Conveners
Monday - Session 4
- Peter Vander Griend (University of Kentucky and Fermilab)
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Simone Biondini18/03/2024, 15:551. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
The evidence for dark matter is perhaps of the strongest call for new physics. On top of being desirable from the phenomenological and observational points of views, the possibility of a richer dark sector, that comprises more than one particle, is fairly common in many DM models. The dark particles can enjoy their own hidden forces, which are far less constrained than the interactions between...
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Gramos Qerimi (TUM)18/03/2024, 16:301. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
For a quantitative investigation on the time evolution of heavy thermal dark matter at and after thermal freeze-out, near-threshold processes need to be taken into account which have a large impact on the observed dark matter relic abundance. We study the recoil effect of heavy dark matter pairs in a thermal bath and compute the thermal rates of dark matter fermion-antifermion pairs in the...
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Benoit Assi (U Hamburg)18/03/2024, 16:551. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
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Andrii Dashko (DESY Theory)18/03/2024, 17:151. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
In this work, we address the impact of the thermal Debye mass 𝑚𝐷 scale on the bound-state formation and ionization (dissociation) in the dark sector in the Early Universe. We focus on heavy dark fermions (with mass 𝑚) charged under a 𝑈(1)𝑑 group coupling dark matter to dark photons and dark light fermions with the coupling constant 𝛼=𝑔2/4𝜋. We determine the effect of the HTL resummation on the...
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Julian Bollig (Albert-Ludwigs-Universität Freiburg)18/03/2024, 17:351. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
Indirect detection is one of the most powerful methods to search for annihilating dark matter. In this work, we investigate the impact of non-perturbative effects in the indirect detection of dark matter. For this purpose we utilize a minimal model consisting of a fermionic dark matter candidate in the TeV mass range that interacts via scalar- and pseudo-scalar interactions with a massive...
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Gramos Qerimi (TUM)1. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
For a quantitative investigation on the time evolution of heavy thermal dark matter at and after thermal freeze-out, near-threshold processes need to be taken into account which have a large impact on the observed dark matter relic abundance. We study the recoil effect of heavy dark matter pairs in a thermal bath and compute the thermal rates of dark matter fermion-antifermion pairs in the...
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Andrii Dashko (DESY Theory)1. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
In this work, we address the impact of the thermal Debye mass $m_D$ scale on the bound-state formation and ionization (dissociation) in the dark sector in the Early Universe. We focus on heavy dark fermions (with mass $m$) charged under a $U(1)_d$ group coupling dark matter to dark photons and dark light fermions with the coupling constant $\alpha = g^2/4\pi$. We determine the effect of the...
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Julian Bollig (Albert-Ludwigs-Universität Freiburg)1. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
Indirect detection is one of the most powerful methods to search for annihilating dark matter. In this work, we investigate the impact of non-perturbative effects in the indirect detection of dark matter. For this purpose we utilize a minimal model consisting of a fermionic dark matter candidate in the TeV mass range that interacts via scalar- and pseudo-scalar interactions with a massive...
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Dr Assi Benoit (FNAL)1. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
We present a generalization of the pNRQCD framework to multi-hadron systems, focusing on the regimes of binding for heavy di-quarkonium and di-baryon states in general. Employing advanced Quantum Monte-Carlo methods, we investigate these complex bound states’ binding and implications as potential dark matter candidates. Our methods aim to eventually illuminate their role in the dark matter...
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Simone Biondini1. Perturbative regime: Effective field theories and precision calculations for Quarkonia and Dark Matter
The evidence for dark matter is perhaps of the strongest call for new physics. On top of being desirable from the phenomenological and observational points of views, the possibility of a richer dark sector, that comprises more than one particle, is fairly common in many DM models. The dark particles can enjoy their own hidden forces, which are far less constrained than the interactions...
Go to contribution page