2015/12/14 by Haiying Cai, Cai, Haiying, Thomas Flacke +3 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.1512.04508
5 pages, 3 figures, 2 tables
arxiv created 2015/12/14 · arxiv updated 2015/12/15
We study the light scalar resonance sector of a composite Higgs model UV embedding based on the coset SU(4)/Sp(4). Beyond the Higgs multiplet, the pseudo Nambu-Goldstone sector of this model contains Standard Model singlets which couple to the Standard Model gauge bosons through Wess-Zumino-Witten anomaly terms. They can thus be produced in gluon fusion and decay into either gluons or pairs of electroweak gauge bosons WW, ZZ, Zγ, or γγ. In this letter we show that one of the pseudo Nambu-Goldstone boson states has appropriate couplings in order to explain a di-boson excess in the WW channel whilst not being excluded by LHC run I bounds on the di-jet, Zγ and γγ decay channels. A di-boson resonance production cross section of ∼ 10 fb at LHC run I is not a prediction of the model, but can be obtained if the confining gauge group is of high rank.