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

Abstract

We study the heavy neutral scalar decays into standard model electroweak gauge bosons in the context of the Littlest Higgs model. We focus our attention on the ${\Phi }^0\to WW,\gamma V$ processes induced at the one-loop level, with $V=\gamma ,Z$. Since the branching ratios of the ${\Phi }^0\to \gamma V$ decays result very suppressed, only the ${\Phi }^0\to WW$ process is analyzed in the framework of possible experimental scenarios by using heavy scalar masses between 1.6 TeV until 3.3 TeV. The branching ratio for the ${\Phi }^0\to WW$ decay is of the order of $10^{-3}$ throughout the interval 2 TeV $<f<$ 4 TeV, which represent the global symmetry breaking scale of the theory. Thus, it is estimated the associated production cross section for the $pp\to {\Phi }^{0}X\to WW$, finding around ten events for $m_{{\Phi }^0}\approx 1.6$ TeV at best.

12 pages and 8 figures. arXiv admin note: text overlap with arXiv:1501.04988

References in corpus (9)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Parton distributions for the LHC
• Search for massive resonances in dijet systems containing jets tagged as W or Z boson decays in pp collisions at sqrt(s) = 8 TeV
• Search for resonances in diphoton events at $\sqrt{s}$=13 TeV with the ATLAS detector
• Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at sqrt(s) = 8 TeV
• Search for resonant production of high-mass photon pairs in proton-proton collisions at sqrt(s) = 8 and 13 TeV
• Can the 125 GeV Higgs be the Little Higgs?
• Hidden particle production at the ILC

Cited by in corpus (1)

• Phenomenological implications of the new Littlest Higgs model with T-parity