Quantum Monte Carlo calculations of electromagnetic moments and transitions in A ≤ 9 nuclei with meson-exchange currents derived from chiral effective field theory

被引：107

作者：

Pastore, S. ^{[1
]}

Pieper, Steven C. ^{[1
]}

Schiavilla, R. ^{[2
,3
]}

Wiringa, R. B. ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

[2] Jefferson Lab, Theory Ctr, Newport News, VA 23606 USA

[3] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 USA

来源：

PHYSICAL REVIEW C | 2013年 / 87卷 / 03期

关键词：

ENERGY-LEVELS; STATE;

D O I：

10.1103/PhysRevC.87.035503

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：

Quantum Monte Carlo calculations of electromagnetic moments and transitions are reported for A <= 9 nuclei. The realistic Argonne upsilon(18) two-nucleon and Illinois-7 three-nucleon potentials are used to generate the nuclear wave functions. Contributions of two-body meson-exchange current (MEC) operators are included for magnetic moments and M1 transitions. The MEC operators have been derived in both a standard nuclear physics approach and a chiral effective field theory formulation with pions and nucleons including up to one-loop corrections. The two-body MEC contributions provide significant corrections and lead to very good agreement with experiment. Their effect is particularly pronounced in the A = 9, T = 3/2 systems, in which they provide up to similar to 20% (similar to 40%) of the total predicted value for the Li-9 (C-9) magnetic moment. DOI: 10.1103/PhysRevC.87.035503

引用

页数：15

共 50 条

[1] H-3 AND HE-3 ELECTROMAGNETIC FORM-FACTORS [J].

AMROUN, A ;

BRETON, V ;

CAVEDON, JM ;

FROIS, B ;

GOUTTE, D ;

JUSTER, FP ;

LECONTE, P ;

MARTINO, J ;

MIZUNO, Y ;

PHAN, XH ;

PLATCHKOV, SK ;

SICK, I ;

WILLIAMSON, S .

NUCLEAR PHYSICS A, 1994, 579 (3-4) :596-626

[2] PION-NUCLEON PARTIAL-WAVE ANALYSIS WITH FIXED-T DISPERSION-RELATION CONSTRAINTS [J].

ARNDT, RA ;

WORKMAN, RL ;

PAVAN, MM .

PHYSICAL REVIEW C, 1994, 49 (05) :2729-2734

[3] The AME2003 atomic mass evaluation (II). Tables, graphs and references [J].

Audi, G ;

Wapstra, AH ;

Thibault, C .

NUCLEAR PHYSICS A, 2003, 729 (01) :337-676

[4] New measurement and reevaluation of the nuclear magnetic andquadrupole moments of 8Li and 9Li -: art. no. 044309 [J].

Borremans, D ;

Yordanov, D ;

Balabanski, DL ;

Neyens, G ;

Lassen, J ;

Blaum, K ;

Kowalska, M ;

Vermeulen, N ;

Himpe, P ;

Lievens, P ;

Neugart, R ;

Gheysen, S ;

Mallion, S ;

Geithner, W .

PHYSICAL REVIEW C, 2005, 72 (04)

[5] Quantum Monte Carlo calculations of spectroscopic overlaps in A ≤ 7 nuclei [J].

Brida, I. ;

Pieper, Steven C. ;

Wiringa, R. B. .

PHYSICAL REVIEW C, 2011, 84 (02)

[6] ELECTROMAGNETIC N-DELTA TRANSITION AT HIGH Q2 [J].

CARLSON, CE .

PHYSICAL REVIEW D, 1986, 34 (09) :2704-2709

[7] GREENS-FUNCTION MONTE-CARLO STUDY OF LIGHT-NUCLEI [J].

CARLSON, J .

PHYSICAL REVIEW C, 1987, 36 (05) :2026-2033

[8] ALPHA-PARTICLE STRUCTURE [J].

CARLSON, J .

PHYSICAL REVIEW C, 1988, 38 (04) :1879-1885

[9] Structure and dynamics of few-nucleon systems [J].

Carlson, J ;

Schiavilla, R .

REVIEWS OF MODERN PHYSICS, 1998, 70 (03) :743-841

[10] Accurate charge-dependent nucleon-nucleon potential at fourth order of chiral perturbation theory [J].

Entem, DR ;

Machleidt, R .

PHYSICAL REVIEW C, 2003, 68 (04) :410011-410015

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