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CERN Document Server 37 notices trouvées  1 - 10suivantfin  aller vers la notice: La recherche a duré 0.59 secondes. 
1.
Nonthermal Heavy Dark Matter from a First-Order Phase Transition / Giudice, Gian F. ; Lee, Hyun Min ; Pomarol, Alex ; Shakya, Bibhushan
We study nonthermal production of heavy dark matter from the dynamics of the background scalar field during a first-order phase transition, predominantly from bubble collisions. [...]
arXiv:2403.03252 ; CERN-TH-2024-031 ; DESY-24-031.
- 41 p.
Fulltext
2.
Peccei-Quinn Inflation at the Pole and Axion Kinetic Misalignment / Lee, Hyun Min (Chung-Ang U.) ; Menkara, Adriana G. (Chung-Ang U. ; CERN) ; Seong, Myeong-Jung (Chung-Ang U.) ; Song, Jun-Ho (Chung-Ang U.)
We propose a minimal extension of the Standard Model with the Peccei-Quinn (PQ) scalar field and explain the relic density of the QCD axion through the kinetic misalignment with a relatively small axion decay constant. To this purpose, we consider a slow-roll inflation from the radial component of the PQ field with the PQ conserving potential near the pole of its kinetic term and investigate the post-inflationary dynamics of the PQ field for reheating. [...]
arXiv:2310.17710.- 2024-05-27 - 28 p. - Published in : JHEP 2405 (2024) 295 Fulltext: 2310.17710 - PDF; document - PDF;
3.
Exothermic Dark Matter for XENON1T Excess / Lee, Hyun Min (Chung-Ang U. ; CERN)
Motivated by the recent excess in the electron recoil from XENON1T experiment, we consider the possibility of exothermic dark matter, which is composed of two states with mass splitting. The heavier state down-scatters off the electron into the lighter state, making an appropriate recoil energy required for the Xenon excess even for the standard Maxwellian velocity distribution of dark matter. [...]
arXiv:2006.13183; CERN-TH-2020-105; CERN-TH-2020-105.- 2021-01-05 - 22 p. - Published in : JHEP 2101 (2021) 019 Article from SCOAP3: PDF; Fulltext: PDF;
4.
The Clockwork Standard Model / Kang, Yoo-Jin (Chung-Ang U.) ; Kim, Soonbin (Chung-Ang U.) ; Lee, Hyun Min (Chung-Ang U. ; CERN)
We consider various bulk fields with general dilaton couplings in the linear dilaton background in five dimensions as the continuum limit of clockwork models. We show that the localization of the zero modes of bulk fields and the mass gap in the KK spectrum depend not only on the bulk dilaton coupling, but also on the bulk mass parameter in the case of a bulk fermion. [...]
arXiv:2006.03043.- 2020-09-01 - 35 p. - Published in : JHEP 2009 (2020) 005 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
5.
Effective theory for self-interacting dark matter and massive spin-2 mediators / Kang, Yoo-Jin (Chung-Ang U. ; CERN) ; Lee, Hyun Min (Chung-Ang U. ; CERN)
We consider the effective theory for self-interacting dark matter with arbitrary spin and go beyond the previous discussion in the literature by introducing a massive spin-2 particle as the mediator for the dark matter self-scattering. We present the effective self-interactions for dark matter in the leading order expansions with the momentum transfer and the dark matter velocity. [...]
arXiv:2003.09290.- 2021-03-24 - 31 p. - Published in : J. Phys. G 48 (2021) 045002 Fulltext: PDF;
6.
Connecting between inflation and dark matter in models with gauged Z$_{3}$ symmetry / Choi, Soo-Min (Chung-Ang U. ; CERN) ; Kim, Jinsu (Gottingen U.) ; Lee, Hyun Min (Chung-Ang U. ; CERN) ; Zhu, Bin (Chung-Ang U. ; Yantai U.)
We investigate the possibility of unifying the inflation and dark matter physics in the minimal model for a complex scalar dark matter with gauged $Z_3$ symmetry. The dark local $U(1)$ symmetry is broken spontaneously into the $Z_3$ symmetry by the dark Higgs mechanism. [...]
arXiv:2003.11823.- 2020-06-22 - 40 p. - Published in : JHEP 2006 (2020) 135 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from publisher: PDF;
7.
Dark matter self-interactions from spin-2 mediators / Kang, Yoo-Jin (Chung-Ang U. ; CERN) ; Lee, Hyun Min (Chung-Ang U. ; CERN)
We propose a new mechanism for rendering dark matter self-interacting in the presence of a massive spin-2 mediator. The derived Yukawa-type potential for dark matter is independent of the spins of dark matter in the leading order of the momentum expansion, so are the resulting non-perturbative effects for the dark matter self-scattering. [...]
arXiv:2002.12779.- 2021-10-05 - 19 p. - Published in : Eur. Phys. J. C 81 (2021) 868 Fulltext: 2002.12779 - PDF; document - PDF;
8.
Connecting between inflation and dark matter in models with gauged Z_3 symmetry / Lee, Hyun Min ; Choi, Soo-Min ; Kim, Jinsu ; Zhu, Bin
We investigate the possibility of unifying the inflation and dark matter physics in the minimal model for a complex scalar dark matter with gauged Z3 symmetry [...]
CERN-TH-2020-041.
- 2020. - 39.
9.
Beyond the Starobinsky model for inflation / Cheong, Dhong Yeon (Yonsei U.) ; Lee, Hyun Min (Chung-Ang U. ; CERN) ; Park, Seong Chan (Yonsei U.)
We single out the Starobinsky model and its extensions among generic $f(R)$ gravity as attractors at large field values for chaotic inflation. Treating a $R^3$ curvature term as a perturbation of the Starobinsky model, we impose the phenomenological bounds on the additional term satisfying the successful inflationary predictions. [...]
arXiv:2002.07981; YHEP-COS20-04; CAU-THEP-2020-02; CERN-TH-2020-022.- 2020-06-10 - 8 p. - Published in : Phys. Lett. B 805 (2020) 135453 Article from SCOAP3: PDF; Fulltext: PDF;
10.
Chaotic inflation with four-form couplings / Lee, Hyun Min (Chung-Ang U.)
We consider chaotic inflation models with a pseudo-scalar field containing the general couplings to the four-form flux. The four-form mixing with the pseudo-scalar field induces a quadratic potential for inflaton while the coexisting four-form mixing with graviton generates a non-minimal gravity coupling for inflaton. [...]
arXiv:1908.05475; CERN-TH-2019-228.- 2020-02-20 - 6 p. - Published in : Phys. Rev. D 101 (2020) 043523 Article from SCOAP3: PDF; Fulltext: PDF;

CERN Document Server : 37 notices trouvées   1 - 10suivantfin  aller vers la notice:
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