TY - JOUR
T1 - ALP inflation and Big Bang on Earth
AU - Takahashi, Fuminobu
AU - Yin, Wen
N1 - Publisher Copyright:
© 2019, The Author(s).
PY - 2019/7/1
Y1 - 2019/7/1
N2 - We study a hilltop inflation model where an axion-like particle (ALP) plays the role of the inflaton. We find that, for a broad class of potentials, the decay constant and the mass at the potential minimum satisfy the relation, mϕ ∼ 10− 6f, to explain the CMB normalization. The ALP is necessarily coupled to the standard model particles for successful reheating. The ALP with the above relation can be searched at beam dump experiments, e.g., the SHiP experiment, if the inflation scale is sufficiently low. In this case, the ALP decays through the interactions that led to the reheating of the Universe. In other words, the Big Bang may be probed at ground-based experiments.
AB - We study a hilltop inflation model where an axion-like particle (ALP) plays the role of the inflaton. We find that, for a broad class of potentials, the decay constant and the mass at the potential minimum satisfy the relation, mϕ ∼ 10− 6f, to explain the CMB normalization. The ALP is necessarily coupled to the standard model particles for successful reheating. The ALP with the above relation can be searched at beam dump experiments, e.g., the SHiP experiment, if the inflation scale is sufficiently low. In this case, the ALP decays through the interactions that led to the reheating of the Universe. In other words, the Big Bang may be probed at ground-based experiments.
KW - Beyond Standard Model
KW - Cosmology of Theories beyond the SM
KW - Discrete Symmetries
KW - Thermal Field Theory
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U2 - 10.1007/JHEP07(2019)095
DO - 10.1007/JHEP07(2019)095
M3 - Article
AN - SCOPUS:85069483609
SN - 1029-8479
VL - 2019
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 7
M1 - 95
ER -