J. Yamagata-sekihara

activity

20242026

collaborators

6 papers

nucl-ex2026

First Measurement of the $K^{-}$ Escape Cross Section in the $^{12} C (K^{-}, p)$ Reaction

Fumiya Oura, Yudai Ichikawa, Junko Yamagata-Sekihara +32

We investigated the $K ˉ$ -nucleus interaction through the simultaneous measurement of the inclusive $^{12} C (K^{-}, p)$ and exclusive $K^{-}$ -escape $^{12}{\rm C}(K^-, p K^-_{…

hep-ph2026

Structure and Formation of the Deeply Bound $p ˉ$ atoms

Nobuhide Miyazaki, Junko Yamagata-Sekihara, Satoru Hirenzaki

We study theoretically the structure and formation of the deeply bound $p ˉ$ atoms. We find that the widths of the atomic states are narrower than the level spacing even for de…

nucl-th2026

Feasibility of the observation of $I^\cdot^{'}$ mesic nuclei in the semi-exclusive $^{12}$ C( $p, d p$ ) reaction

Natsumi Ikeno, Yuko Higashi, Hiroyuki Fujioka +7

We study theoretically the feasibility of the semi-exclusive $^{12}$ C( $p, d p$ ) $X$ reaction for the observation of $I^\cdot^{'}$ mesic nuclei using the microscopic transport model JAM.…

nucl-th2025

Interrelation between $p ˉ$ -Ca Atom Spectra and Nuclear Density Profiles

Kenta Yoshimura, Shunsuke Yasunaga, Daisuke Jido +2

This work studies $p ˉ$ -Ca atom spectra in light of the strong shifts and level widths, using the optical model with several types of parametric coefficients. The spectroscopic…

nucl-ex2025

Excitation Spectra of the $^{12} C (p, d)$ Reaction near the $I^\cdot^{'}$ -Meson Emission Threshold Measured in Coincidence with High-Momentum Protons

R. Sekiya, K. Itahashi, Y. K. Tanaka +74

The missing mass of the $^{12} C (p, d)$ reaction has been measured near the $I^\cdot^{'}$ -meson emission threshold in coincidence with a high-momentum proton to selectively collect $…

nucl-th2024

Investigation of kaonic atom optical potential by the high precision data of kaonic $^{3}$ He and $^{4}$ He atoms

J. Yamagata-Sekihara, Y. Iizawa, D. Jido +4

We theoretically investigate kaonic atom states based on the latest high precision data of the $2 p$ states of the kaonic atoms in $^{3}$ He and $^{4}$ He (J-PARC E62). We consider the ph…

First Measurement of the K− Escape Cross Section in the 12C(K−,p) Reaction

Structure and Formation of the Deeply Bound pˉ​ atoms

Feasibility of the observation of I^⋅′ mesic nuclei in the semi-exclusive 12C(p,dp) reaction

Interrelation between pˉ​-Ca Atom Spectra and Nuclear Density Profiles

Excitation Spectra of the 12C(p,d) Reaction near the I^⋅′-Meson Emission Threshold Measured in Coincidence with High-Momentum Protons