TY - JOUR
T1 - Precision studies of the Higgs boson decay channel H→ZZ→4ℓ with MEKD
AU - Avery, Paul
AU - Bourilkov, Dimitri
AU - Chen, Mingshui
AU - Cheng, Tongguang
AU - Drozdetskiy, Alexey
AU - Gainer, James S.
AU - Korytov, Andrey
AU - Matchev, Konstantin T.
AU - Milenovic, Predrag
AU - Mitselmakher, Guenakh
AU - Park, Myeonghun
AU - Rinkevicius, Aurelijus
AU - Snowball, Matthew
PY - 2013/3/8
Y1 - 2013/3/8
N2 - 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 4μ 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.
AB - 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 4μ 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.
UR - https://www.scopus.com/pages/publications/84875194147
U2 - 10.1103/PhysRevD.87.055006
DO - 10.1103/PhysRevD.87.055006
M3 - 文章
AN - SCOPUS:84875194147
SN - 1550-7998
VL - 87
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 5
M1 - 055006
ER -