Lifetimes of light stringy states

被引:2
|
作者
Anastasopoulos, Pascal [1 ]
Niederwieser, Elias [1 ]
机构
[1] Univ Vienna, Dept Phys, Math Phys Grp, Boltzmanngasse 5, A-1090 Vienna, Austria
基金
奥地利科学基金会;
关键词
D-BRANES; ANOMALOUS U(1)S; DIMENSIONS; ORIENTIFOLDS; MILLIMETER; PROGRESS;
D O I
10.1016/j.nuclphysb.2022.115749
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
In this paper, we evaluate the lifetime of the light stringy states that emerge in intersecting D-brane realisations of the Standard Model. For concreteness, we focus on a light massive scalar decaying into two massless fermions. Given the present experimental lower bounds of the string scale, we extrapolate the lifetime as a function of the intersection angles to very small angles in order to have states with lifetimes of the order of the universe. That provides an alluring example of a massive, very weakly interacting field with a huge lifetime, proposing itself as a potential dark matter candidate. (c) 2022 The Author(s). Published by Elsevier B.V.
引用
收藏
页数:12
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