Asset Details
Do you wish to reserve the book?
What if ALP dark matter for the XENON1T excess is the inflaton
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
What if ALP dark matter for the XENON1T excess is the inflaton
Do you wish to request the book?
What if ALP dark matter for the XENON1T excess is the inflaton
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
What if ALP dark matter for the XENON1T excess is the inflaton
2021
Overview
A
bstract
The recent XENON1T excess in the electron recoil data can be explained by anomaly-free axion-like particle (ALP) dark matter with mass
m
ϕ
= 2
.
3 ± 0
.
2 keV and the decay constant
f
ϕ
/
q
e
≃
2
×
10
10
Ω
ϕ
/
Ω
DM
GeV. Intriguingly, the suggested mass and decay constant are consistent with the relation,
f
ϕ
∼
10
3
m
ϕ
M
p
, predicted in a scenario where the ALP plays the role of the inflaton. This raises a possibility that the ALP dark matter responsible for the XENON1T excess also drove inflation in the very early universe. We study implications of the XENON1T excess for the ALP inflation and thermal history of the universe after inflation. We find that the successful reheating requires the ALP couplings to heavy fermions in the standard model, which results in an instantaneous reheating and subsequent thermalization of the ALPs. Then, an entropy dilution of
O
(10) is necessary to explain the XENON1T excess, which can be achieved by decays of the right-handed neutrinos.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V,SpringerOpen
