SCOAP3 Repository 14 records found  1 - 10nextSearch took 0.02 seconds. 
1. Scrutinizing right-handed neutrino portal dark matter with Yukawa effect / Bandyopadhyay, Priyotosh ; Chun, Eung Jin ; Mandal, Rusa ; Queiroz, Farinaldo S.
Analyzing the neutrino Yukawa effect in the freeze-out process of a generic dark matter candidate with right-handed neutrino portal, we identify the parameter regions satisfying the observed dark matter relic density as well as the current Fermi-LAT and H.E.S.S. [...]
Published in Physics letters B 788 (2019) 530-534 10.1016/j.physletb.2018.12.003
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2. Reconstructing heavy Higgs boson masses in a type X two-Higgs-doublet model with a light pseudoscalar particle / Chun, Eung Jin ; Dwivedi, Siddharth ; Mondal, Tanmoy ; Mukhopadhyaya, Biswarup ; et al
We analyze the prospects of reconstructing the mass of a heavy charged Higgs boson in the context of a type X two-Higgs-doublet model where a light pseudoscalar A in the mass range 40–60 GeV is phenomenologically allowed, and is in fact favored if one wants to explain the muon anomalous magnetic moment. [...]
Published in Physical Review D 98 (2018) 10.1103/PhysRevD.98.075008 arXiv:1807.05379
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3. Scalar dark matter in leptophilic two-Higgs-doublet model / Bandyopadhyay, Priyotosh ; Chun, Eung Jin ; Mandal, Rusa
Two-Higgs-Doublet Model of Type-X in the large tan⁡β limit becomes leptophilic to allow a light pseudo-scalar A and thus provides an explanation of the muon g−2 anomaly. [...]
Published in Physics letters B (2018) 10.1016/j.physletb.2018.01.071
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4. Implications of right-handed neutrinos in BL extended standard model with scalar dark matter / Bandyopadhyay, Priyotosh ; Chun, Eung Jin ; Mandal, Rusa
We investigate the standard model (SM) with a U(1)BL gauge extension where a BL charged scalar is a viable dark matter (DM) candidate. [...]
Published in Phys. Rev. D 97 (2018) 10.1103/PhysRevD.97.015001 arXiv:1707.00874
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5. Accidental Peccei–Quinn symmetry from discrete flavour symmetry and Pati–Salam / Björkeroth, Fredrik ; Chun, Eung Jin ; King, Stephen F.
We show how an accidental U(1) Peccei–Quinn (PQ) symmetry can arise from a discrete A4 family symmetry combined with a discrete flavour symmetry Z3×Z52 , in a realistic Pati–Salam unified theory of flavour. [...]
Published in Physics letters B (2017) 10.1016/j.physletb.2017.12.058
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6. Reconstructing a light pseudoscalar in the Type-X two Higgs doublet model / Chun, Eung Jin ; Dwivedi, Siddharth ; Mondal, Tanmoy ; Mukhopadhyaya, Biswarup
We investigate the detectability as well as reconstructibility of a light pseudoscalar particle A , of mass in the 50–60 GeV range, which is still allowed in a Type-X (lepton-specific) two-Higgs doublet scenario. [...]
Published in Physics letters B (2017) 10.1016/j.physletb.2017.09.037
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7. Minimal models for axion and neutrino / Ahn, Y.H. ; Chun, Eung Jin
The PQ mechanism resolving the strong CP problem and the seesaw mechanism explaining the smallness of neutrino masses may be related in a way that the PQ symmetry breaking scale and the seesaw scale arise from a common origin. [...]
Published in Physics letters B (2015) 10.1016/j.physletb.2015.11.067
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8. Electro-Weak Dark Matter: Non-perturbative effect confronting indirect detections / Chun, Eung Jin ; Park, Jong-Chul
We update indirect constraints on Electro-Weak Dark Matter (EWDM) considering the Sommerfeld–Ramsauer–Townsend (SRT) effect for its annihilations into a pair of standard model gauge bosons assuming that EWDM accounts for the observed dark matter (DM) relic density for a given DM mass and mass gaps among the multiplet components. [...]
Published in Physics letters B (2015) 10.1016/j.physletb.2015.09.046
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9. Diluting the inflationary axion fluctuation by a stronger QCD in the early Universe / Choi, Kiwoon ; Chun, Eung Jin ; Im, Sang Hui ; Jeong, Kwang Sik
We propose a new mechanism to suppress the axion isocurvature perturbation, while producing the right amount of axion dark matter, within the framework of supersymmetric axion models with the axion scale induced by supersymmetry breaking. [...]
Published in Physics letters B (2015) 10.1016/j.physletb.2015.08.041
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10. Anatomy of Higgs mass in supersymmetric inverse seesaw models / Chun, Eung Jin ; Mummidi, V. Suryanarayana ; Vempati, Sudhir K.
We compute the one loop corrections to the CP-even Higgs mass matrix in the supersymmetric inverse seesaw model to single out the different cases where the radiative corrections from the neutrino sector could become important. [...]
Published in Physics letters B 736 (2014) 470-477 10.1016/j.physletb.2014.08.002
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