Conveners
Monday - Session 3
- Gramos Qerimi (TUM)
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Ayuki Kamada (University of Warsaw)3/18/24, 1:35 PM1. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
A long-range force between dark matter particles makes significant impacts on dark matter phenomenology.
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It enhances the annihilation cross section at the late Universe (Sommerfeld enhancement), which affects the prospects for detecting annihilation products (indirect detection experiments).
It also leads to a large self-scattering cross section, which forms a significant core in dark matter... -
Lorenzo De Ros3/18/24, 2:05 PM1. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
We examine the Sommerfeld enhancement in dark matter pair annihilation, scrutinizing p- and higher ℓ-wave annihilations. We focus on the Yukawa potential, noting unexpected velocity scaling and resonant behavior, attributed to the presence of quasi-bound states. We provide a quantum mechanical explanation for the phenomenon and for its features using the WKB approximation. We examine the...
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Stefan Lederer (Technische Universität München)3/18/24, 2:25 PM1. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
We consider the resummation of large electroweak Sudakov logarithms for the annihilation of neutralino DM with $\mathcal{O}$(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...
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Prof. Matthew Baumgart (Arizona State University)3/18/24, 2:50 PM1. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
The idea that dark matter is nothing more than a “heavy neutrino” that froze out after reheating has long been a seductive one. Indirect detection experiments are just now entering an era where the simplest candidate thermal relic models can be excluded. We will survey the status of current & near-future observations of the galactic center and dwarf spheroidal galaxies to rule on...
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