TY - JOUR
T1 - Scalar dark matter in the conformally invariant extension of the standard model
AU - Jung, Dong Won
AU - Lee, Jungil
AU - Nam, Soo hyeon
N1 - Funding Information:
This work was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning under the Grant No. NRF-2017R1E1A1A01074699 , and funded by the Ministry of Education under the Grant Nos. NRF-2016R1A6A3A11932830 (S.-h. Nam) and NRF-2018R1D1A1B07047812 (D.-W. Jung).
Publisher Copyright:
© 2019 The Author(s)
PY - 2019/10/10
Y1 - 2019/10/10
N2 - We study a classically scale-invariant model with an electroweak singlet scalar mediator together with a scalar dark matter multiplet of global O(N) symmetry. Our most general conformally invariant scalar potential generates the electroweak symmetry breaking via the Coleman-Weinberg mechanism, and the new scalar singlet acquires its mass through radiative corrections of the SM particles and the scalar dark matter. Taking into account the collider bounds, we present the allowed region of new physics parameters satisfying the recent measurement of relic abundance. With the obtained parameter sets, we predict the elastic scattering cross section of the new scalar multiplet into target nuclei for a direct detection of the dark matter. We also perform a full analysis with arbitrary set of parameters for N≥2, and discuss the implication of the constraints from the on-going direct and indirect detections of dark matter.
AB - We study a classically scale-invariant model with an electroweak singlet scalar mediator together with a scalar dark matter multiplet of global O(N) symmetry. Our most general conformally invariant scalar potential generates the electroweak symmetry breaking via the Coleman-Weinberg mechanism, and the new scalar singlet acquires its mass through radiative corrections of the SM particles and the scalar dark matter. Taking into account the collider bounds, we present the allowed region of new physics parameters satisfying the recent measurement of relic abundance. With the obtained parameter sets, we predict the elastic scattering cross section of the new scalar multiplet into target nuclei for a direct detection of the dark matter. We also perform a full analysis with arbitrary set of parameters for N≥2, and discuss the implication of the constraints from the on-going direct and indirect detections of dark matter.
UR - http://www.scopus.com/inward/record.url?scp=85070249569&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2019.134823
DO - 10.1016/j.physletb.2019.134823
M3 - Article
AN - SCOPUS:85070249569
SN - 0370-2693
VL - 797
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 134823
ER -