Can Ab Initio Theory Explain the Phenomenon of Parity Inversion in 11Be?

被引：87

作者：

Calci, Angelo ^{[1
]}

Navratil, Petr ^{[1
]}

Roth, Robert ^{[2
]}

Dohet-Eraly, Jeremy ^{[1
,6
]}

Quaglioni, Sofia ^{[3
]}

Hupin, Guillaume ^{[4
,5
]}

机构：

[1] TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada

[2] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

[3] Lawrence Livermore Natl Lab, POB 808,L-414, Livermore, CA 94551 USA

[4] Univ Paris 11, Inst Phys Nucl, CNRS, IN2P3, F-91406 Orsay, France

[5] CEA, DAM, DIF, F-91297 Arpajon, France

[6] Ist Nazl Fis Nucl, Sez Pisa, Largo B Pontecorvo 3, I-56127 Pisa, Italy

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 24期

基金：

加拿大自然科学与工程研究理事会;

关键词：

EFFECTIVE-FIELD THEORY; FEW-NUCLEON FORCES; CHIRAL LAGRANGIANS; LIGHT-NUCLEI; ENERGY-LEVELS; MODEL; SPIN;

D O I：

10.1103/PhysRevLett.117.242501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The weakly bound exotic Be-11 nucleus, famous for its ground-state parity inversion and distinct n + Be-10 halo structure, is investigated from first principles using chiral two-and three-nucleon forces. An explicit treatment of continuum effects is found to be indispensable. We study the sensitivity of the Be-11 spectrum to the details of the three-nucleon force and demonstrate that only certain chiral interactions are capable of reproducing the parity inversion. With such interactions, the extremely large E1 transition between the bound states is reproduced. We compare our photodisintegration calculations to conflicting experimental data and predict a distinct dip around the 3/2(1)(-) resonance energy. Finally, we predict low-lying 3/2(+) and 9/2(+) resonances that are not or not sufficiently measured in experiments.

引用

页数：6

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