https://doi.org/10.1140/epjc/s10052-014-2990-4
Regular Article - Theoretical Physics
Phenomenology of an extended Higgs portal inflation model after Planck 2013
1
School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, 100871, China
2
Center for High Energy Physics, Peking University, Beijing, 100871, China
* e-mail: csli@pku.edu.cn
Received:
26
February
2014
Accepted:
19
July
2014
Published online:
7
August
2014
We consider an extended inflation model in the frame of Higgs portal model, assuming a nonminimal coupling of the scalar field to the gravity. Using the new data from Planck 
and other relevant astrophysical data, we obtain the relation between the nonminimal coupling 
and the self-coupling 
needed to drive the inflation, and find that this inflationary model is favored by the astrophysical data. Furthermore, we discuss the constraints on the model parameters from the experiments of particle physics, especially the recent Higgs data at the LHC.
© SIF and Springer-Verlag Berlin Heidelberg, 2014
