The Z_H → γH decay in the Littlest Higgs Model

2015/01/31 by J. I. Aranda, I. Cortes-Maldonado, F. Ramírez-Zavaleta +1 · 1 citation
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1088/0954-3899/43/2/025002

10 pages and 9 figures. Revised version

arxiv created 2015/09/27 · arxiv updated 2016/01/20

Abstract

We present the calculation of the Z_H → γH decay in the context of the Littlest Higgs model at one-loop level. Our calculations include the contributions of fermions, scalars and gauge bosons in accordance with the most recent experimental constraints on the parameters space of the model. We find branching ratios of the order of 10^-5 for the energy scale f=2,3,4 TeV on the 0.1<c<0.9 region. In order to provide a complementary study we calculated the production cross section of the Z_H boson in pp collisions at Large Hadron Collider with a center of mass energy of 14 TeV. By using the integrated luminosity projected for the Large Hadron Collider in the last stage of operation, we estimated the number of events for this process. Moreover, we analyze the SM background for the Higgs-photon associated production and found that the pp→ Z_H X → γH production is above the SM background.

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• Heavy neutral scalar decays into electroweak gauge bosons in the Littlest Higgs Model

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