期刊
PHYSICAL REVIEW D
卷 87, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.87.055006
关键词
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资金
- NSF [1066293, 1007115]
- CERN-Korea fellowship through the National Research Foundation of Korea
- U.S. Department of Energy [DE-FG02-97ER41029]
- Office of Advanced Cyberinfrastructure (OAC)
- Direct For Computer & Info Scie & Enginr [1007115] Funding Source: National Science Foundation
The importance of the H -> ZZ -> 4l golden'' channel was shown by its major role in the discovery, by the ATLAS and CMS collaborations, of a Higgs-like boson with mass near 125 GeV. We analyze the discrimination power of the matrix element method both for separating the signal from the irreducible ZZ background and for distinguishing various spin and parity hypotheses describing a signal in this channel. We show that the proper treatment of interference effects associated with permutations of identical leptons in the 4e and 4 mu final states plays an important role in achieving the best sensitivity in measuring the properties of the newly discovered boson. We provide a code, MEKD, that calculates kinematic discriminants based on the full leading-order matrix elements and which will aid experimentalists and phenomenologists in their continuing studies of the H -> ZZ -> 4l channel. DOI: 10.1103/PhysRevD.87.055006
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