1.

Nucleon and $\Delta $ isobar in a strong magnetic field
/ Yakhshiev, Ulugbek ; Kim, HyunChul ; Oka, Makoto
We investigate the static properties of the nucleon in the presence of strong magnetic fields and discuss the consequent changes of the nucleon structure, based on the Skyrme model. [...]
Published in Physical Review D 99 (2019)
10.1103/PhysRevD.99.054027
arXiv:1902.00212
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2.

Further signatures to support the tetraquark mixing framework for the two lightmeson nonets
/ Kim, Hungchong ; Kim, K. S. ; Cheoun, MyungKi ; Jido, Daisuke ; et al
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 ${a}_{0}\left(980\right)$, ${K}_{0}^{*}\left(800\right)$, ${f}_{0}\left(500\right)$, and ${f}_{0}\left(980\right)$ in the light nonet and ${a}_{0}\left(1450\right)$, ${K}_{0}^{*}\left(1430\right)$, ${f}_{0}\left(1370\right)$, and ${f}_{0}\left(1500\right)$ in the heavy nonet. [...]
Published in Physical Review D 99 (2019)
10.1103/PhysRevD.99.014005
arXiv:1811.00187
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3.

Hadronic Paschen–Back effect
/ Iwasaki, Sachio ; Oka, Makoto ; Suzuki, Kei ; Yoshida, Tetsuya
We find a novel phenomenon induced by the interplay between a strong magnetic field and finite orbital angular momenta in hadronic systems, which is analogous to the Paschen–Back effect observed in the field of atomic physics. [...]
Published in Physics letters B 790 (2019) 7176
10.1016/j.physletb.2018.10.024
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4.

Nonperturbative evaluation for anomalous dimension in 2dimensional $O\left(3\right)$ sigma model
/ Calle Jimenez, Sergio ; Oka, Makoto ; Sasaki, Kiyoshi
We nonperturbatively calculate the wavefunction renormalization in the twodimensional $O\left(3\right)$ sigma model. [...]
Published in Physical Review D 97 (2018)
10.1103/PhysRevD.97.114506
arXiv:1802.01140
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5.

Tetraquark mixing framework for isoscalar resonances in light mesons
/ Kim, Hungchong ; Kim, K. S. ; Cheoun, MyungKi ; Oka, Makoto
Recently, a tetraquark mixing framework has been proposed for light mesons and applied more or less successfully to the isovector resonances, ${a}_{0}\left(980\right)$, ${a}_{0}\left(1450\right)$, as well as to the isodoublet resonances, ${K}_{0}^{*}\left(800\right),{K}_{0}^{*}\left(1430\right)$. [...]
Published in Physical Review D 97 (2018)
10.1103/PhysRevD.97.094005
arXiv:1711.08213
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6.

Charmonium ground and excited states at finite temperature from complex Borel sum rules
/ Araki, KenJi ; Suzuki, Kei ; Gubler, Philipp ; Oka, Makoto
Charmonium spectral functions in vector and pseudoscalar channels at finite temperature are investigated through the complex Borel sum rules and the maximum entropy method. [...]
Published in Physics letters B (2018)
10.1016/j.physletb.2018.01.072
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7.

Flavorsinglet hidden charm pentaquark
/ Irie, Yoya ; Oka, Makoto ; Yasui, Shigehiro
One type of hidden charm pentaquark ${P}_{cs}$ with quark content $c\overline{c}uds$ in lightflavor singlet state is studied in the quark model. [...]
Published in Phys. Rev. D 97 (2018)
10.1103/PhysRevD.97.034006
arXiv:1707.04544
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8.

Searching for observable effects induced by anomalous triangle singularities
/ Liu, XiaoHai ; Oka, Makoto ; Zhao, Qiang
We investigate the anomalous triangle singularity (ATS) and its possible manifestations in various processes. [...]
Published in Physics letters B (2015)
10.1016/j.physletb.2015.12.027
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9.

QCD sum rules on the complex Borel plane
/ Araki, KenJi ; Ohtani, Keisuke ; Gubler, Philipp ; Oka, Makoto
Boreltransformed QCD sum rules conventionally use a realvalued parameter (the Borel mass) for specifying the exponential weight over which hadronic spectral functions are averaged. [...]
Published in PTEP 2014 (2014) 073B03
10.1093/ptep/ptu092
arXiv:1403.6299
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