2021/02/08 by Mikuru Nagayama, Nagayama, Mikuru, Joe Sato +5
Computer Science · Engineering · Physics and Astronomy · #CCD and CMOS Imaging Sensors #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Quantum Information and Cryptography #astro-ph.HE #hep-ex #hep-ph
paper · pdf · doi:10.48550/arxiv.2102.04128
30 pages, 11 figures
arxiv created 2021/02/08 · openalex publication_date 2021/02/08 · arxiv updated 2021/02/09 · openalex created_date 2021/02/15 · openalex updated_date 2026/07/28
We have investigated neutralino dark matter in the framework of minimal supersymmetric Standard Model focusing on the coannihilatioin region. In this region, where the particle whose mass is tightly degenerated with the neutralino dark matter exists, we can solve the Lithium problem in the case of lepton flavor being violated. It turns out that Sommerfeld enhancement is important in the coannihilation region so that the dark matter signal becomes large enough to be observed by the current sensitivity of indirect experiments.