The Ay puzzle and the nuclear force

被引：68

作者：

Huber, D ^{[1
]}

Friar, JL ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW C | 1998年 / 58卷 / 02期

关键词：

D O I：

10.1103/PhysRevC.58.674

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The nucleon-deuteron analyzing power A, in elastic nucleon-deuteron scattering poses a longstanding puzzle. At energies E-lab below approximately 30 MeV A, cannot be described by any realistic nucleon-nucleon (NN) force. The inclusion of existing three-nucleon forces does not improve the situation. Because of recent questions about the P-3(J) NN phases, we examine whether reasonable changes in the NN force can resolve the puzzle. In order to do this we investigate the effect on the P-3(J) waves produced by changes in different parts of the potential (viz., the central force, tenser force, etc.), as well as on the two-body observables and on A(gamma). We find that it is not possible with reasonable changes in the NN potential to increase the three-body A(gamma) and at the same time to keep the two-body observables unchanged. We therefore conclude that the A(gamma) puzzle is likely to be solved by new three-nucleon forces, such as those of the spin-orbit type, which have not yet been taken into account.

引用

页码：674 / 685

页数：12

共 40 条

[11]

GLOCKLE W, 1990, NUCL PHYS A, V508, pC115, DOI 10.1016/0375-9474(90)90468-2

[12] The three-nucleon continuum: Achievements, challenges and applications [J].

Glockle, W ;

Witala, H ;

Huber, D ;

Kamada, H ;

Golak, J .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1996, 274 (3-4) :107-285

[13] MOMENTUM-SPACE CALCULATIONS FOR 3-NUCLEON SCATTERING INCLUDING A 3-NUCLEON FORCE [J].

HUBER, D ;

WITALA, H ;

GLOCKLE, W .

FEW-BODY SYSTEMS, 1993, 14 (04) :171-190

[14]

HUBER DL, COMMUNICATION

[15] CROSS-SECTION, POLARIZATION OBSERVABLES, AND PHASE-SHIFT PARAMETERS IN P-D AND N-D ELASTIC-SCATTERING [J].

KIEVSKY, A ;

VIVIANI, M ;

ROSATI, S .

PHYSICAL REVIEW C, 1995, 52 (01) :R15-R19

[16]

Kievsky A, 1996, FEW BODY SY, V9, P405

[17]

Li G-M, UNPUB

[18] THE BONN MESON-EXCHANGE MODEL FOR THE NUCLEON NUCLEON-INTERACTION [J].

MACHLEIDT, R ;

HOLINDE, K ;

ELSTER, C .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1987, 149 (01) :1-89

[19] Nonlocal nature of the nuclear force and its impact on nuclear structure [J].

Machleidt, R ;

Sammarruca, F ;

Song, Y .

PHYSICAL REVIEW C, 1996, 53 (04) :R1483-R1487

[20] ANALYZING POWER IN ND ELASTIC-SCATTERING AT E(LAB)(N)=3 MEV - MEASUREMENT AND CALCULATION [J].

MCANINCH, JE ;

HAEBERLI, W ;

WITALA, H ;

GLOCKLE, W ;

GOLAK, J .

PHYSICS LETTERS B, 1993, 307 (1-2) :13-19

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