Composite solution to the EDGES anomaly
Composite solution to the EDGES anomaly
复制标题
EDGES异常的复合解决方案
DOI:
10.1103/physrevd.105.075020
复制
发表时间:
2022
影响因子:
5
通讯作者:
Ramani, Harikrishnan
中科院分区:
文献类型:
--
作者:
Mathur, Anubhav;Rajendran, Surjeet;Ramani, Harikrishnan
Subcomponent millicharged dark matter that cools baryons via Coulomb interactions has been invoked to explain the EDGES anomaly. However, this model is in severe tension with constraints from cosmology and stellar emissions. In this work, we consider the consequences of these millicharged particles existing in composite Q-balls. The relevant degrees of freedom at high temperature are minuscule elementary charges, which fuse at low temperatures to make up Q-balls of larger charge. These Q-balls serve as the degrees of freedom relevant in cooling the baryons sufficiently to account for the EDGES anomaly. In such a model, cosmology and stellar constraints (which involve high-temperature processes) apply only to the feebly interacting elementary charges and not to the Q-balls. This salvages a large range of parameter space for millicharged Q-balls that can explain the EDGES anomaly. It also opens up new parameter space for direct detection, albeit at low momentum transfers.
登录
查看更多内容
影响因子:
5
作者:
Lee, Nanoom;Ali-Haïmoud, Yacine
通讯作者:
Ali-Haïmoud, Yacine
影响因子:
5.4
作者:
Edward Hardy;R. Lasenby;J. March-Russell;S. West
通讯作者:
Edward Hardy;R. Lasenby;J. March-Russell;S. West
影响因子:
4.4
作者:
G. Krnjaic;K. Sigurdson
通讯作者:
G. Krnjaic;K. Sigurdson
影响因子:
5
作者:
R. Harnik;R. Plestid;M. Pospelov;H. Ramani
通讯作者:
R. Harnik;R. Plestid;M. Pospelov;H. Ramani
影响因子:
6.4
作者:
R. Lasenby
通讯作者:
R. Lasenby