MEASUREMENT OF THE INDUCED PSEUDOSCALAR FORM-FACTOR IN THE CAPTURE OF POLARIZED MUONS BY SI NUCLEI

被引：42

作者：

BRUDANIN, V

EGOROV, V

FILIPOVA, T

KACHALKIN, A

KOVALENKO, V

SALAMATIN, A

SHITOV, Y

STEKL, I

VASSILIEV, S

VOROBEL, V

VYLOV, T

YUTLANDOV, I

ZAPAROV, S

DEUTSCH, J

PRIEELS, R

GRENACS, L

RAK, J

BRIANCON, C

机构：

[1] UNIV CATHOLIQUE LOUVAIN,B-1348 LOUVAIN,BELGIUM

[2] INST PHYS NUCL LYON,CR-25068 PRAGUE,CZECH REPUBLIC

[3] CTR SPECTROMETRIE NUCL & SPECTROMETRIE MASSE,F-91405 ORSAY,FRANCE

来源：

NUCLEAR PHYSICS A | 1995年 / 587卷 / 04期

关键词：

SI-28(POLARIZED MU(-); NU); MEASURED E-GAMMA; I-GAMMA; DEDUCED NUCLEAR STATE ALIGNMENT; PARAMETER G(P)/G(A); AL-28 DEDUCED LEVELS; NATURAL TARGET;

D O I：

10.1016/0375-9474(95)00052-3

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 observation with high-resolution Ge detectors of the 1229 and 2171 keV gamma-rays emitted after the Si-28(mu, nu)Al-28(1(+),2202 keV) reaction allowed us to determine the nuclear-amplitude ratio x = M(2)/M(-1) characteristic of this muon-capture reaction. Using the nuclear-structure dependent evaluation of various correction terms (model of CiechBnowicz), our result x = +0.254+/-0.034 provides for the induced pseudoscalar coupling gp the ratio g(P)/g(A)(0.848m(mu)(2)) = 3.4+/-1.0, to be compared to the PCAC prediction of g(P)/g(A) = 7 The model dependence of this apparent quenching remains to be assessed.

引用

页码：577 / 595

页数：19

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