Publications by Cigdem Issever


Search for pair production of Higgs bosons in the bb¯bb¯ final state using proton-proton collisions at sqrt(s)=13  TeV with the ATLAS detector

Physical Review D American Physical Society 94 (2016) 1-29

C Issever, K Becker, AM Cooper-Sarkar, M Crispin Ortuzar, EJ Gallas, WJ Fawcett, JA Frost, F Guili, S Gupta, C Gwenlan, M Petrov, MA Pickering, J Zhong, JC-L Tseng, GHA Viehhauser, L Vigani, AR Weidberg, AJ Barr, L Beresford, D Bortoletto, N Norjaharuddeen, J Henderson, CP Hays, RB Nickerson, TB Huffman

A search for Higgs-boson pair production in the bb¯bb¯ final state is carried out with 3.2  fb−1 of proton-proton collision data collected at s√=13  TeV with the ATLAS detector. The data are consistent with the estimated background and are used to set upper limits on the production cross section of Higgs-boson pairs times branching ratio to bb¯bb¯ for both nonresonant and resonant production. In the case of resonant production of Kaluza-Klein gravitons within the Randall-Sundrum model, upper limits in the 24 to 91 fb range are obtained for masses between 600 and 3000 GeV, at the 95% confidence level. The production cross section times branching ratio for nonresonant Higgs-boson pairs is also constrained to be less than 1.22 pb, at the 95% confidence level.


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