Extremely long-lived charged massive particles as a probe for reheating of the Universe
Extremely long-lived charged massive particles as a probe for reheating of the Universe
复制标题
寿命极长的带电大质量粒子作为宇宙再加热的探针
DOI:
10.1103/physrevd.77.116003
复制
发表时间:
2007
影响因子:
5
通讯作者:
F. Takayama
中科院分区:
文献类型:
--
作者:
F. Takayama
We discuss the impact of charged massive particle big bang
nucleosynthesis(CBBN) to explore the nature of the reheating of the Universe in
the case that a new extremely long-lived charged massive particle(CHAMP)
exists. If the mass of the CHAMP is within collider reach and it's lifetime is
longer than $10^4$sec, the comparison between the CBBN prediction and observed
$^6$Li abundances may indicate nonstandard reheating in the early Universe
without relying on details of the decay properties. Even if the CHAMP mass is
outside the reach of colliders, the cosmological considerations may provide a
nontrivial hint for the existence of such very heavy long-lived CHAMPs from the
late Universe if the daughter particles are the dominant component of the
present dark matter. We consider a low reheating temperature model as an
example of the nonstandard reheating scenarios.
影响因子:
6.4
作者:
F. Steffen
通讯作者:
F. Steffen
影响因子:
5
作者:
K. Hamaguchi;Y. Kuno;T. Nakaya;M. Nojiri
通讯作者:
K. Hamaguchi;Y. Kuno;T. Nakaya;M. Nojiri
DOI:
--
发表时间:
2004
期刊:
Phys. Lett. B 588
影响因子:
--
作者:
T.;Sakai;S.;Sugimoto;M.Ibe;M.Kawasaki;S.Kaneko;T.Higaki;M.Frigerio;M. Bando;M. Bando;W. Buchmuller
通讯作者:
W. Buchmuller