TY - JOUR
T1 - CP violation in Higgs boson diphoton decay in models with vectorlike heavy fermions
AU - Voloshin, M. B.
PY - 2012/11/13
Y1 - 2012/11/13
N2 - The amplitude of the diphoton decay of the Higgs boson is considered in an extension of the Standard Model involving heavy vectorlike fermions, which was recently suggested in the literature in order to explain a possible enhancement of the h→γγ decay rate. It is pointed out that generally in such models the decay amplitude acquires a sizable CP-odd contribution from the complex phases in the mass matrix of the new heavy fermions. The resulting CP violation in the diphoton decay can be studied experimentally when both photons are converted into e +e - pairs by measuring the distribution over the angle between the planes of the pairs. Such measurement, if feasible, would be of great interest on its own, regardless of specific models.
AB - The amplitude of the diphoton decay of the Higgs boson is considered in an extension of the Standard Model involving heavy vectorlike fermions, which was recently suggested in the literature in order to explain a possible enhancement of the h→γγ decay rate. It is pointed out that generally in such models the decay amplitude acquires a sizable CP-odd contribution from the complex phases in the mass matrix of the new heavy fermions. The resulting CP violation in the diphoton decay can be studied experimentally when both photons are converted into e +e - pairs by measuring the distribution over the angle between the planes of the pairs. Such measurement, if feasible, would be of great interest on its own, regardless of specific models.
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U2 - 10.1103/PhysRevD.86.093016
DO - 10.1103/PhysRevD.86.093016
M3 - Article
AN - SCOPUS:84870187208
SN - 1550-7998
VL - 86
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 9
M1 - 093016
ER -