期刊
PHYSICAL REVIEW D
卷 91, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.91.035011
关键词
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资金
- World Premier International Research Center Initiative (WPI Initiative)
- MEXT, Japan
- U.S. Department of Energy [DE-SC0010296]
- Fermi Research Alliance [DE-AC02-07CH11359]
- U.S. Department of Energy (DOE) [DE-SC0010296] Funding Source: U.S. Department of Energy (DOE)
We extend the study of Higgs boson couplings in the golden gg -> H -> ZZ* -> 4l channel in two important respects. First, we demonstrate the importance of off-shell Higgs boson production (gg -> H -> ZZ* -> 4l) in determining which operators contribute to the HZZ vertex. Second, we include the five operators of lowest nontrivial dimension, including the Z(mu)Z(mu)square H and HZ(mu)square Z(mu) operators that are often neglected. We point out that the former operator can be severely constrained by the measurement of the off-shell H* -> ZZ rate and/or unitarity considerations. We provide analytic expressions for the off-peak cross sections in the presence of these five operators. On shell, the Z(mu)Z(mu)square H operator is indistinguishable from its Standard Model counterpart HZ(mu)Z(mu), while the HZ(mu)square Z(mu) operator can be probed, in particular, by the Z* invariant mass distribution.
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