MEASUREMENT OF THE ASYMMETRY PARAMETER FOR AR-35 BETA-DECAY AS A TEST OF THE CVC HYPOTHESIS

被引：15

作者：

CONVERSE, A ^{[1
]}

ALLET, M ^{[1
]}

HAEBERLI, W ^{[1
]}

HAJDAS, W ^{[1
]}

LANG, J ^{[1
]}

LIECHTI, J ^{[1
]}

LUSCHER, H ^{[1
]}

MILLER, MA ^{[1
]}

MULLER, R ^{[1
]}

NAVILIATCUNCIC, O ^{[1
]}

QUIN, PA ^{[1
]}

SROMICKI, J ^{[1
]}

机构：

[1] SWISS FED INST TECHNOL,INST MITTELENERGIEPHYS,CH-8093 ZURICH,SWITZERLAND

来源：

PHYSICS LETTERS B | 1993年 / 304卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(93)91400-H

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The asymmetry parameter for the superallowed, mixed Fermi-Gamow-Teller beta-decay of polarized Ar-35 to the mirror nucleus Cl-35 ground state has been measured. The result, A(gs) = 0.427 +/- 0.023, is in good agreement with the Standard Model expectation A(Ft) = 0.4303 +/- 0.0084 and more than five standard deviations from earlier results which suggested a violation of CVC in heavy nuclei.

引用

页码：60 / 64

页数：5

共 38 条

[1] DOES THE CABIBBO ANGLE VANISH IN FERMI MATRIX-ELEMENTS OF HIGH-J STATES [J].

ADELBERGER, EG ;

FERNANDEZ, PB ;

GOSSETT, CA ;

OSBORNE, JL ;

ZEPS, VJ .

PHYSICAL REVIEW LETTERS, 1985, 55 (20) :2129-2132

[2]

ALFIMENKOV VP, 1990, JETP LETT+, V52, P373

[3]

ALLET M, 1992, JUL INT NUCL PHYS C

[4] GAMOW-TELLER MATRIX-ELEMENTS OF T=1/2 NUCLEI AND RENORMALIZATION OF AXIAL-VECTOR COUPLING-CONSTANT [J].

AZUELOS, G ;

KITCHING, JE .

NUCLEAR PHYSICS A, 1977, 285 (01) :19-31

[5] DETERMINATION OF VERTICAL-BAR-V(UD)VERTICAL-BAR FROM FERMI DECAYS AND THE UNITARITY OF THE KM-MIXING MATRIX [J].

BARKER, FC ;

BROWN, BA ;

JAUS, W ;

RASCHE, G .

NUCLEAR PHYSICS A, 1992, 540 (3-4) :501-519

[6] STATUS OF THE STANDARD VECTOR-AXIAL-VECTOR MODEL FOR NUCLEAR BETA-DECAY [J].

BOOTHROYD, AI ;

MARKEY, J ;

VOGEL, P .

PHYSICAL REVIEW C, 1984, 29 (02) :603-617

[7] BETA-DECAY ASYMMETRY AND NUCLEAR MAGNETIC MOMENT OF ARGON-35 [J].

CALAPRICE, FP ;

COMMINS, ED ;

DOBSON, DA .

PHYSICAL REVIEW, 1965, 137 (6B) :1453-+

[8] EXPERIMENTAL STUDY OF WEAK MAGNETISM AND 2ND-CLASS INTERACTION EFFECTS IN BETA-DECAY OF POLARIZED NE-19 [J].

CALAPRICE, FP ;

FREEDMAN, SJ ;

MEAD, WC ;

VANTINE, HC .

PHYSICAL REVIEW LETTERS, 1975, 35 (23) :1566-1570

[9] IS THERE AN INDICATION FOR THE EXISTENCE OF RIGHT-HANDED WEAK CURRENTS IN NUCLEAR BETA-DECAY [J].

CARNOY, AS ;

DEUTSCH, J ;

PRIEELS, R ;

SEVERIJNS, N ;

QUIN, PA .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1992, 18 (05) :823-836

[10] DETERMINATION OF THE WEAK-COUPLING CONSTANTS FROM FREE-NEUTRON DECAY EXPERIMENTS [J].

DUBBERS, D ;

MAMPE, W ;

DOHNER, J .

EUROPHYSICS LETTERS, 1990, 11 (03) :195-200

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