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Measuring properties of a Heavy Higgs boson in the $H o ZZ o 4ell$ decay | | Jung Chang
; Kingman Cheung
; Jae Sik Lee
; Chih-Ting Lu
; Jubin Park
; | | Date: |
18 Aug 2017 | | Abstract: | In many extensions of the standard model, there exist a few extra Higgs
bosons. Suppose a heavy neutral Higgs boson $H$ is discovered at the LHC, one
could then investigate CP and CPT~ properties of its couplings to a pair of Z
bosons through $H o ZZ o 4ell$. We use the helicity-amplitude method to
write down the most general form for the angular distributions of the four
final-state leptons, which can cover the case of CP-even, -odd, and -mixed
state for the Higgs boson. We figure out there are 9 types of angular
observables and all the H couplings to Z bosons can be fully determined by
exploiting them. A Higgs-boson mass of 260 GeV below the tar{t} threshold is
illustrated with full details. With a total of $10^4$ events of $H o ZZ o
4ell$, one can determine the couplings up to 10\% uncertainties. | | Source: | arXiv, 1708.5583 | | Services: | Forum | Review | PDF | Favorites | |
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