SLIDE 1
青木慎也教授 還暦記念研究会 2019年12月20日@ YITP
場の量子論における非摂動論的手法と素粒子物理学への応用 初田哲男（理研iTHEMS)
バリオン間相互作用の現在
- 理論、計算、実験、観測 ‒
- - - PowerPoint PPT Presentation
- - - PowerPoint PPT Presentation
- 2019 12 20 @ YITP
SLIDE 2
SLIDE 3
Plan of this Talk
- 1. 現象論的核力
- 2. バリオン間相互作用のQCD計算
- 3. LHC実験での検証
- 4. 重力波観測(LIGO/Virgo)とX線観測(NICER)
- 5. まとめ
SLIDE 4
2p, 3p, ...
Ø Multi-pion
Taketani et al. (1950-)
Ø One-pion exchange
Yukawa (1935)
p
repulsive core
Ø Repulsive core
Jastrow (1951) Nambu (1957)
r “現象論的核力”の歴史
SLIDE 5
Ø EFT
Weinberg (1990)
r Ø 高精度核力 (1990-)
Bonn group Nijmegen group Argonne group Ehime group Funabashi group Kyoto group …
現象論的核力の現在
SLIDE 6
高精度現象論的核力と格子QCD
“high precision” NN interactions # of parameters CD Bonn (p space) 38 AV18 (r space) 40 EFT in N3LO (nπ+contact) 24 Ø NN int.: about 4500 np and pp scatt. data Ø NNN, YN, YY : data very limited Ø YNN, YYN, YYY : data vey very limited
- R. Machleidt, arXiv:0704.0807 [nucl-th]
QCD has only four parameters : mu, md, ms, αs(μ)
- N. Ishii, S.Aoki and T. Hatsuda,
- Phys. Rev. Lett. 99 (2007)
SLIDE 7
SLIDE 8
京速シンポ＠つくば 2006.4.05
SLIDE 9
格子QCDによる 核力計算結果 の初公開 （Lattice2006)
SLIDE 10
格子QCDによる核力の初論文 (2007) Received 11.28.2006 à accepted 7.12.2007
SLIDE 11
HAL QCD Collaboration (2009-)
(KEK)
- T. Aoyama
(RIKEN)
- T. Doi, T. M. Doi, S. Gongyo,
- T. Hatsuda, T. Iritani, T. Sugiura
(Nihon)
- T. Inoue
(YITP)
- Y. Akahoshi, S. Aoki,
- T. Miyamato, K. Sasaki
(RCNP)
- Y. Ikeda, N. Ishii, K. Murano,
- H. Nemura
(Birjand)
- F. Etminan
18
As of today, 22 original papers (77 papers including proceedings)
- Baryon-baryon interactions
- Meson-Meson interactions
- Meson-Baryon interactions
- Exotic hadrons
- Thee-body force
- Phenomenological applications
- Theoretical developments
SLIDE 12
HAL QCD Method
Two-baryon observables
（phase shift, binding energy)
Iritani+ [HAL QCD Coll.], JHEP 1610 (2016) 101 PRD 96 (2017) 034521 PRD 99 (2019) 014514 JHEP 1903 (2019) 007
R(τ)
Lattice QCD
r
U(r,r’)
Luescher Method
理論の進展
SLIDE 13
京コンピュータによる大規模計算
- Small lattice spacing: a = 0.085 fm
- Large lattice volume: L = 8.1 fm
- (2+1)-flavor dynamical quarks
Mπ = 146 MeV, MK = 525 MeV, MN = 964 MeV K computer (11 Pflops) FY2011-2019
SLIDE 14
- T. Inoue+ [HAL QCD Coll.], AIP Conference Proceedings 2130 (2019)
8 x 8 = 27 + 8s + 1 + 10* + 10 + 8a
バリオン相互作用のフレーバー依存性
SLIDE 15
- T. Inoue+ [HAL QCD Coll.], AIP Conference Proceedings 2130 (2019)
8 x 8 = 27 + 8s + 1 + 10* + 10 + 8a
バリオン相互作用のフレーバー依存性
BB interactions at short distance: (i) flavor dependent (ii) compatible with constituent quark model
c.f. M. Oka, K. Shimizu and K. Yazaki,
- Prog. Theor. Phys. Suppl. 137 (2000) 1-20
SLIDE 16
S=-2 systems
SLIDE 17
Coupled Channel S=-2 system (1S0) I=0, JP=0+
- K. Sasaki+ [HAL QCD Coll.]
arXiv: 1912.08630 [hep-lat]
Large NΞ attraction Small ΛΛ attraction Short-range NΞ-ΛΛ coupling Short-range NΞ-ΛΛ coupling
SLIDE 18
Coupled Channel S=-2 system (1S0)
- K. Sasaki+ [HAL QCD Coll.]
arXiv: 1912.08630 [hep-lat]
I=0, JP=0+ ・ Small attraction between Λ and Λ ・ No bound H-dibaryon ・ Large attraction between N and Ξ
SLIDE 19
Femtoscopic correlation analysis of NΞ at LHC
ALICE, Coll., Phys.Rev.Lett. 123 (2019)
ALICE
p Ξ-
SLIDE 20
ALICE Coll., Phys. Lett. B797 (2019)
Femtoscopic correlation analysis of ΛΛ at LHC
Effective range (fm)
- (Scattering length)-1 (fm-1)
- K. Sasaki+ [HAL QCD Coll.]
arXiv: 1912.08630 [hep-lat]
SLIDE 21
S=-3 and S=-6 systems
SLIDE 22
Gongyo+ [HAL QCD Coll.], PRL 120 (2018) 212001
S=-3
Iritani+ [HAL QCD Coll.], Phys.Lett. B792 (2019) 284
S=-6
ΩΩ (1S0) NΩ (5S3)
NΩ (5S2) ΩΩ (1S0) NΩ (5S2) ΩΩ (1S0)
SLIDE 23
ユニタリー領域に新しいダイバリオン?
Gongyo+ [HAL QCD Coll.], PRL 120 (2018) 212001 Iritani+ [HAL QCD Coll.], PLB 792 (2019) 284
RHIC, LHC J-PARC, FAIR
24
SLIDE 24
- Proof of concept and realistic simulations
- LQCD prediction vs. experimental data
2011-2019 : past supercomputer(s), e.g. “K” (11 Pflops)
- Precision data for S=0, -1
- Spin-orbit force, three body force, …
2021- : new supercomputer(s), e.g. FUGAKU (100 x “K”)
SLIDE 25
SLIDE 26
重力波観測とX線観測 （NICERの衝撃）
Fig：G. Baym, S. Furusawa, T. Hatsuda, T. Kojo, H. Togashi, Astrophysical Journal 885, 42 (2019)
GW170817
GW170817
NICER on ISS
J0030+0451
強い 3体力？？
SLIDE 27