2026-06-29T08:09:24Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1006172025-09-02T14:39:37Zcom_20.500.14352_14col_20.500.14352_15

Electroweak resummation of neutralino dark-matter annihilation into high-energy photons Beneke, Martin Lederer, Stefan Peset Martín, Clara María 53 Resummation Models for dark matter Supersymmetry Física (Física) 22 Física We consider the resummation of large electroweak Sudakov logarithms for the annihilation of neutralino DM with (TeV) mass to high-energy photons in the minimal supersymmetric standard model, extending previous work on the minimal wino and Higgsino models. We find that NLL resummation reduces the yield of photons by about 20% for Higgsino-dominated DM at masses around 1 TeV, and up to 45% for neutralinos with larger wino admixture at heavier masses near 3 TeV. This sizable effect is relevant when observations or exclusion limits are translated into MSSM parameter-space constraints. Deutsche Forschungsgemeinschaft Ministerio de Ciencia e Innovación (España) Depto. de Física Teórica Fac. de Ciencias Físicas Instituto de Física de Partículas y del Cosmos (IPARCOS) TRUE pub 2024-02-08T18:44:47Z 2024-02-08T18:44:47Z 2023 journal article VoR https://hdl.handle.net/20.500.14352/100617 1126-6708 10.1007/JHEP01(2023)171 1029-8479 eng info:eu-repo/grantAgreement/SFB1258 info:eu-repo/grantAgreement/PID2019-106080GB-C21 Beneke, M., Lederer, S. & Peset, C. Electroweak resummation of neutralino dark-matter annihilation into high-energy photons. J. High Energ. Phys. 2023, 171 (2023). https://doi.org/10.1007/JHEP01(2023)171 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ open access application/pdf Springer Link