Allbrooke, Benedict, Asquith, Lily, Cerri, Alessandro, Chavez Barajas, Carlos, De Santo, Antonella, Potter, Tina, Salvatore, Fabrizio, Santoyo Castillo, Itzebelt, Suruliz, Kerim, Sutton, Mark, Vivarelli, Iacopo and The Atlas Collaboration, et al. (2016) 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. Physical Review D, 94. 032011. ISSN 1550-7998

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Abstract

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 <a W 0 /Λ 2 <1.7×10 −6   GeV −2 and −6.4×10 −6 <a W C /Λ 2 <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.

Item Type:	Article
Schools and Departments:	School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups:	Experimental Particle Physics Research Group
Subjects:	Q Science > QC Physics
Depositing User:	Richard Chambers
Date Deposited:	24 Oct 2016 15:13
Last Modified:	15 Mar 2017 01:07
URI:	http://srodev.sussex.ac.uk/id/eprint/64968

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