Co-scattering in micrOMEGAs: a case study for the singlet-triplet dark matter model

Autor: Gaël Alguero, Geneviève Bélanger, Sabine Kraml, Alexander Pukhov

In scenarios with very small dark matter (DM) couplings and small mass splittings between the DM and other dark sector particles, so-called "co-scattering" or "conversion-driven freeze-out" can be the dominant mechanism for DM production. We present

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec8311276c24fad38d10e9023d0f9b9c
https://hal.science/hal-03772805

Higgs Boson Emerging from the Dark

Autor: Honghao Zhang, Giacomo Cacciapaglia, Martin Rosenlyst, Chengfeng Cai, Mads T. Frandsen

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2020, 125 (2), pp.021801. ⟨10.1103/PhysRevLett.125.021801⟩
Cai, C, Zhang, H H, Cacciapaglia, G, Rosenlyst, M & Frandsen, M T 2020, ' Higgs Boson Emerging from the Dark ', Physical Review Letters, vol. 125, no. 2, 021801 . https://doi.org/10.1103/PhysRevLett.125.021801

We propose a new non-thermal mechanism of dark matter production based on vacuum misalignment. A global $X$-charge asymmetry is generated at high temperatures, under which both the will-be Higgs and the dark matter are charged. At lower energies, the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27fb6bebcf77b800c7b680aa4911a96f
https://doi.org/10.1103/physrevlett.125.021801

Dark matter bound state formation via emission of a charged scalar

Autor: Kalliopi Petraki, Ruben Oncala

Publikováno v: Journal of High Energy Physics
Journal of High Energy Physics, Springer, 2020, 02, pp.036. ⟨10.1007/JHEP02(2020)036⟩
Journal of High Energy Physics, Vol 2020, Iss 2, Pp 1-40 (2020)
JHEP
JHEP, 2020, 02, pp.036. ⟨10.1007/JHEP02(2020)036⟩

The formation of stable or meta-stable bound states can dramatically affect the phenomenology of dark matter (DM). Although the capture into bound states via emission of a vector is known to be significant, the capture via scalar emission suffers fro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38d5edc1cc8d212aa7a0139cffa830a0
https://hal.archives-ouvertes.fr/hal-02394744

Spontaneous Freeze Out of Dark Matter

Autor: Hervé Partouche, Lucien Heurtier, Thibaut Coudarchet

Publikováno v: 19th Hellenic School and Workshops on Elementary Particle Physics and Gravity
19th Hellenic School and Workshops on Elementary Particle Physics and Gravity, Aug 2019, Corfu, Greece
PoS
19th Hellenic School and Workshops on Elementary Particle Physics and Gravity, Aug 2019, Corfu, Greece. pp.136, ⟨10.22323/1.376.0136⟩

We present a new paradigm for the production of dark-matter particles called the spontaneous freeze out, in which the decoupling from the thermal bath is enforced by the sudden increase of the dark-matter mass, due to the spontaneous breaking of some

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8e51f799131ef82a17677e42dc75b5a
https://hal.archives-ouvertes.fr/hal-02458698

SUSY-QCD corrected and Sommerfeld enhanced stau annihilation into heavy quarks with scheme and scale uncertainties

Autor: Michael Klasen, B. Herrmann, J. Harz, K. Kovařík, Saskia Schmiemann, J. Branahl

Publikováno v: Phys.Rev.D
Phys.Rev.D, 2019, 100 (11), pp.115003. ⟨10.1103/PhysRevD.100.115003⟩
Physical Review
Physical Review D
Physical Review D, American Physical Society, 2019, 100 (11), pp.115003. ⟨10.1103/PhysRevD.100.115003⟩

We investigate stau-antistau annihilation into heavy quarks in the phenomenological Minimal Supersymmetric Standard Model within the DM@NLO project. We present the calculation of the corresponding cross section including corrections up to $\mathcal{O

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73ad30e74fa3ba01a7abeb5e09fa8162
https://hal.archives-ouvertes.fr/hal-02338421