Lectures on physics beyond the Standard Model

Lee, Hyun Min

doi:10.1007/s40042-021-00188-x

Cited by 9 publications

(11 citation statements)

References 143 publications

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“…matter, the 3 → 2 annihilation processes can account for the freeze-out for Strongly Interacting Massive Particles (SIMPs) [27][28][29][30][31][32][33]. Due to the triple interaction for dark matter in our model, a 3 → 2 semi-annihilation channel for dark matter,…”

Section: → 2 Semi-annihilationsmentioning

confidence: 98%

“…For φ 1 φ 1 φ * 1 → φ 1 φ 2 , in the limit of vanishing velocities for dark matter, the 3 → 2 semi-annihilation cross section at tree level [31] is given by…”

Section: → 2 Semi-annihilationsmentioning

confidence: 99%

“…For light dark matter below sub-GeV scale, those higher order annihilation channels become relevant [27][28][29][30][31][32][33]. In this case, such a sub-GeV dark matter can have a large self-interaction at the perturbative level.…”

Section: Thermal Relics From Self-resonant Dark Mattermentioning

confidence: 99%

“…Consequently, in terms of the abundances, Y i ≡ n i /s, with s being the entropy density, and making a change of variables from time to x = m 1 /T , and parametrizing the averaged annihilation cross sections by recast the above Boltzmann equations [31] into…”

Section: Boltzmann Equations and Dark Matter Relic Abundancesmentioning

confidence: 99%

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Models for Self-resonant Dark Matter

Kim,

Lee,

Zhu

2022

Preprint

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We consider a new mechanism for enhancing the self-scattering and annihilation cross sections for dark matter with multiple components but without a light mediator. The lighter dark matter component plays a role of the u-channel pole in the elastic coscattering for dark matter, leading to a large self-scattering cross section and a Sommerfeld enhancement for semi-annihilation processes. Taking the effective theory approach for self-resonant dark matter, we present various combinations of multiple dark matter components with spins and parities, showing a u-channel pole in the co-scattering processes. Adopting dark photon and dark Higgs portals for self-resonant dark matter, we impose the relic density condition as well as indirect detection bounds on semiannihilation channels with a Sommerfeld enhancement and discuss potential signals for direct detection experiments.

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Section: → 2 Semi-annihilationsmentioning

confidence: 98%

“…For φ 1 φ 1 φ * 1 → φ 1 φ 2 , in the limit of vanishing velocities for dark matter, the 3 → 2 semi-annihilation cross section at tree level [31] is given by…”

Section: → 2 Semi-annihilationsmentioning

confidence: 99%

Section: Thermal Relics From Self-resonant Dark Mattermentioning

confidence: 99%

Section: Boltzmann Equations and Dark Matter Relic Abundancesmentioning

confidence: 99%

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Models for Self-resonant Dark Matter

Kim,

Lee,

Zhu

2022

Preprint

Self Cite

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“…The experiment are still on going to confirm all properties predicted by standard model. (Lee, 2019) Theoretical problems a. Mass problem: As we know the standard model generate the idea of particle mass through a process called spontaneous symmetry breaking.…”

Section: Theoretical Predictionsmentioning

confidence: 99%

Problems of Standard Model, Review

Paudel

2021

BMC J. Sc. Res.

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It is assumed that standard model is the most successful theory of particle physics but it is not perfect. In this paper, I am interested to flash the published results of various proposals of theoretical physicists in various modes of Standard Model and beyond. There are no specifications theory to declare new model to till date, although some ideas that would modify the standard model in many ways helps to understand the existing results.

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Models for self-resonant dark matter

Kim

Lee

Zhu

2022

J. High Energ. Phys.

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We consider a new mechanism for enhancing the self-scattering and annihilation cross sections for dark matter with multiple components but without a light mediator. The lighter dark matter component plays a role of the u-channel pole in the elastic co-scattering for dark matter, leading to a large self-scattering cross section and a Sommerfeld enhancement for semi-annihilation processes. Taking the effective theory approach for self-resonant dark matter, we present various combinations of multiple dark matter components with spins and parities, showing a u-channel pole in the co-scattering processes. Adopting dark photon and dark Higgs portals for self-resonant dark matter, we impose the relic density condition as well as indirect detection bounds on semi-annihilation channels with a Sommerfeld enhancement and discuss potential signals for direct detection experiments.

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Lectures on physics beyond the Standard Model

Abstract: We give a brief overview on the successes and theoretical problems of the Standard Model (SM) and discuss TeV-scale supersymmetry and some of recent proposals for physics beyond the SM and dark matter physics.

Cited by 9 publications

References 143 publications

Models for Self-resonant Dark Matter

Models for Self-resonant Dark Matter

Problems of Standard Model, Review

Models for self-resonant dark matter

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