Soongsil University

output

19952026

most citedMeasurement of the branching ratio of

B ˉ \to D^{(*)} τ^{-} ν ˉ_{τ}

relative to

B ˉ \to D^{(*)} ℓ^{-} ν ˉ_{ℓ}

decays with hadronic tagging at Belle

676 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 hep-phShow all

31 papers · 1 filter

hep-ph2026

Electric and magnetic timelike form factors of hyperons at large transfer momentum

G. Ramalho, M. T. Peña, K. Tsushima +1

There has been considerable progress in the study of the electromagnetic form factors of baryons in the timelike region, through electron-positron scattering reactions ($e^+ e^- \t…

hep-ph2025

Nucleon to Roper transition amplitudes and electromagnetic form factors

G. Ramalho

The second excitation of the nucleon, the Roper, has properties differentiated from other low-lying nucleon resonances. Their properties challenge our understanding of the structur…

hep-ph2025★ 1 cited

Timelike electromagnetic form factors of hyperons at large $q^{2}$

G. Ramalho, M. T. Peña, K. Tsushima +1

In the last few years there has been considerable progress in the study of the electromagnetic form factors of baryons in the timelike region, through electron-positron scattering,…

hep-ph2024★ 3 cited

Effect of isoscalar and isovector scalar fields on baryon semileptonic decays in nuclear matter

Koichi Saito, Tsuyoshi Miyatsu, Myung-Ki Cheoun

The precise determination of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements is very important, because it could be a clue to new physics beyond Standard Theory. This is partic…

hep-ph2024★ 12 cited

Electromagnetic $∣ G_{E} / G_{M} ∣$ ratios of hyperons at large timelike $q^{2}$

G. Ramalho, M. T. Peña, K. Tsushima +1

In recent years, it has become possible to measure not only the magnitude of the electric ( $G_{E}$ ) and magnetic ( $G_{M}$ ) form factors of spin $\frac{1}{2}$ baryons, but also to measu…

hep-ph2024★ 6 cited

Weak interaction axial form factors of the octet baryons in nuclear medium

G. Ramalho, K. Tsushima, Myung-Ki Cheoun

We study the axial-vector and the induced pseudoscalar form factors associated with the weak transitions between the octet baryon members in nuclear medium, using a covariant const…

hep-ph2023

About the magnitude of the $γ^{*} N \to N (1520)$ transverse amplitudes near $Q^{2} = 0$

G. Ramalho

The $γ^{*} N \to N (1520)$ transition has a property that differs from the other low-lying nucleon resonance amplitudes: the magnitude of the transverse helicity amplitudes.The tra…

hep-ph2023★ 5 cited

Meson cloud contributions to the Dalitz decays of decuplet to octet baryons

G. Ramalho, K. Tsushima

We study the role of the meson cloud on the electromagnetic transitions from decuplet ( $B^{'}$ ) to octet ( $B$ ) baryons in terms of the squared four-momentum transfer $q^{2}$ . In the qua…

hep-ph2023★ 35 cited

Electromagnetic Transition Form Factors of Baryon Resonances

G. Ramalho, M. T. Peña

Recent experimental and theoretical advancements have led to significant progress in our understanding of the electromagnetic structure of nucleons ( $N$ ), nucleon excitations ($N^\…

hep-ph2020★ 15 cited

Isospin mass differences of singly heavy baryons

Ghil-Seok Yang, Hyun-Chul Kim

We study the isospin mass differences of singly heavy baryons, based on a pion mean-field approach. We consider both the electromagnetic interactions and the hadronic contributions…

hep-ph2020★ 5 cited

ν\barν -Pair Synchrotron Emission in Neutron-Star Matter based on a Relativistic Quantum Approach

Tomoyuki Maruyama A. Baha Balantekin, Myung-Ki Cheoun, Toshitaka Kajino +1

We study the neutrino anti-neutrino pair synchrotron emission from electrons and protons in a relativistic quantum approach. This process occurs only under a strong magnetic field,…

hep-ph2019★ 5 cited

The viability of the 3+1 neutrino model in the supernova neutrino process

Heamin Ko, Dukjae Jang, Motohiko Kusakabe +1

Adopting the 3+1 neutrino mixing parameters by the IceCube and shortbase line experiments, we investigate the sterile-active neutrino oscillation effects on the supernova neutrino…

hep-ph2019★ 30 cited

Magnetic transitions and radiative decays of singly heavy baryons

Ghil-Seok Yang, Hyun-Chul Kim

A pion mean-field approach allows one to investigate light and singly heavy baryons on an equal footing. In the large $N_{c}$ limit, the light and singly heavy baryons are viewed res…

hep-ph2018★ 16 cited

Further signatures to support the tetraquark mixing framework for the two light-meson nonets

Hungchong Kim, K. S. Kim, Myung-Ki Cheoun +2

In this work, we investigate additional signatures to support the tetraquark mixing framework that has been recently proposed as a possible structure for the two nonets, namely $a_…

hep-ph2018★ 2 cited

New targets for relic antineutrino capture

Jeong-Yeon Lee, Yeongduk Kim, Satoshi Chiba

$^{163}$ Ho has been considered as a suitable candidate for the capture of relic antineutrinos. However, the detection of the relic antineutrino using $^{163}$ Ho is extremely challe…

hep-ph2018★ 1 cited

New narrow nucleon resonances $N^{} (1685)$ and $N^{} (1726)$ within the chiral quark-soliton model

Ghil-Seok Yang, Hyun-Chul Kim

We investigate the strong and radiative decay widths of the narrow nucleon resonances $N^{*} (1685)$ and $N^{*} (1726)$ within the framework of the SU(3) chiral quark-soliton model.…

hep-ph2018★ 17 cited

Meson-baryon coupling constants of the SU(3) baryons with flavor SU(3) symmetry breaking

Ghil-Seok Yang, Hyun-Chul Kim

We investigate the strong coupling constants for the baryon octet-octet, decuplet-octet, and decuplet-decuplet vertices with pseudoscalar mesons within a general framework of the c…

hep-ph2018★ 37 cited

Magnetic moments of the lowest-lying singly heavy baryons

Ghil-Seok Yang, Hyun-Chul Kim

A light baryon is viewed as $N_{c}$ valence quarks bound by meson mean fields in the large $N_{c}$ limit. In much the same way a singly heavy baryon is regarded as $N_{c} - 1$ valence quar…

hep-ph2018★ 31 cited

Mass spectra of singly heavy baryons in a self-consistent chiral quark-soliton model

June-Young Kim, Hyun-Chul Kim, Ghil-Seok Yang

We investigate the mass spectra of the lowest-lying singly heavy baryons, based on the self-consistent chiral quark-soliton model. We take into account the rotational $1/ N_{c}$ and s…

hep-ph2017★ 20 cited

Tetraquark mixing framework for isoscalar resonances in light mesons

Hungchong Kim, K. S. Kim, Myung-Ki Cheoun +1

Recently, a tetraquark mixing framework has been proposed for light mesons and applied more or less successfully to the isovector resonances, $a_{0} (980), a_{0} (1450)$ , as well as to t…

hep-ph2017★ 46 cited

Strong decays of exotic and non-exotic heavy baryons in the chiral quark-soliton model

Hyun-Chul Kim, Maxim V. Polyakov, Michal Praszalowicz +1

In the large $N_{c}$ limit both heavy and light baryons are described by the universal mean field, which allows us to relate the properties of heavy baryons to light ones. With the o…

hep-ph2017★ 1 cited

Flavor analysis of nucleon, $Δ$ , and hyperon electromagnetic form factors

Martin Rohrmoser, Ki-Seok Choi, Willibald Plessas

By the analysis of the world data base of elastic electron scattering on the proton and the neutron (for the latter, in fact, on $^{2} H$ and $^{3} H e$ ) important experimental insights h…

hep-ph2016★ 12 cited

Spin-1 diquark contributing to the formation of tetraquarks in light mesons

Hungchong Kim, Myung-Ki Cheoun, K. S. Kim

We apply a mixing framework to the light meson systems and examine tetraquark possibility in the scalar channel. In the diquark-antidiquark model, a scalar diquark is a compact obj…

hep-ph2016★ 44 cited

Pion mean fields and heavy baryons

Ghil-Seok Yang, Hyun-Chul Kim, Maxim V. Polyakov +1

We show that the masses of the lowest-lying heavy baryons can be very well described in a pion mean-field approach. We consider a heavy baryon as a system consisting of the $N_{c} - 1$ …

Electric and magnetic timelike form factors of hyperons at large transfer momentum

Nucleon to Roper transition amplitudes and electromagnetic form factors

Timelike electromagnetic form factors of hyperons at large q2

Effect of isoscalar and isovector scalar fields on baryon semileptonic decays in nuclear matter

Electromagnetic ∣GE​/GM​∣ ratios of hyperons at large timelike q2

Weak interaction axial form factors of the octet baryons in nuclear medium

About the magnitude of the γ∗N→N(1520) transverse amplitudes near Q2=0

Meson cloud contributions to the Dalitz decays of decuplet to octet baryons

Electromagnetic Transition Form Factors of Baryon Resonances

Isospin mass differences of singly heavy baryons

ν\barν -Pair Synchrotron Emission in Neutron-Star Matter based on a Relativistic Quantum Approach

The viability of the 3+1 neutrino model in the supernova neutrino process

Magnetic transitions and radiative decays of singly heavy baryons

Further signatures to support the tetraquark mixing framework for the two light-meson nonets

New targets for relic antineutrino capture

New narrow nucleon resonances N∗(1685) and N∗(1726) within the chiral quark-soliton model

Meson-baryon coupling constants of the SU(3) baryons with flavor SU(3) symmetry breaking

Magnetic moments of the lowest-lying singly heavy baryons

Mass spectra of singly heavy baryons in a self-consistent chiral quark-soliton model

Tetraquark mixing framework for isoscalar resonances in light mesons

Strong decays of exotic and non-exotic heavy baryons in the chiral quark-soliton model

Flavor analysis of nucleon, Δ, and hyperon electromagnetic form factors

Spin-1 diquark contributing to the formation of tetraquarks in light mesons

Pion mean fields and heavy baryons

Timelike electromagnetic form factors of hyperons at large $q^{2}$

Electromagnetic $∣ G_{E} / G_{M} ∣$ ratios of hyperons at large timelike $q^{2}$

About the magnitude of the $γ^{*} N \to N (1520)$ transverse amplitudes near $Q^{2} = 0$

New narrow nucleon resonances $N^{} (1685)$ and $N^{} (1726)$ within the chiral quark-soliton model

Flavor analysis of nucleon, $Δ$ , and hyperon electromagnetic form factors