Researchers Database

HIRENZAKI Satoru

FacultyFaculty Division of Natural Sciences Research Group of Physics
PositionProfessor
Last Updated :2024/03/15

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Profile and Settings

  • Name (Japanese)

    Hirenzaki
  • Name (Kana)

    Satoru

Research Interests

  • 中間子原子核
  • 中間子原子
  • 有限密度におけるハドロンの性質と対称性
  • ハドロン物理
  • 原子核物理
  • Mesic Nuclei
  • Mesic Atom
  • Hadron properties at finite density and symmetry
  • Hadron Physics
  • Nuclear Physics

Research Areas

  • Natural sciences, Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics

Education

  • Apr. 1988, Mar. 1991, 東京都立大学, 理学研究科博士課程, 物理学専攻, Japan
  • Apr. 1986, Mar. 1988, Tokyo Metropolitan University, Graduate School, Division of Natural Science (Doctor course), Physics
  • Apr. 1982, Mar. 1986, Tokyo University of Science, 理学部, 物理学科, Japan

Association Memberships

  • 日本応用数理学会, Mar. 2022
  • 日本物理学会, 9999

Ⅱ.研究活動実績

Published Papers

  • Refereed, Progress of Theoretical and Experimental Physics, Oxford University Press (OUP), Structure of double pionic atoms, Akari Tani; Natsumi Ikeno; Daisuke Jido; Hideko Nagahiro; Hiroyuki Fujioka; Kenta Itahashi; Satoru Hirenzaki, Abstract We study theoretically the structure of double pionic atoms, in which two negatively charged pions ($\pi^-$) are bound in the atomic orbits. The double pionic atom is considered to be an interesting system from the point of view of the multi-bosonic systems. In addition, it could be possible to deduce valuable information on the isospin $I = 2$$\pi\pi$ interaction and the pion–nucleus strong interaction. In this paper, we take into account the $\pi\pi$ strong and electromagnetic interactions, and evaluate the effects on the binding energies by perturbation theory for the double pionic atoms in heavy nuclei. We investigate several combinations of two pionic states and find that the order of magnitude of the energy shifts due to the $\pi\pi$ interaction is around 10 keV for the strong interaction and around 100 keV for the electromagnetic interaction for the ground states., 15 Mar. 2021, 2021, 3, Scientific journal, 10.1093/ptep/ptab023
  • Refereed, Progress of Theoretical and Experimental Physics, Oxford University Press (OUP), An event excess observed in the deeply bound region of the 12C (K−, p) missing-mass spectrum, Yudai Ichikawa; Junko Yamagata-Sekihara; Jung Keun Ahn; Yuya Akazawa; Kanae Aoki; Elena Botta; Hiroyuki Ekawa; Petr Evtoukhovitch; Alessandro Feliciello; Manami Fujita; Toshiyuki Gogami; Shoichi Hasegawa; Tomoyuki Hasegawa; Shuhei Hayakawa; Tomonori Hayakawa; Satoru Hirenzaki; Ryotaro Honda; Kenji Hosomi; Ken’ichi Imai; Wooseung Jung; Shunsuke Kanatsuki; Shin Hyung Kim; Shinji Kinbara; Kazuya Kobayashi; Jaeyong Lee; Simonetta Marcello; Koji Miwa; Taejin Moon; Tomofumi Nagae; Yoshiyuki Nakada; Manami Nakagawa; Takuya Nanamura; Megumi Naruki; Atsushi Sakaguchi; Hiroyuki Sako; Susumu Sato; Yuki Sasaki; Kotaro Shirotori; Hitoshi Sugimura; Toshiyuki Takahashi; Hirokazu Tamura; Kiyoshi Tanida; Zviadi Tsamalaidze; Mifuyu Ukai; Takeshi O Yamamoto, Abstract We have measured, for the first time, the inclusive missing-mass spectrum of the $^{12}$C$(K^-, p)$ reaction at an incident kaon momentum of 1.8 GeV/$c$ at the J-PARC K1.8 beamline. We observed a prominent quasi-elastic peak ($K^-p \rightarrow K^-p$) in this spectrum. In the quasi-elastic peak region, the effect of secondary interaction is apparently observed as a peak shift, and the peak exhibits a tail in the bound region. We compared the spectrum with a theoretical calculation based on the Green’s function method by assuming different values of the parameters for the $\bar{K}$–nucleus optical potential. We found that the spectrum shape in the binding-energy region $-300 \, \text{MeV} < B_{K} < 40$ MeV is best reproduced with the potential depths $V_0 = -80$ MeV (real part) and $W_0 = -40$ MeV (imaginary part). On the other hand, we observed a significant event excess in the deeply bound region around $B_{K} \sim 100$ MeV, where the major decay channel of $K^- NN \to \pi\Sigma N$ is energetically closed, and the non-mesonic decay modes ($K^- NN \to \Lambda N$ and $\Sigma N$) should mainly contribute. The enhancement is fitted well by a Breit–Wigner function with a kaon-binding energy of 90 MeV and width 100 MeV. A possible interpretation is a deeply bound state of a $Y^{*}$-nucleus system., 15 Dec. 2020, 2020, 12, Scientific journal, 10.1093/ptep/ptaa139
  • Refereed, Physical Review C, American Physical Society (APS), Search for the η mesic He3 in the pd→dpπ0 reaction with the WASA-at-COSY facility, P. Adlarson; W. Augustyniak; M. Bashkanov; S. D. Bass; F. S. Bergmann; M. Berłowski; A. Bondar; M. Büscher; H. Calén; I. Ciepał; H. Clement; E. Czerwiński; K. Demmich; R. Engels; A. Erven; W. Erven; W. Eyrich; P. Fedorets; K. Föhl; K. Fransson; F. Goldenbaum; A. Goswami; K. Grigoryev; L. Heijkenskjöld; V. Hejny; N. Hüsken; S. Hirenzaki; T. Johansson; B. Kamys; N. G. Kelkar; G. Kemmerling; A. Khoukaz; A. Khreptak; D. A. Kirillov; S. Kistryn; H. Kleines; B. Kłos; W. Krzemień; P. Kulessa; A. Kupść; K. Lalwani; D. Lersch; B. Lorentz; A. Magiera; R. Maier; P. Marciniewski; B. Mariański; H.-P. Morsch; P. Moskal; H. Ohm; W. Parol; E. Perez del Rio; N. M. Piskunov; D. Prasuhn; D. Pszczel; K. Pysz; J. Ritman; A. Roy; O. Rundel; S. Sawant; S. Schadmand; T. Sefzick; V. Serdyuk; B. Shwartz; T. Skorodko; M. Skurzok; J. Smyrski; V. Sopov; R. Stassen; J. Stepaniak; E. Stephan; G. Sterzenbach; H. Stockhorst; H. Ströher; A. Szczurek; M. Wolke; A. Wrońska; P. Wüstner; A. Yamamoto; J. Zabierowski; M. J. Zieliński; J. Złomańczuk; M. Żurek, 20 Oct. 2020, 102, 4, Scientific journal, 10.1103/physrevc.102.044322
  • Refereed, Physics Letters B, Elsevier BV, Search for η mesic 3He with the WASA-at-COSY facility in the pd→3He2γ and pd→3He6γ reactions, P. Adlarson; W. Augustyniak; W. Bardan; M. Bashkanov; S.D. Bass; M. Berłowski; A. Bondar; M. Büscher; H. Calén; I. Ciepał; H. Clement; E. Czerwiński; R. Engels; A. Erven; W. Erven; W. Eyrich; P. Fedorets; K. Föhl; K. Fransson; F. Goldenbaum; A. Goswami; K. Grigoryev; L. Heijkenskjöld; V. Hejny; S. Hirenzaki; L. Jarczyk; T. Johansson; B. Kamys; N.G. Kelkar; G. Kemmerling; A. Khreptak; D.A. Kirillov; S. Kistryn; H. Kleines; B. Kłos; W. Krzemień; P. Kulessa; A. Kupść; K. Lalwani; D. Lersch; B. Lorentz; A. Magiera; R. Maier; P. Marciniewski; B. Mariański; H.-P. Morsch; P. Moskal; H. Ohm; W. Parol; E. Perez del Rio; N.M. Piskunov; D. Prasuhn; D. Pszczel; K. Pysz; J. Ritman; A. Roy; O. Rundel; S. Sawant; S. Schadmand; I. Schätti–Ozerianska; T. Sefzick; V. Serdyuk; B. Shwartz; T. Skorodko; M. Skurzok; J. Smyrski; V. Sopov; R. Stassen; J. Stepaniak; E. Stephan; G. Sterzenbach; H. Stockhorst; H. Ströher; A. Szczurek; A. Trzciński; M. Wolke; A. Wrońska; P. Wüstner; A. Yamamoto; J. Zabierowski; M.J. Zieliński; J. Złomańczuk; P. Żuprański; M. Żurek, Mar. 2020, 802, 135205, 135205, Scientific journal, 10.1016/j.physletb.2020.135205
  • Refereed, Nuclear Physics A, Elsevier BV, Non-mesonic decay of the η-mesic 3He via pd→(3He-η)bound→ 3He2γ(6γ) reaction, M. Skurzok; S. Hirenzaki; S. Kinutani; H. Konishi; P. Moskal; H. Nagahiro; O. Rundel, Jan. 2020, 993, 121647, 121647, Scientific journal, 10.1016/j.nuclphysa.2019.121647
  • Refereed, Progress of Theoretical and Experimental Physics, Oxford University Press (OUP), Structure of $\eta^{\prime}$ mesonic nuclei in a relativistic mean field theory, Daisuke Jido; Hanayo Masutani; Satoru Hirenzaki, © 2019 The Author(s). The structure and the energy spectrum of the η′ mesonic nuclei are investigated in a relativistic mean field theory. One expects a substantial attraction for the η′ meson in finite nuclei due to the partial restoration of chiral symmetry in the nuclear medium. Such a hadronic scale interaction for the η′ mesonic nuclei may provide modification of the nuclear structure. The relativistic mean field theory is a self-contained model for finite nuclei that provides the saturation property within the model, and is useful for investigating the structure change of the nucleus induced by the η′ meson. Using the local density approximation for the mean fields, we solve the equations of motion for the nucleons and the η′ meson self-consistently, and obtain the nuclear density distribution and the η′ energy spectrum for the η′ mesonic nuclei. We take 12C, 16O, and 40 Ca as target nuclei. We find several bound states of the η′ meson for these nuclei thanks to the attraction for η′ in nuclei. We also find a sufficient change of the nuclear structure especially for the 1s bound state of η′. This implies that the production of the 1s bound state in nuclear reactions may be suppressed., 01 May 2019, 2019, 5, Scientific journal, 10.1093/ptep/ptz031
  • Refereed, Physics Letters B, Elsevier BV, Constraining the optical potential in the search for η-mesic 4He, M. Skurzok; P. Moskal; N.G. Kelkar; S. Hirenzaki; H. Nagahiro; N. Ikeno, Jul. 2018, 782, 6, 12, Scientific journal, 10.1016/j.physletb.2018.04.047
  • Refereed, Physical Review Letters, American Physical Society (APS), Spectroscopy of Pionic Atoms in Sn122(d,He3) Reaction and Angular Dependence of the Formation Cross Sections, T. Nishi; K. Itahashi; G. P. A. Berg; H. Fujioka; N. Fukuda; N. Fukunishi; H. Geissel; R. S. Hayano; S. Hirenzaki; K. Ichikawa; N. Ikeno; N. Inabe; S. Itoh; M. Iwasaki; D. Kameda; S. Kawase; T. Kubo; K. Kusaka; H. Matsubara; S. Michimasa; K. Miki; G. Mishima; H. Miya; H. Nagahiro; M. Nakamura; S. Noji; K. Okochi; S. Ota; N. Sakamoto; K. Suzuki; H. Takeda; Y. K. Tanaka; K. Todoroki; K. Tsukada; T. Uesaka; Y. N. Watanabe; H. Weick; H. Yamakami; K. Yoshida, We observed the atomic 1s and 2p states of π- bound to Sn121 nuclei as distinct peak structures in the missing mass spectra of the Sn122(d,He3) nuclear reaction. A very intense deuteron beam and a spectrometer with a large angular acceptance let us achieve a potential of discovery, which includes the capability of determining the angle-dependent cross sections with high statistics. The 2p state in a Sn nucleus was observed for the first time. The binding energies and widths of the pionic states are determined and found to be consistent with previous experimental results of other Sn isotopes. The spectrum is measured at finite reaction angles for the first time. The formation cross sections at the reaction angles between 0° and 2° are determined. The observed reaction-angle dependence of each state is reproduced by theoretical calculations. However, the quantitative comparison with our high-precision data reveals a significant discrepancy between the measured and calculated formation cross sections of the pionic 1s state., 13 Apr. 2018, 120, 15, Scientific journal, 10.1103/physrevlett.120.152505
  • Refereed, Physical Review C, American Physical Society (APS), Missing-mass spectroscopy of the C12(p,d) reaction near the η′-meson production threshold, Y. K. Tanaka; K. Itahashi; H. Fujioka; Y. Ayyad; J. Benlliure; K.-T. Brinkmann; S. Friedrich; H. Geissel; J. Gellanki; C. Guo; E. Gutz; E. Haettner; M. N. Harakeh; R. S. Hayano; Y. Higashi; S. Hirenzaki; C. Hornung; Y. Igarashi; N. Ikeno; M. Iwasaki; D. Jido; N. Kalantar-Nayestanaki; R. Kanungo; R. Knöbel; N. Kurz; V. Metag; I. Mukha; T. Nagae; H. Nagahiro; M. Nanova; T. Nishi; H. J. Ong; S. Pietri; A. Prochazka; C. Rappold; M. P. Reiter; J. L. Rodríguez-Sánchez; C. Scheidenberger; H. Simon; B. Sitar; P. Strmen; B. Sun; K. Suzuki; I. Szarka; M. Takechi; I. Tanihata; S. Terashima; Y. N. Watanabe; H. Weick; E. Widmann; J. S. Winfield; X. Xu; H. Yamakami; J. Zhao, Excitation-energy spectra of C11 nuclei near the η′-meson production threshold have been measured by missing-mass spectroscopy using the C12(p,d) reaction. A carbon target has been irradiated with a 2.5 GeV proton beam supplied by the synchrotron SIS-18 at GSI to produce η′-meson bound states in C11 nuclei. Deuterons emitted at 0 in the reaction have been momentum analyzed by the fragment separator (FRS), used as a high-resolution spectrometer. No distinct structure due to the formation of η′-mesic states is observed although a high statistical sensitivity is achieved in the experimental spectra. Upper limits on the formation cross sections of η′-mesic states are determined, and thereby a constraint imposed on the η′-nucleus interaction is discussed., 12 Jan. 2018, 97, 1, Scientific journal, 10.1103/physrevc.97.015202
  • Refereed, European Physical Journal A, SPRINGER, η -nucleus interaction from the d + d reaction around the η production threshold, N. Ikeno; H. Nagahiro; D. Jido; S. Hirenzaki, © 2017, SIF, Springer-Verlag GmbH Germany. The η mesic nucleus is considered to be one of the interesting exotic many-body systems and has been studied since the 1980s theoretically and experimentally. Recently, the formation of the η mesic nucleus in the fusion reactions of the light nuclei such as d+ d→ (η+ α) → X has been proposed and the experiments have been performed by WASA-at-COSY. We develop a theoretical model to evaluate the formation rate of the η mesic nucleus in the fusion reactions and show the calculated results. We find that the η bound states could be observed in the reactions in cases with the strong attractive and small absorptive η-nucleus interactions. We compare our results with existing data of the d+ d→ η+ α and the d+ d→ 3He+ N+ π reactions. We find that the analyses by our theoretical model with the existing data can provide new information on the η-nucleus interaction., 01 Oct. 2017, 53, 10, 194, Scientific journal, 10.1140/epja/i2017-12381-7
  • Refereed, Physical Review Letters, American Physical Society (APS), Measurement of Excitation Spectra in the C12(p,d) Reaction near the η′ Emission Threshold, Y. K. Tanaka; K. Itahashi; H. Fujioka; Y. Ayyad; J. Benlliure; K.-T. Brinkmann; S. Friedrich; H. Geissel; J. Gellanki; C. Guo; E. Gutz; E. Haettner; M. N. Harakeh; R. S. Hayano; Y. Higashi; S. Hirenzaki; C. Hornung; Y. Igarashi; N. Ikeno; M. Iwasaki; D. Jido; N. Kalantar-Nayestanaki; R. Kanungo; R. Knöbel; N. Kurz; V. Metag; I. Mukha; T. Nagae; H. Nagahiro; M. Nanova; T. Nishi; H. J. Ong; S. Pietri; A. Prochazka; C. Rappold; M. P. Reiter; J. L. Rodríguez-Sánchez; C. Scheidenberger; H. Simon; B. Sitar; P. Strmen; B. Sun; K. Suzuki; I. Szarka; M. Takechi; I. Tanihata; S. Terashima; Y. N. Watanabe; H. Weick; E. Widmann; J. S. Winfield; X. Xu; H. Yamakami; J. Zhao, 08 Nov. 2016, 117, 20, Scientific journal, 10.1103/physrevlett.117.202501
  • Refereed, Progress of Theoretical and Experimental Physics, Oxford University Press (OUP), First application of superconducting transition-edge sensor microcalorimeters to hadronic atom X-ray spectroscopy, S. Okada; D. A. Bennett; C. Curceanu; W. B. Doriese; J. W. Fowler; J. D. Gard; F. P. Gustafsson; T. Hashimoto; R. S. Hayano; S. Hirenzaki; J. P. Hays-Wehle; G. C. Hilton; N. Ikeno; M. Iliescu; S. Ishimoto; K. Itahashi; M. Iwasaki; T. Koike; K. Kuwabara; Y. Ma; J. Marton; H. Noda; G. C. O’Neil; H. Outa; C. D. Reintsema; M. Sato; D. R. Schmidt; H. Shi; K. Suzuki; T. Suzuki; D. S. Swetz; H. Tatsuno; J. Uhlig; J. N. Ullom; E. Widmann; S.Yamada; J.Yamagata-Sekihara; J. Zmeskal, Sep. 2016, 2016, 9, 091D01, 091D01, Scientific journal, 10.1093/ptep/ptw130
  • Refereed, The European Physical Journal A, Springer Science and Business Media LLC, Formation of $\eta{^\prime}$ (958) meson bound states by the 6Li( $\gamma$ ,d) reaction, M. Miyatani; N. Ikeno; H. Nagahiro; S. Hirenzaki, Jul. 2016, 52, 7, Scientific journal, 10.1140/epja/i2016-16193-y
  • Refereed, PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, OXFORD UNIV PRESS INC, Formation spectra of pionic atoms in the Green's function method, Natsumi Ikeno; Junko Yamagata-Sekihara; Hideko Nagahiro; Satoru Hirenzaki, We study the formation spectra of deeply bound pionic atoms in the (d, He-3) reactions using the Green's function method, stimulated by recent developments in experimental techniques. The Green's function method is considered to be a better theoretical formalism than the effective number approach to evaluate the formation rate of unstable systems. We compare the calculated results by the Green's function method with those by the effective number approach in various cases. We find that the differences between the results obtained by both methods are reasonably small and we can reaffirm that the effective number approach is a good theoretical method for the analyses of the previous experimental data with typical binding-energy errors of Delta B. E. greater than or similar to 20 keV for the deeply bound pionic atoms. On the other hand, we think that theoretical results using the Green's function method will be necessary in the near future to deduce precise information on the pion properties in nuclei from analyses of the pionic atom data with better accuracy than before., Mar. 2015, 2015, 3, (13 pages), Scientific journal, 10.1093/ptep/ptv013
  • Refereed, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, ELSEVIER SCIENCE BV, Experimental constraints on the ω-nucleus real potential, S. Friedrich; K. Makonyi; V. Metag; D. Bayadilov; B. Bantes; R. Beck; Y. A. Beloglazov; S. Böse; K. T. Brinkmann; Th Challand; V. Crede; T. Dahlke; F. Dietz; P. Drexler; H. Eberhardt; D. Elsner; R. Ewald; K. Fornet-Ponse; F. Frommberger; Ch Funke; M. Gottschall; A. Gridnev; M. Grüner; E. Gutz; Ch Hammann; D. Hammann; J. Hannappel; J. Hartmann; W. Hillert; S. Hirenzaki; P. Hoffmeister; Ch Honisch; I. Jaegle; D. Kaiser; H. Kalinowsky; S. Kammer; I. I.Keshelashvili; V. Kleber; F. Klein; B. Krusche; M. Lang; I. V. Lopatin; Y. Maghrbi; M. Nanova; H. Nagahiro; J. Müller; T. Odenthal; D. Piontek; T. Rostomyan; S. chaepe; Ch Schmidt; H. Schmieden; R. Schmitz; T. Seifen; A. Thiel; U. Thoma; H. vanPee; D. Walther; J. Weil; Ch Wendel; U. Wiedner; A. Wilson; A. Winnebeck; F. Zenke, In a search for ω mesic states, the production of ω-mesons in coincidence with forward going protons has been studied in photon induced reactions on 12C for incident photon energies of 1250-3100 MeV. The π0γ pairs from decays of bound or quasi-free ω-mesons have been measured with the CBELSA/TAPS detector system in coincidence with protons registered in the MiniTAPS forward array. Structures in the total energy distribution of the π0γ pairs, which would indicate the population and decay of bound ω 11B states, are not observed. The π0γ cross section of 0.3 nb MeV-1 sr-1 observed in the bound state energy regime between -100 and 0 MeV may be accounted for by yield leaking into the bound state regime because of the large in-medium width of the ω-meson. A comparison of the measured total energy distribution with calculations suggests the real part V0 of the ω 11B potential to be small and only weakly attractive with V0(ρ = ρ0) = - 15 ± 35(stat) ± 20(syst) MeV in contrast to some theoretical predictions of attractive potentials with a depth of 100-150 MeV. © 2014 Elsevier B.V., 07 Sep. 2014, 736, 26, 32, Scientific journal, 10.1016/j.physletb.2014.07.004
  • Refereed, PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, OXFORD UNIV PRESS INC, (d,He-3) reaction on an odd-neutron nuclear target for the formation of deeply bound pionic atoms, Natsumi Ikeno; Junko Yamagata-Sekihara; Hideko Nagahiro; Satoru Hirenzaki, We consider pionic atom spectroscopy by the (d,He-3) reaction on an odd-neutron nuclear target in this article, which has not yet been investigated. In the (d,He-3) reaction on the odd-neutron nuclear target, we can observe pionic states in the even-neutron nucleus with spin-parity 0(+). We expect that these pionic states do not have additional shifts due to the effects of the residual interaction between neutron-hole and pionic states. For the even-neutron nuclear target cases, we may have to take into account the residual interaction effects to deduce the binding energies of the pionic states precisely from the high-precision experimental data, since the final pionic states are pion-particle plus neutron-hole [pi circle times n(-1)] states. Thus, in addition to widening the domain of pionic atom spectroscopy on the nuclear chart, the present study of the (d,He-3) reaction on an odd-neutron target is considered to be important to deduce extremely precise information on the binding energies of the observed pionic states, and to clarify the pion properties and aspects of the symmetries of the strong interaction at finite density. We modify the formula of the even-even nuclear target case to study pionic atom formation spectra on the even-odd nuclear target and show the numerical results of the Sn-117 target case. This experiment will be performed at RIBF/RIKEN in the near future., Jun. 2013, 2013, 6, 1, 15age, Scientific journal, 10.1093/ptep/ptt035
  • Refereed, PHYSICAL REVIEW C, AMER PHYSICAL SOC, Formation of eta '(958)-mesic nuclei by the (p,d) reaction, Hideko Nagahiro; Daisuke Jido; Hiroyuki Fujioka; Kenta Itahashi; Satoru Hirenzaki, We calculate theoretically the formation spectra of. n' (958)-nucleus systems in the (p,d) reaction for the investigation of in-medium modification of the. n' mass. We show comprehensive numerical calculations based on a simple form of the. n' optical potential in nuclei with various potential depths. We conclude that one finds evidence of a possible attractive interaction between. n' and the nucleus as a peak structure appearing around the. n' threshold in light nuclei such as C-11, when the attractive potential is stronger than 100 MeV and the absorption width is of order 40 MeV or less. Spectroscopy of the (p, d) reaction is expected to be performed experimentally at existing facilities, such as GSI. We also estimate the contributions from the omega and phi mesons, which have masses close to the. n' meson, concluding that the observation of the peak structure of the. n' -mesic nuclei is not disturbed, although their contributions may not be small., Apr. 2013, 87, 4, 045201 1-8, Scientific journal, 10.1103/PhysRevC.87.045201
  • Refereed, Progress of Theoretical and Experimental Physics, Pion–nucleon sigma term σπN and deeply bound pionic atoms, Natsumi Ikeno; Takahiro Nishi; Kenta Itahashi; Naoko Nose-Togawa; Akari Tani; Satoru Hirenzaki, Mar. 2023, Scientific journal, 10.1093/ptep/ptad031
  • Refereed, Nature Physics, Springer Science and Business Media LLC, Chiral symmetry restoration at high matter density observed in pionic atoms, Nishi, T; Itahashi, K; Ahn, D; et al.,, Mar. 2023, Scientific journal, 10.1038/s41567-023-02001-x

MISC

  • 日本物理学会講演概要集, 深く束縛されたπ中間子原子で探るπN σ 項, 池野なつ美; 西隆博; 板橋健太; 野瀬-外川直子; 谷明里; 比連崎悟, Mar. 2022
  • 日本物理学会講演概要集, K 中間子ヘリウム原子の 高精度測定から考察するK中間子-原子核相互作用, 山縣淳子; 比連崎悟, Mar. 2022
  • Not Refereed, 日本物理学会講演概要集(CD-ROM), Observables of deeply bound pionic atoms and πN σ term, 池野なつ美; 比連崎悟, Sep. 2021, 76, 2
  • 日本物理学会講演概要集(CD-ROM), Residual Interaction Effects in Mesic Atoms and Mesic Nuclei, 野瀬(外川)直子; 池野なつ美; 山縣淳子; 比連崎悟, Sep. 2021, 76, 2
  • Not Refereed, Journal of Physics: Conference Series, IOP Publishing, Search for η’-mesic nuclei using (p,d) reaction with FRS/Super-FRS at GSI/FAIR, Y. K. Tanaka; S. Bagchi; J. Benlliure; T. Dickel; V. Drozd; H. Ekawa; H. Fujioka; H. Geissel; F. Goldenbaum; C. Guo; E. Haettner; M. N. Harakeh; R.S. Hayano; S. Hirenzaki; C. Hornung; Y. Igarashi; N. Ikeno; K. Itahashi; M. Iwasaki; D. Jido; N. Kalantar-Nayestanaki; R. Kanungo; B. Kindler; R. Knöbel; D. Kostyleva; N. Kurz; N. Kuzminchuk; B. Lommel; Y. Ma; S. Y. Matsumoto; V. Metag; S. Minami; P. Moskal; I. Mukha; T. Nagae; H. Nagahiro; M. Nakagawa; H. J. Ong; H. Outa; S. Pietri; W. R. Plass; A. Prochazka; S. Purushothaman; C. Rappold; J. Ritman; J.L. Rodríguez-Sánchez; R. Ruber; O. Rundel; T. R. Saito; C. Scheidenberger; R. Sekiya; V. Serdyuk; H. Simon; B. Sitar; M. Skurzok; P. Strmen; B. Sun; I. Szarka; M. Takechi; I. Tanihata; S. Terashima; H. Weick; A. Yamamoto; J. Zhao, We plan a semi-exclusive measurement of the 12C(p,dp) reaction to search for η'-mesic nuclei, aiming at investigating in-medium properties of the η′-meson. We employ a 2.5 GeV proton beam impinging on a carbon target to produce η′-mesic 11C nuclei via the 12C(p,d)η′⊗11C reaction. Using coincidence measurements of the forward going deuterons, important for missing-mass spectroscopy, and decay protons emitted from the η′-mesic nuclei. for event selection will provide a high experimental sensitivity to observe η'-mesic nuclei. We will perform the measurements by combining the WASA detector system with the fragment separator FRS at GSI and also with the Super-FRS at FAIR in the future. The plan of the experiments and the present status are reported., Dec. 2020, 1643, 1, 012181, 012181, 10.1088/1742-6596/1643/1/012181
  • Refereed, Acta Physica Polonica B, Jagiellonian University, Spectroscopy of $\eta ^{\prime }$-mesic Nuclei with WASA at GSI/FAIR, Y.K. Tanaka; S. Bagchi; J. Benlliure; T. Dickel; V. Drozd; H. Ekawa; H. Fujioka; H. Geissel; F. Goldenbaum; C. Guo; E. Haettner; M.N. Harakeh; R.S. Hayano; S. Hirenzaki; C. Hornung; Y. Igarashi; N. Ikeno; K. Itahashi; M. Iwasaki; D. Jido; N. Kalantar-Nayestanaki; R. Kanungo; B. Kindler; R. Knöbel; D. Kostyleva; N. Kurz; N. Kuzminchuk; B. Lommel; Y. Ma; S.Y. Matsumoto; V. Metag; S. Minami; P. Moskal; I. Mukha; T. Nagae; H. Nagahiro; M. Nakagawa; H.J. Ong; H. Outa; S. Pietri; W.R. Plass; A. Prochazka; S. Purushothaman; C. Rappold; J. Ritman; J.L. Rodríguez-Sánchez; R. Ruber; O. Rundel; T.R. Saito; C. Scheidenberger; R. Sekiya; V. Serdyuk; H. Simon; B. Sitar; M. Skurzok; P. Strmen; B. Sun; I. Szarka; M. Takechi; I. Tanihata; S. Terashima; H. Weick; A. Yamamoto; J. Zhao, We plan to conduct an experimental search for η -mesic nuclei in order to investigate in-medium properties of the η meson. A 2.5 GeV proton beam is employed to produce η -mesic C nuclei with the C(p,d)η C reaction. Simultaneous measurements of the forward ejected deuterons and decay protons from η -mesic nuclei will allow us to achieve high experimental sensitivity. The experiment will be performed at GSI by making full use of the fragment separator FRS and the WASA detector system. The plan of this proposed experiment is described. 0 0 0 11 12 0⊗ 11 0, 2020, 51, 1, 39, 39, 10.5506/aphyspolb.51.39
  • Refereed, Acta Physica Polonica B, Jagiellonian University, Nuclear Deformation Effects to the Formation Cross Section of $\eta '$ Mesic Nucleus, S. Kinutani; M. Hirao; H. Nagahiro; S. Hirenzaki, We study the nuclear deformation effects to the formation spectrum of the η0-mesic nucleus theoretically. We find that the deformation effects could significantly change the spectrum shape and the effects should be considered appropriately., 2020, 51, 1, 333, 333, 10.5506/aphyspolb.51.333
  • 日本物理学会講演概要集(CD-ROM), Nuclear compression effects in the mesic nucleus formation reaction, 絹谷すずな; 平尾まい; 永廣秀子; 慈道大介; 比連崎悟, 2020, 75, 1
  • Not Refereed, CENTRAL EUROPEAN SYMPOSIUM ON THERMOPHYSICS 2019 (CEST), AIP Publishing, K̄ and nucleus system studied by 12C(K−, p) spectrum, Yudai Ichikawa; Junko Yamagata-Sekihara; Jung Keun Ahn; Yuya Akazawa; Kanae Aoki; Elena Bottta; Hiroyuki Ekawa; Petr Evtoukhovitch; Alessandro Feliciello; Manami Fujita; Toshiyuki Gogami; Shoichi Hasegawa; Tomoyuki Hasegawa; Shuhei Hayakawa; Tomonori Hayakawa; Satoru Hirenzaki; Ryotaro Honda; Kenji Hosomi; Ken’ichi Imai; Wooseung Jung; Shunsuke Kanatsuki; Shinhyung Kim; Sinji Kinbara; Kazuya Kobayashi; Jaeyong Lee; Simonetta Marcello; Koji Miwa; Taejin Moon; Tomofumi Nagae; Yoshiyuki Nakada; Manami Nakagawa; Takuya Nanamura; Megumi Naruki; Atsushi Sakaguchi; Hiroyuki Sako; Susumu Sato; Yuki Sasaki; Kotaro Shirotori; Hitoshi Sugimura; Toshiyuki Takahashi; Hirokazu Tamura; Kiyoshi Tanida; Zviadi Tsamalaidze; Mifuyu Ukai; Takeshi. O. Yamamoto, We have measured an inclusive missing-mass spectrum of the C-12(K-, p) reaction over wide energy region at the kaon incident momentum of 1.8 GeV/c at J-PARC K1.8 beam line. This measurement was carried out as a by-product of a pilot run of J-PARC E05 experiment, which searched for the Xi-hypernuclei via C-12(K-, K+) reaction. We have compared the observed missing-mass spectrum with a DWIA calculation to study the (K) over bar -nucleus interaction. In this comparison, we have changed the depth of both real and imaginary parts of the optical potential between the (K) over bar and nucleus. It is found that the observed spectrum is best reproduced by the calculation of the potential depth of V-0 similar to -80 MeV (real part) and W-0 similar to -40 MeV (imaginary part). On the other hand, we have observed a definitive excess around the deeply bound region B-K greater than or similar to 100 MeV. The excess cannot be explained by the any optical potential and quasi-free background reaction. It is well fitted with a Breit-Wigner function with a binding energy of 90 MeV and a width of 100 MeV, which can be interpreted as a deeply bound Lambda(1405) nucleus., 2019, 2130, 10.1063/1.5118414
  • 日本物理学会講演概要集(CD-ROM), (p,d)反応によるη(958)中間子原子核生成における核変形の効果, 絹谷すずな; 平尾まい; 永廣秀子; 比連崎悟, 2019, 74, 1
  • 日本物理学会講演概要集(CD-ROM), K中間子原子エネルギースペクトルにおける斥力シフトの起源, 飯澤優太朗; 飯澤優太朗; 慈道大介; 慈道大介; 池野なつ美; 山縣淳子; 比連崎悟, 2019, 74, 1
  • 日本物理学会講演概要集(CD-ROM), 反陽子原子からの中間子-原子核束縛状態生成, 平尾まい; 絹谷すずな; 永廣秀子; 板橋健太; 比連崎悟, 2019, 74, 2
  • 日本物理学会講演概要集(CD-ROM), 相対論的平均場原子核理論によるη’中間子原子核の質量スペクトル, 慈道大介; 桝谷花世; 比連崎悟, 2019, 74, 2
  • 日本物理学会講演概要集(CD-ROM), K中間子原子における斥力シフトと非線形光学ポテンシャル, 飯澤優太朗; 飯澤優太朗; 慈道大介; 慈道大介; 池野なつ美; 山縣淳子; 比連崎悟, 2019, 74, 2
  • 日本物理学会講演概要集(CD-ROM), 核変形効果を考慮したη(958)中間子原子核の(p,d)反応による生成スペクトル, 絹谷すずな; 平尾まい; 永廣秀子; 慈道大介; 比連崎悟, 2019, 74, 2
  • 日本物理学会講演概要集(CD-ROM), ダブルπ中間子原子の構造, 谷明里; 池野なつ美; 池野なつ美; 比連崎悟; 慈道大介; 永廣秀子; 永廣秀子; 藤岡宏之; 板橋健太, 2019, 74, 2
  • Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan, Pion wavefunction renormalization effects to the structure and formation of deeply bound pionic atoms, Ikeno Natsumi; Aoki Kenji; Jido Daisuke; Hirenzaki Satoru, 2018, 73, 0, 292, 292, 10.11316/jpsgaiyo.73.1.0_292
  • 日本物理学会講演概要集(CD-ROM), 理化学研究所における(d,3He)反応を用いたパイ中間子原子の分光実験, 西隆博; AHN DeukSoon; BERG Georg P.A.; 堂園昌伯; 藤岡宏之; 福田直樹; 福西暢尚; GEISSEL Hans; HAETTNER Emma; 橋本直; 早野龍五; 比連崎悟; 堀井啓志; 池野なつ美; 稲辺尚人; 板橋健太; 伊藤聖; 岩崎雅彦; 亀田大輔; 川瀬頌一郎; 木佐森慶一; 清川裕; 久保敏幸; 日下健祐; 松原礼明; 松下昌史; 道正新一郎; 三木謙二郎; 三嶋剛; 宮裕之; 村井大地; 村上洋平; 永廣秀子; 中村祐喜; 新倉潤; 野地俊平; 大河内公太; 大田晋輔; 坂本成彦; 関口仁子; 鈴木宏; 鈴木謙; 高木基伸; 竹田浩之; 田中良樹; 轟孔一; 塚田暁; 上坂友洋; 渡辺珠以; WEICK Helmut; 山田裕之; 山上大貴; 柳澤善行; 吉田光一, 2018, 73, 1
  • Not Refereed, Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan, η' mesonic nuclei in a relativistic mean-field theory, Masutani Hanayo; Jido Daisuke; Satoru Hirenzaki, 2017, 72, 0, 180, 180, 10.11316/jpsgaiyo.72.2.0_180
  • Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan, Effects of higher partial waves to pion wavefunction renormalization in nuclear medium, Aoki K.; Jido D.; Ikeno N.; Hirenzaki S., 2017, 72, 0, 181, 181, 10.11316/jpsgaiyo.72.2.0_181
  • Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan, η-nucleus interaction from the d + d reaction around the η production threshold, Ikeno N.; Nagahiro H.; Jido D.; Hirenzaki S.,

    η中間子原子核生成を目指して、COSY(ドイツ)において2つの重陽子の衝突実験が行われた。η中間子の生成閾値付近で、3He+N+π、の終状態が観測され、η中間子原子核生成断面積の上限値が報告されている。本講演では、この実験結果を理論的に解析し、η中間子と原子核(α 粒子)の間の相互作用についてどのような新しい情報(制限)が得られるかを報告する予定である。

    , 2017, 72, 0, 209, 209, 10.11316/jpsgaiyo.72.1.0_209
  • Acta Physica Polonica A, Pion-Nucleon Sigma Term by Deeply Bound Pionic Atoms, N. Ikeno; T. Nishi; K. Itahashi; N. Nose-Togawa; A. Tani; S. Hirenzaki, We report the results of research on the sensitivity of the observables of the deeply bound pionic atom to the pion-nucleon sigma term σπN. We calculate the uncertainties of determining the value of sigmaπN with the accurate data of the deeply bound pionic atoms expected to be obtained at the RI Beam Factory (RIBF), RIKEN. We find that the energy gap of the 1s and 2p pionic states, (Bπ(1s) - Bπ(2p)), and the width of the 1s state for the lighter Sn isotope are expected to be important observables to precisely determine the σπN value by taking into account the expected errors of the experiments., Sep. 2022, 142, 3, 342, 346, 10.12693/APhysPolA.142.342

Books etc

  • 中間子原子の物理 : 強い力の支配する世界, 共立出版, 比連崎, 悟, Mar. 2017, vi, 171p, 図版2枚, 1-171, False, 9784320035355
  • Theoretical study of Deeply Bound Pionic Atoms with an Introduction to Mesonic Nuclei, Springer, S. Hirenzaki; N. Ikeno, One chapter in section "Mesonic- and Hypernuclei" in Handbook of Nuclear Physics, 17 Aug. 2022, 10.1007/978-981-15-8818-1_35-1, 9789811588181

Presentations

  • Invited oral presentation, 28 Dec. 2023, 30 Dec. 2023
  • Oral presentation, 05 Jun. 2023, 09 Jun. 2023
  • Oral presentation, 05 Jun. 2023, 09 Jun. 2023
  • Invited oral presentation, 06 Feb. 2023, 06 Feb. 2023
  • 山縣淳子; 比連崎悟, 日本物理学会第77回年次大会, K 中間子ヘリウム原子の高精度測定から考察する K 中間子-原子核 相互作用, Oral presentation, 17 Mar. 2022, 15 Mar. 2022, 19 Mar. 2022
  • Satoru Hirenzaki, Reimei workshop 'Hadrons in dense matter at J-PARC', Recent topics on pi, K, eta(958) mesonic bound states, Invited oral presentation, 23 Feb. 2022, 21 Feb. 2022, 23 Feb. 2022
  • 池野なつ美; 比連崎悟, 日本物理学会2021年秋季大会(素核宇分野), 深く束縛されたπ中間子原子観測量の πN σ項 依存性, Oral presentation, 16 Sep. 2021, 14 Sep. 2021, 17 Sep. 2021
  • 野瀬-外川直子; 池野なつ美; 山縣淳子; 比連崎悟, 日本物理学会2021年秋季大会(素核宇分野), 中間子原子および中間子原子核における残留相互作用効果, Oral presentation, 16 Sep. 2021, 14 Sep. 2021, 17 Sep. 2021
  • Satoru Hirenzaki, APCTP(Asia Pacific Center for Theoretical Physics) Focus Program in Nuclear Physics 2021 Part I: Hadron properties in a nuclear medium from the quark and gluon degrees of freedom, Structure and formation of mesic atoms and mesic nuclei, Invited oral presentation, 15 Jul. 2021, 14 Jul. 2021, 16 Jul. 2021
  • Satoru Hirenzaki, Workshop series on Nuclear Physics-2, Hadrons in nuclear matter, Structure and Formation of Meson-Nucleus bound systems, Invited oral presentation, 13 Dec. 2019, 13 Dec. 2019, 13 Dec. 2019
  • Satoru Hirenzaki, Workshop on Chiral and heavy quark symmetries in quark-hadron physics, Formation of Mesonic Atoms and Mesonic Nuclei, Invited oral presentation, 25 Aug. 2019, 25 Aug. 2019, 25 Aug. 2019
  • Satoru Hirenzaki, 3rd Jagiellonian Symposium on Fundamental and Applied Subatomic Physics, Recent topics on Mesic atoms and Mesic nuclei, Invited oral presentation, 24 Jun. 2019, 23 Jun. 2019, 30 Jun. 2019
  • Satoru Hirenzaki, International Workshop on “Hadron structure and interaction in dense matter”, Meson Properties at Finite Density from Meson-Nucleus Systems, Invited oral presentation, 11 Nov. 2018, 11 Nov. 2018, 12 Nov. 2018
  • S. Hirenzaki, J-PARCエネルギー領域重イオン衝突のダイナミクス, Meson Properties at Finite Density from Meson-Nucleus Systems, Invited oral presentation, 11 Sep. 2017, 11 Sep. 2017, 11 Sep. 2017
  • S. Hirenzaki, 2nd Jagiellonian Symposium On Fundamental and Applied Subatomic Physics, eta-nucleus interaction from the d+d reaction around the eta production threshold, Invited oral presentation, 06 Jun. 2017, 04 Jun. 2017, 11 Jun. 2017
  • Satoru Hirenzaki, International workshop on J-PARC hadron physics 2023 (J-PARC Hadron2023), The pion-nucleon sigma term by pionic atoms and the kaon-nucleus interaction by kaonic He atoms, 12 Sep. 2023, 12 Sep. 2023, 15 Sep. 2023

Research Projects

  • Apr. 2023, Mar. 2027, 23K03417, Principal investigator
  • Grant-in-Aid for Scientific Research (C), Apr. 2016, Mar. 2021, 16K05355, Principal investigator, Accurate studies of the meson properties in the nuclear medium and symmetry of the strong interaction, Hirenzaki Satoru, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Nara Women's University, 4420000, 3400000, 1020000, The purpose of the present project is to investigate the meson properties in the nucleus as accurately as possible and to deduce the new information on the strong interaction symmetry at finite density from them. In this project, we made collaborations for researches on deeply bound pionic atoms at RIKEN, eta and eta(958) mesic nucleus at COSY and GSI in Germany, and kaonic nucleus at JPARC, and we obtained new information on properties of each meson. Based on the new information, we are trying to deepen our understandings of the strong interaction symmetry., kaken
  • Grant-in-Aid for Scientific Research (C), Apr. 2012, Mar. 2016, 24540274, Principal investigator, Aspects of symmetry at finite nuclear density by meson-nucleus systems, Hirenzaki Satoru; JIDO Daisuke; NAGAHIRO Hideko, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Nara Women's University, 5070000, 3900000, 1170000, The final goal of this research is to investigate the aspects of the symmetry of the strong interaction by knowing the properties of various mesons at finite density through meson-nucleus systems. The pattern of the symmetry breaking and its restoration are considered to be understood by the relations between various phenomena and properties of various mesons. This kind of study is unique and complementary to that of the high energy heavy ion collisions. The main results of this project are the developments of the theoretical studies of (i) the structure and formation of eta(958) meson-nucleus bound states based on eta(958) properties at finite density, (ii) the high precision spectroscopy of the deeply bound pionic atoms, and (iii) the properties of vector mesons at finite density and observables., url;kaken

Ⅲ.社会連携活動実績

1.公的団体の委員等(審議会、国家試験委員、他大学評価委員,科研費審査委員等)

  • Apr. 2021, Mar. 2022
  • Apr. 2019, Mar. 2021
  • Apr. 2019, Mar. 2021
  • Apr. 2011, Mar. 2012
  • Oct. 2009, Sep. 2010, Society
  • Apr. 2022, Mar. 2023


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