https://doi.org/10.1140/epjc/s10052-016-4052-6
Regular Article - Theoretical Physics
Interpretation of 750 GeV diphoton excess at LHC in singlet extension of color-octet neutrino mass model
1
Center for High Energy Physics, Peking University, Beijing, 100871, China
2
School of Physics, Nankai University, Tianjin, 300071, China
3
State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, China
* e-mail: liaoy@nankai.edu.cn
Received:
25
January
2016
Accepted:
30
March
2016
Published online:
15
April
2016
We propose that the possible 750 GeVdiphoton excess can be explained in the color-octet neutrino mass model extended with a scalar singlet 
. The model generally contains 
species of color-octet, electroweak doublet scalars S and 
species of color-octet, electroweak triplet 
or singlet 
fermions. While both scalars and fermions contribute to the production of through gluon fusion, only the charged members induce the diphoton decay of . The diphoton rate can be significantly enhanced due to interference between the scalar and fermion loops. We show that the diphoton cross section can be from 3 to 10 fb for 
color-octet particles while evading all current LHC limits.
© The Author(s), 2016
