HaloWeek'26 - nuclei at and beyond the driplines -

8 Jun 2026, 09:00 → 12 Jun 2026, 17:00 Asia/Tokyo

Science Seminar House (Kyoto University)

Takashi Nakamura (Tokyo Institute of Technology)

The famous moss garden in Saihoji "ZEN" Temple (world heritage) taken by T. N

 

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HaloWeek'26 - nuclei at and beyond the driplines - will take place from June 8 to 12, 2026 at Kyoto University, in Japan's  former historic capital, Kyoto. The workshop will focus on the latest forefront experimental and theoretical developments in the physics of weakly-bound and unbound nuclei, and explorations of the drip lines and beyond.

Following the previous successful meetings in Bergen, Norway (2022) and Gothenburg, Sweden (2024), HaloWeek’26 will bring together 40-60 participants to meet and discuss the most recent progress and share future perspectives of this field.

NOTE: As the venue has limited capacity, participation is by invitation only.

 

The topics of the workshop will include:

• The physics of Halo states

• Experimental and theoretical progress in the physics of weakly-bound and unbound states in nuclei, atoms, and molecules.

• Pure neutron systems

• Reaction theory

• Universal aspects and analogies

 

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The conference is jointly organized by 

• Grant-in-Aid for Transformative Research Areas (A) (Japan MEXT kakenhi program : 25A203) : Quantum Matter Science in the Universe Opened Up by Precise Numerical Calculations
• Research Center for Nuclear Physics, the University of Osaka
• Grant-in-Aid for Specially Promoted Research (Japan MEXT kakenhi program : 24H00006) : Study of pure-neutron nuclei explored by innovative neutron detectors
• Graduate School of Science, Kyoto University

 

                        

 

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The conference is supported by 

• the Extreme Matter Institute EMMI
• Helmholtz Institute Mainz
• Grant-in-Aid for Transformative Research Areas (A) (Japan MEXT kakenhi program : 25A203) : Quantum Matter Science in the Universe Opened Up by Precise Numerical Calculations
• Research Center for Nuclear Physics, the University of Osaka
• Grant-in-Aid for Specially Promoted Research (Japan MEXT kakenhi program : 24H00006) : Study of pure-neutron nuclei explored by innovative neutron detectors

 

               

Access-map.pdf

hotel-map-kyoto2.pdf

map-campus-venue.pdf

map_central_kyoto.pdf

program_haloweek_v3.4.2.pdf

program_haloweek_v3.4.pdf

Monday 8 June

10:30 → 10:40 Opening: Welcome Address

Conveners: Kouichi Hagino (Department of Physics, Kyoto University), Takashi Nakamura (Institute of Science Tokyo)

10:30 Welcome Address

Speakers: Kouichi Hagino (Department of Physics, Kyoto University), Takashi Nakamura (Tokyo Institute of Technology), Takashi Nakamura (Institute of Science Tokyo)

10:40 → 12:40 Session 1

Convener: Takashi Nakamura (Institute of Science Tokyo)

10:40 Charge, proton, and neutron size of exotic nuclei

Speaker: Prof. Witold Nazarewicz (MSU)

11:10 dineutron cluster structures of 8He

Speaker: Yoshiko Kanada (Kyoto University)

11:40 In-beam gamma-ray spectroscopy around 100Sn

Speaker: Pieter Doornenbal (RIKEN)

12:10 Discussion

12:40 → 14:10 Lunch

14:10 → 15:40 Session 2

Convener: Nobuyuki Kobayashi (RCNP, Osaka University)

14:10 Coulomb Breakup of Medium-Mass Halo Nuclei at FRIB

Speaker: Dr Aldric Revel (FRIB/MSU)

14:40 Proton halos revealed by precision mass measurements in CSRe/Lanzhou

Speaker: yuhu zhang (institute of modern physics. chinese academy of sciences, lanzhou 730000 China)

15:10 Masses of the Ni isotopes in the vicinity of the proton dripline

Speaker: Dr Shutaro Hanai (Institute of Science Tokyo)

15:40 → 16:10 Break

16:10 → 17:40 Session 3

Convener: Yosuke KONDO (RIKEN Nishina Center)

16:10 Radii and Decay Dynamics of Particle-Emitters

Speaker: Simin Wang

16:40 Search for Halo Structure in Isomeric States

Speaker: Mitsunori Fukuda (Department of Physics, Osaka Univeristy)

17:10 Discussion

Tuesday 9 June

09:00 → 10:20 Session 4

Convener: Carlos Carlos Bertulani (Texas A&M University-Commerce)

09:00 Intruder configurations and shape coexistence in halo structure

Speaker: Prof. Mark Caprio (University of Notre Dame)

09:30 Towards a short-range EFT for deformed halo nuclei

Speaker: Live-Palm Kubushishi (Ohio University)

10:00 Two-neutron distribution of the triton from pionless EFT

Speaker: Tanja Kirchner (TU Darmstadt)

10:20 → 10:50 Break

10:50 → 12:40 Session 5

Convener: Gaute Hagen (Oak Ridge National Laboratory)

10:50 Two-neutron halo nuclei in effective field theory

Speaker: Dam Son (University of Chicago)

11:20 Shell structure and nuclear dynamics in neutron-rich nuclei

Speaker: Francesca Bonaiti (Facility for Rare Isotope Beams and Oak Ridge National Laboratory)

11:50 Tow-neutron halo structure of 14Be studied by its Coulomb breakup

Speaker: Yuma Osawa (Department of Physics., Institute of Science Tokyo)

12:10 Discussion

12:40 → 14:10 Lunch

14:10 → 15:10 Session 6

Convener: Naoyuki Itagaki (Osaka Metropolitan University)

14:10 Few-body universality beyond two neutron halo

Speaker: Tobias Frederico (Instituto Tecnologico de Aeronautica)

Frederico_haloweek26.pdf

14:40 Unveiling new features in drip-line nuclei using direct reactions

Speaker: Prof. Ritu Kanungo (TRIUMF)

15:10 → 15:40 Break

15:40 → 17:30 Session 7

Convener: Isao Tanihata (Beihnag University and RCNP, Osaka Universiry)

15:40 Reaction cross sections for dripline nuclei on a proton target

Speaker: Tetsuaki Moriguchi (University of Tsukuba)

16:10 Can one deduce the charge radii of rare isotopes using hadronic probe?

Speaker: Dr JiChao Zhang (RCNP)

16:40 Short-distance production of multi-neutron systems

Speaker: Timothy George Backert (Technische Universität Darmstadt)

17:00 Discussion

Wednesday 10 June

09:00 → 10:20 Session 8

Convener: Emiko Hiyama (RIKEN)

09:00 Five-body 4He atomic systems

Speaker: Jaume Carbonell (IJCLab Université Paris Scalay)

09:30 Measurement of the matter radius of 132Sn using proton elastic scattering at 200 MeV/nucleon

Speaker: Yuto Hijikata (RIKEN)

10:00 Electromagnetic response functions of neutron-rich nuclei

Speaker: Miriam El Batchy (Johannes Gutenberg University)

10:20 → 10:50 Break

10:50 → 12:20 Session 9

10:50 Structure-driven microscopic optical potentials for studies of nuclei near the dripline

Speaker: Grigor Sargsyan (Facility for Rare Isotope Beams / Michigan State University)

11:20 Structure and stability of four-neutron halo nuclei

Speaker: Dr Rimantas Lazauskas (IPHC)

11:50 Discussion

12:20 → 13:50 Lunch

13:50 → 16:50 Session 10: Discussion

Thursday 11 June

09:00 → 10:30 Session 11

Convener: Navin ALAHARI (Tokyo Institute of technology)

09:00 Halo Nuclei from Ab Initio Nuclear Theory

Speaker: Dr Petr Navratil (TRIUMF)

09:30 Direct transfer to narrow unbound states as a probe of the oxygen dripline

Speaker: Dr Charlie James Paxman (GANIL)

10:00 Transfer reactions on exotic Li isotopes

Speaker: Dr Gregory Potel (University of Seville)

10:30 → 11:00 Break

11:00 → 13:00 Session 12

Convener: Juzo ZENIHIRO (Department of Physics, Kyoto University)

11:00 Beyond the neutron dripline: Structure and Correlations

Speaker: Nigel Orr (LPC-Caen)

11:30 Particle emission beyond the proton dripline

Speaker: Marek Pfutzner (University of Warsaw)

12:00 Few-body systems near unitarity

Speaker: Sebastian Koenig (NC State University)

12:30 Discussion

13:00 → 14:30 Lunch

14:30 → 15:30 Session 13

Convener: Jiangming Yao

14:30 Reaction studies towards the driplines with R3B setup

Speaker: Dr Valerii Panin (GSI)

15:00 Multimodal superfluidity in neutron-rich nuclei

Speaker: Prof. Dean Lee (MSU)

15:30 → 16:00 Break

16:00 → 17:30 Session 14

Convener: Dr Yuki Kubota (RIKEN Nishina Center)

16:00 The dripline in calcium isotopes from a new chiral interaction

Speaker: Gaute Hagen (Oak Ridge National Laboratory)

16:30 Study of neutron-deficient nuclei for probing 3He clustering and quenching of spectroscopic factors towards drip line

Speaker: Dr Olivier Sorlin (GSI)

17:00 Discussion

18:00 → 20:00 Banquet : Japanese Izakaya-style restaurant, "Taru-hachi"

The banquet place is a Japanese Izakaya-style restaurant, "Taru-hachi", within walking distance of the venue.
https://maps.app.goo.gl/CWkzFeNuMpQPakau8

Friday 12 June

09:00 → 10:20 Session 15

09:00 Electromagnetic response of open-shell nuclei from coupled-cluster theory

Speaker: Francesco Marino (JGU Mainz)

09:30 Exploring the strucutre of 11Li through (t,p) reactions

Speaker: Mr Daniel Fernandez Ruiz (IEM-CSIC)

09:50 The Coulomb effect on neutron drip line and beyond

Speaker: Kenta Hagihara (University of Tsukuba)

10:20 → 10:50 Break

10:50 → 11:50 Session 16

Convener: Kouichi Hagino (Department of Physics, Kyoto University)

10:50 Neutron correlations and multi-neutron systems

Speaker: Dr Zaihong Yang (Peking University)

11:20 Progress in describing three- and four-body breakup reactions

Speaker: Prof. Kazuyuki Ogata (Department of Physics, Kyushu University)

11:50 → 12:00 Closing: Concluding Remarks

Convener: Gaute Hagen (Oak Ridge National Laboratory)