3867-0336
Number of Authors: 28602016 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 94, no 3, article id 032011Article in journal (Refereed) Published
Abstract [en]

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±μX)=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<a0W/Λ2<1.7×10-6 GeV-2 and -6.4×10-6<aCW/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.

Place, publisher, year, edition, pages
2016. Vol. 94, no 3, article id 032011
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-195579DOI: 10.1103/PhysRevD.94.032011ISI: 000383046500001Scopus ID: 2-s2.0-84989282845OAI: oai:DiVA.org:kth-195579DiVA, id: diva2:1044395
Note

QC 20161103

Available from: 2016-11-03 Created: 2016-11-03 Last updated: 2024-03-15Bibliographically approved

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Lund Jensen, Bengt

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