REACTION GAMMA-D-]PI(0)D AND THE SMALL COMPONENTS OF THE DEUTERON WAVE-FUNCTION

被引：15

作者：

GARCILAZO, H ^{[1
]}

DEGUERRA, EM ^{[1
]}

机构：

[1] CSIC, INST ESTRUCT MAT, E-28006 MADRID, SPAIN

来源：

PHYSICAL REVIEW C | 1994年 / 49卷 / 02期

关键词：

D O I：

10.1103/PhysRevC.49.R601

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：

We calculate the differential cross section and the photon asymmetry of the reaction gammad --> pi0d for incident photon energies below 1 GeV and compare with data at theta = 130-degrees. Our formalism, based on the spectator-on-mass-shell approximation, is fully relativistic and uses the dNN vertex of Buck and Gross and a recently developed model for the elementary gammaN --> piN amplitude that describes well the first and second resonance regions. We find large sensitivity to the small components of the deuteron wave function in the energy region of the Roper resonance. Comparison to experimental data points towards a deuteron wave function with a high probability of small components.

引用

页码：R601 / R604

页数：4

共 19 条

[1] ISOVECTOR ELECTROMAGNETIC EXCHANGE CURRENTS IN THE CHIRAL APPROACH [J].