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Measurement of exclusive γ γ → W + W − production and search for exclusive Higgs boson production in p p collisions at √ s = 8     TeV using the ATLAS detector
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
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Number of Authors: 28602016 (English)In: Physical Review D covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, Vol. 94, no 3, article id 032011Article in journal (Refereed) Published
Abstract [en]

Searches for exclusively produced W boson pairs in the process ppðγγÞ → pWþW−p and an exclusively produced Higgs boson in the process ppðggÞ → pHp have been performed using eμ∓ final states. These measurements use 20.2 fb−1 of pp collisions collected by the ATLAS experiment at a center-of-mass energy ffiffi s p ¼ 8 TeV at the LHC. Exclusive production of WþW− consistent with the Standard Model prediction is found with 3.0σ significance. The exclusive WþW− production cross section is determined to be σðγγ → WþW− → eμ∓XÞ ¼ 6.9 2.2ðstatÞ 1.4ðsysÞ 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 < aW 0 =Λ2 < 1.7 × 10−6 GeV−2 and −6.4 × 10−6 < aW C =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. DO

Place, publisher, year, edition, pages
2016. Vol. 94, no 3, article id 032011
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-316078DOI: 10.1103/PhysRevD.94.032011ISI: 000383046500001OAI: oai:DiVA.org:uu-316078DiVA, id: diva2:1076964
Note

ATLAS Collaboration, for complete list of authors see https://doi.org/10.1103/PhysRevD.94.032011

We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN,Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/ IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, USA. In addition, individual groups and members have received support from BCKDF, the Canada Council, CANARIE, CRC, Compute Canada, FQRNT, and the Ontario Innovation Trust, Canada; EPLANET, ERC, FP7, Horizon 2020 and Marie Skłodowska-Curie Actions, European Union; Investissements d’Avenir Labex and Idex, ANR, Région Auvergne and Fondation Partager le Savoir, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF; BSF, GIF and Minerva, Israel; BRF, Norway; Generalitat de Catalunya, Generalitat Valenciana, Spain; the Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular, from CERN, the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFNCNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK), BNL (USA), the Tier-2 facilities worldwide and large non-WLCG resource providers

Available from: 2017-02-24 Created: 2017-02-24 Last updated: 2017-02-24Bibliographically approved

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