Isovector parity mixing in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>16</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>investigated via the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">N</mml:mi></mml:mrow><m

Kniest, N.; Horoi, Mihai; Dumitrescu, O.; Clausnitzer, G.

doi:10.1103/physrevc.44.491

Cited by 8 publications

(7 citation statements)

References 40 publications

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“…Study of a J=2 doublet in 16 O near 13 MeV excitation energy has been been proposed by Bizetti and Maurenzig [73]. Extensive calculations of the longitudinal and transverse analyzing powers for different models of the weak and strong interactions have been reported by Dumitrescu [74] and by Kniest et al [75].…”

Section: Methodsmentioning

confidence: 99%

Parity Violation and the Nucleon-Nucleon System

Haeberli¹,

Holstein²

1995

Symmetries and Fundamental Interactions in Nuclei

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Section: Methodsmentioning

confidence: 99%

Parity Violation and the Nucleon-Nucleon System

Haeberli¹,

Holstein²

1995

Symmetries and Fundamental Interactions in Nuclei

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“…The PNC matrix elements calculated with weak-coupling constants from different quark models (see Ref. [2] for notation and references) are presented in Table 1(a). The matrix elements were obtained using harmonic-oscillator wave functions with hω = 14.0 MeV.…”

Section: Studies Of Low-energy Parity Nonconservation (Pnc) In Light ...mentioning

confidence: 99%

“…[2] for notation and references) are presented in Table 1(a). The matrix elements were obtained using harmonic-oscillator wave functions withhω = 14.0 MeV.…”

mentioning

confidence: 99%

New calculations of the parity nonconservation matrix element for theJπT0+
Horoi
¹
,
Clausnitzer²,
Brown³
et al. 1994
Phys. Rev. C
10
0
10
0
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A new calculation of the predominantly isoscalar PNC matrix element between the J π T 0 + 1, 0 − 1 (E x ≈ 8.7 MeV) states in 14 N has been carried out in a (0+1+2+3+4)hω model space with the Warburton-Brown interaction. The magnitude of the PNC matrix element of 0.22 to 0.34 eV obtained with the DDH PNC interaction is substantially suppressed compared with previous calculations in smaller model spaces but shows agreement with the preliminary Seattle experimental data. The calculated sign is opposite to that obtained

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“…They involve parity mixed doublets (PMD) [1] in ' N, 'sF, '9F, and 2'Ne. Two others cases involving PMD's in '60 [2] and 2oF [3] have been proposed recently. From the four mentioned cases, only the ' F has been measured with a result larger then the experimental error.…”

mentioning

confidence: 99%

Toward a Consistent Description of Parity Nonconservation inA=18−21Nuclei

Horoi

Brown

1995

Phys. Rev. Lett.

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The current theoretical analyses of the parity nonconserving (PNC) experiments in light nuclei fail to provide a consistent description of the experimental data for ' F, ' F, and 'Ne. We perform a "piecewise" analysis of the PNC matrix elements in the Op&/2-Od5/2-1sl/2 model space and show that by using a proper overall normalization of the isoscalar and isovector parts we can consistently describe all three PNC experimental data. New calculations are also presented for the s p sd p-f -mo-del space which support our analysis. PACS numbers: 24.80.Dc, 11. 30.Er, 21.60.Cs, 27.20.+n The investigations of low energy parity nonconservation (PNC) phenomena in light nuclei have as a goal to provide more reliable results for the hadron-meson weak coupling constants. These couplings are of importance for our understanding of the quark behavior inside the nucleons under the influence of the fundamental interactions. These investigations necessitate both very delicate experiments and very reliable nuclear structure calculations of the matrix elements for a correct extraction of the weak nucleon-meson coupling constants. Most of the results on the experimental and theoretical PNC studies in light nuclei have been presented in a review paper [1]. From the proposed cases during the last 25 years in this range of nuclei, four cases have been selected as reliable enough for experimental and theoretical analysis. They involve parity mixed doublets (PMD) [1] in ' N, 'sF, '9F, and 2'Ne. Two others cases involving PMD's in '60 [2] and 2oF [3] have been proposed recently. From the four mentioned cases, only the ' F has been measured with a result larger then the experimental error. All other cases have been measured with errors larger ('sF and 2'Ne) or near the result ('4N).However, the upper limits obtained for '~F and 'Ne are so small that they impose severe constraints on the different contributions to the PNC matrix elements. These results, compared to current theoretical calculations, have shown a discrepancy, which has not yet been solved (see also Fig. 11 from Ref. [4]). Namely, if one interprets the small limit of the (experimentally) extracted PNC matrix element ((0.029 eV) for 2'Ne as a destructive interference between the isoscalar and the isovector contribution [1], then it is difficult to understand why the isovector contribution in 's F is so small ((0.09 eV) and the constructive isoscalar + isovector contribution in ' F is relatively large (0.40~0.10). In the last few years, efforts have been made to improve the shell-model calculations with special emphasis on the description of the weak observables [5,6]. Recently, two new interactions have been developed by Warburton and Brown [7], which were designed to accurately describe the energies of states in nuclei with A = 10 -22. The interaction was designed for pure oscillator excitations [e.g. , OIico (Op)" configurations, 1Itco (Op)" '(Odls)' configurations, etc. ], but methods have been developed to use them when mixed n Fico excitations contribute [6,8]. Recently, w...

show abstract

Isovector parity mixing inO16investigated via theN

Cited by 8 publications

References 40 publications

Parity Violation and the Nucleon-Nucleon System

Parity Violation and the Nucleon-Nucleon System

New calculations of the parity nonconservation matrix element for theJπT0+
Horoi
¹
,
Clausnitzer²,
Brown³
et al. 1994
Phys. Rev. C
10
0
10
0
View full text Add to dashboard Cite

Toward a Consistent Description of Parity Nonconservation inA=18−21Nuclei

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Isovector parity mixing inO16investigated via theN

Cited by 8 publications

References 40 publications

Parity Violation and the Nucleon-Nucleon System

Parity Violation and the Nucleon-Nucleon System

New calculations of the parity nonconservation matrix element for theJπT0+Horoi1, Clausnitzer2, Brown3 et al. 1994Phys. Rev. C100100View full textAdd to dashboardCite

Toward a Consistent Description of Parity Nonconservation inA=18−21Nuclei

Contact Info

Product

Resources

About

New calculations of the parity nonconservation matrix element for theJπT0+
Horoi
¹
,
Clausnitzer²,
Brown³
et al. 1994
Phys. Rev. C
10
0
10
0
View full text Add to dashboard Cite