TY - JOUR
T1 - On-shell interference effects in Higgs boson final states
AU - Englert, Christoph
AU - Low, Ian
AU - Spannowsky, Michael
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/4/29
Y1 - 2015/4/29
N2 - Top quark loops in Higgs production via gluon fusion at large invariant final state masses can induce important interference effects in searches for additional Higgs bosons as predicted in, e.g., Higgs portal scenarios and the minimal supersymmetric Standard Model when the heavy scalar is broad or the final state resolution is poor. Currently, the limit setting as performed by both ATLAS and CMS is based on injecting a heavy Higgs-like signal neglecting interference effects. In this paper, we perform a study of such "on-shell" interference effects in pp→ZZ and find that they lead to a O(30%) width scheme-dependent modification of the signal strength. Including the continuum contributions to obtain, e.g., the full pp→ZZ→4 final state, this modification is reduced to the 10% level in the considered intermediate mass range.
AB - Top quark loops in Higgs production via gluon fusion at large invariant final state masses can induce important interference effects in searches for additional Higgs bosons as predicted in, e.g., Higgs portal scenarios and the minimal supersymmetric Standard Model when the heavy scalar is broad or the final state resolution is poor. Currently, the limit setting as performed by both ATLAS and CMS is based on injecting a heavy Higgs-like signal neglecting interference effects. In this paper, we perform a study of such "on-shell" interference effects in pp→ZZ and find that they lead to a O(30%) width scheme-dependent modification of the signal strength. Including the continuum contributions to obtain, e.g., the full pp→ZZ→4 final state, this modification is reduced to the 10% level in the considered intermediate mass range.
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U2 - 10.1103/PhysRevD.91.074029
DO - 10.1103/PhysRevD.91.074029
M3 - Article
AN - SCOPUS:84929103313
SN - 1550-7998
VL - 91
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 7
M1 - 074029
ER -