DILEPTON DECAY OF GIANT-RESONANCES BUILT ON EXCITED-STATES OF SI-28

被引：14

作者：

BUDA, A

BACELAR, JC

BALANDA, A

SUJKOWSKI, Z

VANDERWOUDE, A

BERSCH, R

CHING, H

DIOSZEGI, I

HOFMAN, DJ

PAUL, P

SCHADMAND, S

VARMA, R

机构：

[1] SUNY STONY BROOK,PLANETARY ATMOSPHERES RES LAB,NUCL STRUCT LAB,STONY BROOK,NY 11794

[2] JAGIELLONIAN UNIV,INST PHYS,PL-30059 KRAKOW,POLAND

[3] SOLTAN INST NUCL STUDIES,PL-05400 OTWOCK,POLAND

[4] HUNGARIAN ACAD SCI,INST ISOTOPES,H-1525 BUDAPEST,HUNGARY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.75.798

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nuclear states in Si-28 were populated at an initial excitation energy E* = 50 MeV via the isospin T = 0 reaction O-16 + C-12. The dilepton- and photon-decay yields were measured simultaneously for the first time up to transition energies of 30 MeV. Statistical decay calculations describe well both measurements on an absolute scale. The measured absolute dilepton cross section, integrated over the transition energy region 15-30 MeV, amounts to sigma(e(+)e(-)) = 84 +/- 6 nb. Implications for measuring a possible monopole strength are discussed.

引用

页码：798 / 801

页数：4

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