Yonsei University

output

19932026

most citedFirst M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole

4.3k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2006 · hep-phShow all

13 papers · 2 filters

hep-ph2006★ 18 cited

Bs-->K+K- and Bs-->K0 anti-K0 Decays within Supersymmetry

Seungwon Baek, David London, Joaquim Matias +1

We compute the supersymmetric (SUSY) contributions to the observables in Bs-->K+K- and Bs-->K0 anti-K0 decays. The hadronic parameters in the standard-model (SM) amplitudes are obt…

hep-ph2006

Electroweak Penguin and Leptophobic $Z^{'}$ model

S. Baek, J. H. Jeon, C. S. Kim +1

We consider the leptophobic $Z^{'}$ model which can appear naturally in the flipped SU(5) or string-inspired $E_{6}$ models. This model can be constrained by measurements of the $…

hep-ph2006★ 30 cited

$μ - τ$ Symmetry and Radiatively Generated Leptogenesis

Y. H. Ahn, Sin Kyu Kang, C. S. Kim +1

We consider a $μ - τ$ symmetry in neutrino sectors realized at GUT scale in the context of a seesaw model. In our scenario, the exact $μ - τ$ symmetry realized in the basis where the c…

hep-ph2006★ 15 cited

Associated production of a single heavy T-quark in the littlest and simplest little Higgs models

Kingman Cheung, C. S. Kim, Kang Young Lee +1

The colored SU(2)-singlet heavy T-quark is one of the most crucial ingredients in little Higgs models, which is introduced to cancel the largest contribution of the SM top quark to…

hep-ph2006★ 51 cited

B_s^0 - \bar{B}_s^0 Mixing in Leptophobic Z^\prime Model

Seungwon Baek, Jong Hun Jeon, C. S. Kim

Leptophobic Z^\prime gauge boson appears naturally in many grand unified theories, such as flipped SU(5) or string-inspired E_6 models. This elusive particle easily escapes the dir…

hep-ph2006★ 6 cited

Lepton flavor violation in muonium decay and muon colliders in models with heavy neutrinos

Gorazd Cvetic, Claudio O. Dib, Choong-Sun Kim +1

We study the lepton-flavor-violating reaction $μ^{+} e^{-} \to e^{+} e^{-}$ within two extensions of the standard model that include heavy neutrinos. The reaction is studied in the low ene…

hep-ph2006★ 26 cited

Constraint of B_{d,s}-bar{B}_{d,s} mixing on warped extra-dimension model

Sanghyeon Chang, C. S. Kim, Jeonghyeon Song

Recent CDF measurement of the Bs-Bs oscillation frequency, at the Tevatron imposes significant constraint on various models for new physics. A warped extra-dimension model with cus…

hep-ph2006★ 65 cited

Extended double seesaw model for neutrino mass spectrum and low scale leptogenesis

Sin Kyu Kang, C. S. Kim

We consider a variant of seesaw mechanism by introducing extra singlet neutrinos, with which we show how the low scale leptogenesis is realized without imposing the tiny mass split…

hep-ph2006★ 18 cited

$B_{s} - B ˉ_{s}$ Mixing and Its Implication for $b \to s$ Transitions in Supersymmetry

Richard Arnowitt, Bhaskar Dutta, Bo Hu +1

We investigate the effect of the current measurement of the neutral $B_{s}$ meson mass difference, $Δ M_{B_{s}}$ , on SUGRA models which have non-zero values of the soft breaking terms $…

hep-ph2006★ 22 cited

New physics in $B \to π π$ and $B \to π K$ decays

Seungwon Baek

We perform a combined analysis of $B \to π π$ and $B \to π K$ decays with the current experimental data. Assuming SU(3) flavor symmetry and no new physics contributions to the topolo…

hep-ph2006★ 20 cited

B_s - \bar{B}_s mixing in the MSSM scenario with large flavor mixing in the LL/RR sector

Seungwon Baek

We show that the recent measurements of $B_{s} - B ˉ_{s}$ mass difference, $Δ m_{s}$ , by DØ and CDF collaborations give very strong constraints on MSSM scenario with large flavor mixing…

hep-ph2006★ 66 cited

Phased Breaking of mu-tau symmetry and Leptogenesis

Y. H. Ahn, Sin Kyu Kang, C. S. Kim +1

Non-vanishing U_{e3} has been theoretically related to a certain flavor symmetry breaking in the neutrino sector. We propose a scenario to break the mu-tau symmetry so as to accomm…

hep-ph2006★ 26 cited

Exclusive B-> M ν\barν (M= π, K, ρ, K^*) Decays and Leptophobic Z^\prime Model

Jong Hun Jeon, C. S. Kim, Jake Lee +1

We consider the exclusive flavor changing neutral current processes B -> M ν\barν (M= π, K, ρ, K^*) in the leptophobic Z^\prime model, in which the charged leptons do not couple to…