2011/04/30 by Yann Mambrini, Y. Mambrini
Computer Science · Physics and Astronomy · #CMB cold spot #Computational Physics and Python Applications #Cosmic microwave background #Dark Matter and Cosmic Phenomena #Dark matter #Gauge boson #Hypercharge #Kinetic energy #Mixing (physics) #Particle physics theoretical and experimental studies #Standard Model (mathematical formulation) #Weakly interacting massive particles #astro-ph.CO #astro-ph.HE #hep-ph
paper · pdf · doi:10.1088/1475-7516/2011/07/009
9 pages, 3 figures, final version to appear in JCAP
arxiv created 2011/06/27 · openalex publication_date 2011/07/05 · arxiv updated 2015/05/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Several constructions, of stringy origins or not, generate abelian gauge extensions of the Standard Model (SM). Even if the particles of the SM are not charged under this extra U '(1), one cannot avoid the presence of a kinetic mixing between U '(1) and the hypercharge U Y (1). In this work, we constraint drastically this kinetic mixing, taking into account the recent experimental data from accelerator physics, direct detection and indirect detection of dark matter. We show that the region respecting WMAP and experimental constraints is now very narrowed along the pole line where M Z D ≃ 2 m DM , Z D being the gauge boson associated to the extra U '(1).