few-body systems in low energy effective theory

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www.kyutech.ac.j Few-Body Systems in Few-Body Systems in Low Energy Effective Low Energy Effective Theory Theory 鎌鎌鎌鎌 鎌鎌鎌鎌鎌鎌鎌 () 鎌鎌鎌鎌 鎌鎌鎌鎌鎌鎌鎌 () E. Epel E. Epel aum aum Juelich Juelich 鎌鎌鎌+Bonn 鎌鎌鎌+Bonn 鎌鎌鎌鎌W. Glöckle W. Glöckle Bochum Bochum 鎌鎌鎌鎌Ulf-G. Meissner Ulf-G. Meissner Bonn Bonn 鎌鎌鎌鎌研研研 KEK 研研研研 研研研研研研研研研研研研研 『・』 研研研研研研研研研研研研研 研研研研研研研研研 2007 研 11 研 19 研 ( 研 ) 11 研 21 研 ( 研 ) KEK 4 研研 1 研研研研研研研研

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Few-Body Systems in Low Energy Effective Theory. 鎌田裕之(九州工業大学) E. Epel b aum ( Juelich 研究所+Bonn大学) W. Glöckle ( Bochum 大学) Ulf-G. Meissner ( Bonn 大学). KEK研究会 『 原子核・ハドロン物理:横断研究会 』 高エネルギー加速器研究機構、素粒子原子核研究所 2007 年 11 月 19 日 ( 月 ) ~ 11 月 21 日 ( 木 ) KEK 4 号館 1 階セミナーホール. - PowerPoint PPT Presentation

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Page 1: Few-Body Systems in Low Energy Effective Theory

www.kyutech.ac.jp

Few-Body Systems in Low Few-Body Systems in Low Energy Effective Theory Energy Effective Theory

Few-Body Systems in Low Few-Body Systems in Low Energy Effective Theory Energy Effective Theory

鎌田裕之(九州工業大学)鎌田裕之(九州工業大学)E. EpelE. Epel bb aumaum (( JuelichJuelich 研究所+Bonn大研究所+Bonn大

学)学)W. GlöckleW. Glöckle (( BochumBochum 大学)大学)

Ulf-G. MeissnerUlf-G. Meissner (( BonnBonn 大学)大学)KEK研究会

『原子核・ハドロン物理:横断研究会』高エネルギー加速器研究機構、素粒子原子核研究所2007年 11月 19日 (月 )~ 11月 21日 (木 )

KEK  4号館 1階セミナーホール

Page 2: Few-Body Systems in Low Energy Effective Theory

Basic Yukawa formalism

Meson theoretical realistic formalism

★Consistence with QCD★Unification of 2NF and 3NF

★Applicability

   2NF1. Bonn Potential2. Argonne Potential3. Nijmegen Potential 3NF1. Fujita-Miyazawa2. Urbana IX3. Tucson-Melbourn

New generation formalism

Chiral Perturbation theoretical formalim

Chiral Perturbation theoretical formalim

Page 3: Few-Body Systems in Low Energy Effective Theory

www.kyutech.ac.jp Line upLine upLine upLine up

Feshbach-Bloch-Horowitzの方法

Low-Momentum NN Interaction

Okubo 方程式を解く Okubo理論を場の量子論に適用する カイラル摂動理論 3 体力& 4 体力 Summary & Outlook

Page 4: Few-Body Systems in Low Energy Effective Theory

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Low-Momentum NN Low-Momentum NN InteractionInteractionLow-Momentum NN Low-Momentum NN InteractionInteraction

 

-  Tutorial introduction -

EffectiveEffective    TheoryTheoryEffectiveEffective    TheoryTheory

Feshbach-Bloch-HorowitzFeshbach-Bloch-Horowitz の方法の方法

Okubo 理論:S.Okubo,PTP12,(1954)603

B&H, NP8,(1958)91.

Page 5: Few-Body Systems in Low Energy Effective Theory

www.kyutech.ac.jp Feshbach-Bloch-HorowitzFeshbach-Bloch-Horowitz の方法の方法Feshbach-Bloch-HorowitzFeshbach-Bloch-Horowitz の方法の方法

B&H, NP8,(1958)91.

V eff= V eff (E)

        QP

λ λ

Page 6: Few-Body Systems in Low Energy Effective Theory

www.kyutech.ac.jp Okubo理論と散乱振幅Okubo理論と散乱振幅Okubo理論と散乱振幅Okubo理論と散乱振幅Low-Momentum NN Low-Momentum NN InteractionInteractionLow-Momentum NN Low-Momentum NN InteractionInteraction

Page 7: Few-Body Systems in Low Energy Effective Theory

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Page 8: Few-Body Systems in Low Energy Effective Theory

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Aについての非線形方程式

Page 9: Few-Body Systems in Low Energy Effective Theory

www.kyutech.ac.jp OO kubokubo 方程式を解く 方程式を解く (I)(I)OO kubokubo 方程式を解く 方程式を解く (I)(I)

Page 10: Few-Body Systems in Low Energy Effective Theory

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Aについての線形方程式

Page 11: Few-Body Systems in Low Energy Effective Theory

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Binding energies of Binding energies of 33H H and and 44HeHeBinding energies of Binding energies of 33H H and and 44HeHe

Λ→Λ→

S. Fujii, E. Epelbaum, H. Kamada, R. Okamoto, K. Suzuki, W. Glöckle ,Physical Review C 70, 024003 (2004)

Page 12: Few-Body Systems in Low Energy Effective Theory

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Binding Energy of Binding Energy of 33 H H Binding Energy of Binding Energy of 33 H H

Potential No 3NF With 3NF

CDBONNNijmegen INjimegen IINijmegen 93AV-18

 8.013 7.741 7.659 7.668 7.628

  8.48  8.48  8.48  8.48  8.48

Exp.   8.48

Eb [MeV]

Page 13: Few-Body Systems in Low Energy Effective Theory

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Binding Energy of Binding Energy of 33 He He Binding Energy of Binding Energy of 33 He He

Potential No 3NF

CDBONNNijmegen INjimegen IINijmegen 93AV-18

 7.288 7.083 7.008 7.014 6.917

 

Exp.  7.718

  

Eb [MeV]

Page 14: Few-Body Systems in Low Energy Effective Theory

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Binding Energy of αparticle Binding Energy of αparticle Binding Energy of αparticle Binding Energy of αparticle

Eb [MeV]Potential No 3NF With

3NF

CDBONNNijmegen INjimegen IINijmegen 93AV-18

 26.26 24.98 24.56 24.53 24.25

 28.40 28.60 28.56  28.36

Exp.  28.30

Page 15: Few-Body Systems in Low Energy Effective Theory

www.kyutech.ac.jp OO kubokubo 方程式を解く 方程式を解く (II)(II)OO kubokubo 方程式を解く 方程式を解く (II)(II)

ポイント:ベキ展開によって漸化式を求める。

Page 16: Few-Body Systems in Low Energy Effective Theory

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核子間相互作用核子間相互作用核子間相互作用核子間相互作用

Page 17: Few-Body Systems in Low Energy Effective Theory

www.kyutech.ac.jp Okubo理論を場の量子論に適用するOkubo理論を場の量子論に適用するOkubo理論を場の量子論に適用するOkubo理論を場の量子論に適用する

フォック空間 φ : π 中間子が現れない( on-mass-shell)→Pψ : π 中間子の現れる ( 1個、2個、3

個・・・)ψ = ψ (1)+ ψ (2) + ψ (3)・・・     

  → Q

0 π: NNのみ

。。。

1 π 2 π

ψ (1) ψ ( 2 ) ψ (*)φ

Page 18: Few-Body Systems in Low Energy Effective Theory

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Page 19: Few-Body Systems in Low Energy Effective Theory

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Page 20: Few-Body Systems in Low Energy Effective Theory

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Page 21: Few-Body Systems in Low Energy Effective Theory

www.kyutech.ac.jp Okubo理論を場の量子論に適用するOkubo理論を場の量子論に適用するOkubo理論を場の量子論に適用するOkubo理論を場の量子論に適用する

フォック空間 φ : π 中間子が現れない( on-mass-shell)ψ : π 中間子の現れる ( 1個、2個、3個・・・)ψ = ψ (1)+ ψ (2) + ψ (3)・・・ Full H amiltonianΗ =H0+HI

H0=HN0 + Hπ0       HN0=-N† (∇2 /2m)N Hπ0= ( 1/2)π 2+( 1/2) (∇ π ) 2 +( 1/2)mπ

2 π 2

N ( π ) : 核子( π 中間子)の場の演算子 相互作用HIは、例えばカイラル・ラグランジア

ンを用いる

Page 22: Few-Body Systems in Low Energy Effective Theory

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Chiral Perturbation TheoryChiral Perturbation TheoryChiral Perturbation TheoryChiral Perturbation Theory

Chirality :Symmetry of massless QCD Lagrangian: SU(N f )L× SU(N f )R×U(1)V×U(1)A

Nambu - Goldstone - Weinberg   Realization :Mechanism of the sponteneous breaking symmetry:

SU(2)L× SU(2)R  ~  SU(2)A× SU(2)V  ⇒   SU(2)V

SU(2)A× SU(2)V ~ SO ( 4 )   Dim[SO(4)] =4>3 πfieldsNonlinear realization :π→π’ =f( π ;g)→→→

Page 23: Few-Body Systems in Low Energy Effective Theory

www.kyutech.ac.jp 相互作用H相互作用HII相互作用H相互作用HII

Low Energy Coefficient: CT,CS,C1,C2,C4

Page 24: Few-Body Systems in Low Energy Effective Theory

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Low Energy Coefficient: D1,D2,C1~ C7

Page 25: Few-Body Systems in Low Energy Effective Theory

Okubo 方程式Okubo 方程式

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Yukawaforce: 1 πon exchangeContact force

Page 27: Few-Body Systems in Low Energy Effective Theory

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Page 28: Few-Body Systems in Low Energy Effective Theory

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Chiral Perturbation TheoryChiral Perturbation TheoryChiral Perturbation TheoryChiral Perturbation Theory

&

π + N Δ + heavy meson

      expansion Q

ν =0

ν =2

ν =3

ν =4

3NF2NF 4NF

Page 29: Few-Body Systems in Low Energy Effective Theory

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&

π + N Δ + heavy meson

      expansionQ

Nonrelativisticlimit

ν =0

ν =2

ν =3

ν =4

2NF 3NF 4NF

Chiral Perturbation TheoryChiral Perturbation TheoryChiral Perturbation TheoryChiral Perturbation Theory

Page 30: Few-Body Systems in Low Energy Effective Theory

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Chiral Perturbation TheoryChiral Perturbation TheoryChiral Perturbation TheoryChiral Perturbation Theory

&

π + N Δ + heavy meson

      expansionQ

ν =0

ν =2

ν =3

ν =4

FM 3 NF

2NF 3NF 4NF

Page 31: Few-Body Systems in Low Energy Effective Theory

3MeV

Cross section

Ay

T20

T21

T22

NLO

NNLO

NLO NNLO

Page 32: Few-Body Systems in Low Energy Effective Theory

Cross section

Ay

T20

T21

T22

10 MeV

NLO

NNLO

NLO NNLO

Page 33: Few-Body Systems in Low Energy Effective Theory

Cross section

Ay

T20

T21

T22

65 MeV

NLO

NNLO

NLO NNLO

Page 34: Few-Body Systems in Low Energy Effective Theory

FSI configration

QFS configuration

Space Star configuration

13 MeV

Three-body break-up reaction

NLO

NNLO

Page 35: Few-Body Systems in Low Energy Effective Theory

65 MeV

NLO

NNLO

Three-body break-up reaction

Page 36: Few-Body Systems in Low Energy Effective Theory

Chiral Perturbation Theory

&

π + N Δ + heavy meson

      expansionQ

ν =0

ν =2

ν =3

ν =4

FM 3 NF

2NF 3NF 4NF

Page 37: Few-Body Systems in Low Energy Effective Theory

NNLO 3NF

Page 38: Few-Body Systems in Low Energy Effective Theory

www.kyutech.ac.jp Tucson Melbourn 3NFTucson Melbourn 3NFTucson Melbourn 3NFTucson Melbourn 3NF

g  ( σ ・ q )            

4 π ( m 2+ q 2)W=

( σ ・ q’ )            

m 2+ q’ 2 F( q,q’ )

F ( q,q’ ) =a +b (q ・ q’)+c(q2+q’2)+d σ ・( q×q’ )

Page 39: Few-Body Systems in Low Energy Effective Theory

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F ( q,q’ ) =a +b (q ・ q’)+c(q2+q’2)+d σ ・( q×q’ )

21 3

2 2

42

4 2, ,

, .0

m c c

f f

c

f

b

dc

a

The condition c=0 makes the 3NF new as called TM’-3NF.

c1,c2 and c3 are parameter free.

Relation to TM – 3NF parameters

Page 40: Few-Body Systems in Low Energy Effective Theory

Faddeev three-body calculation for the proton-deuteron elastic

scattering with the realistic NN potential and the three-nucleon force

Differential Cross Section

Elab [MeV ]

Phys. Rev. C 63, 024007 (2001)

135

65

1902 NF only

3 NF included

TM’ 3NF

Urbana IX 3NF

Sagara Discrepancy

Page 41: Few-Body Systems in Low Energy Effective Theory

Tensor Polarization T20

Elab [MeV ]

3 65

190135

Faddeev three-body calculation for the proton-deuteron elastic

scattering with the realistic NN potential and the three-nucleon force

2 NF only

3 NF ( original TM)

TM’ 3NF

Urbana IX 3NF

Page 42: Few-Body Systems in Low Energy Effective Theory

NNLO 3NF

Page 43: Few-Body Systems in Low Energy Effective Theory

Low Energy Constant

Page 44: Few-Body Systems in Low Energy Effective Theory

Chiral Perturbation Theory

&

π + N Δ + heavy meson

      expansion Q

ν =0

ν =2

ν =3

ν =4

3NF2NF 4NF

Page 45: Few-Body Systems in Low Energy Effective Theory

2006.11.17

21 Diagram

35 Diagram

8 Diagram

Page 46: Few-Body Systems in Low Energy Effective Theory

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Fujita-Miyazawa 3NF

b-term,  d-term

Urbana 3NF Tucson-Melbourne 3NFBrazil 3NF

Scalar Short rangeU0

a-term,(c-term)

πρ exchange :F(IΔ+) , Kroll-Ruderman term

Chiral perturbation Theoretical 3 NF (NNNLO)

・2 π-1π term・2 π exchange between all three  nucleons・ contact 1πexchange・ contact 2πexchnge

Illinoi Model

・3 π exchange・・・・・・・{

(1957)

Page 47: Few-Body Systems in Low Energy Effective Theory

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4NF4NF

Page 48: Few-Body Systems in Low Energy Effective Theory

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Chiral Perturbation TheoryChiral Perturbation TheoryChiral Perturbation TheoryChiral Perturbation Theory

&

π + N Δ + heavy meson

      expansion Q

ν =0

ν =2

ν =3

ν =4

3NF2NF 4NF

Page 49: Few-Body Systems in Low Energy Effective Theory

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Possible Diagrams (NNNLO)Possible Diagrams (NNNLO)

Page 50: Few-Body Systems in Low Energy Effective Theory

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CT=0  の場合Gaussian :             - 270 k eV(Λ,Λ )=(400 , 500):     - 386 keV     =(550 , 500):    - 219 keV

Acta Physica Polonica B37, 2889-2903 (2006)

〔 MeV/c 〕

α粒子(4核子系)における4体力の寄与

Page 51: Few-Body Systems in Low Energy Effective Theory

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5NF5NF

Page 52: Few-Body Systems in Low Energy Effective Theory

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[MeV

]

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[MeV

]

V5 < 6kV

Page 55: Few-Body Systems in Low Energy Effective Theory

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SummarySummary

Okubo理論は、カイラル摂動理論に用いることによって、多核子間のポテンシャルをコンシステントに導く. (2NF,3NF,4NF, ・・・)

TM3体力のc項の不必要性を予言し、それによって、陽子・重陽子散乱におけるT20などの偏極量を改善している.

3体力は重要視されつつあり,中重核への適用が期待される.

Page 56: Few-Body Systems in Low Energy Effective Theory

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OutlookOutlookLEC ( Cn, Dn, En, ・・・)は, QCD ラグランジアンから求めるべき“観測量”である .

Quark, Gluon

N, π

QCD

χPT・・・  confinement ?

Page 57: Few-Body Systems in Low Energy Effective Theory

QCD

χPT N, π:  confinement 

VNN VNNN VNNNN

VπN Vππ…

P Q