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750 GeV diphoton resonance and electric dipole moments

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Title
750 GeV diphoton resonance and electric dipole moments
Author(s)
Kiwoon Choi; Sang Hui Im; Hyungjin Kim; Doh Young Mo
Publication Date
2016-09
Journal
PHYSICS LETTERS B, v.760, no., pp.666 - 673
Publisher
ELSEVIER SCIENCE BV
Abstract
We examine the implication of the recently observed 750 GeV diphoton excess for the electric dipole moments of the neutron and electron. If the excess is due to a spin zero resonance which couples to photons and gluons through the loops of massive vector-like fermions, the resulting neutron electric dipole moment can be comparable to the present experimental bound if the CP-violating angle α in the underlying new physics is of O(10−1). An electron EDM comparable to the present bound can be achieved through a mixing between the 750 GeV resonance and the Standard Model Higgs boson, if the mixing angle itself for an approximately pseudoscalar resonance, or the mixing angle times the CP-violating angle α for an approximately scalar resonance, is of O(10−3). For the case that the 750 GeV resonance corresponds to a composite pseudo-Nambu–Goldstone boson formed by a QCD-like hypercolor dynamics confining at ΛHC, the resulting neutron EDM can be estimated with α∼(750 GeV/ΛHC)2θHC, where θHC is the hypercolor vacuum angle. ©2016 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3
URI
http://pr.ibs.re.kr/handle/8788114/2735
DOI
10.1016/j.physletb.2016.07.056
ISSN
0370-2693
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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