Separation of the 1(+)/1(-) parity doublet in Ne-20

J. Beller; C. Stumpf; M. Scheck; N. Pietralla; D. Deleanu; D. M. Filipescu; T. Glodariu; W. Haxton; A. Idini; J. H. Kelley; E. Kwan; G. Martinez-Pinedo; R. Raut; C. Romig; R. Roth; G. Rusev; D. Savran; A. P. Tonchev; W. Tornow; J. Wagner; H. R. Weller; N. -V. Zamfir; M. Zweidinger

doi:10.1016/j.physletb.2014.12.018

Separation of the 1(+)/1(-) parity doublet in Ne-20

J. Beller, C. Stumpf, M. Scheck, N. Pietralla, D. Deleanu, D. M. Filipescu, T. Glodariu, W. Haxton, A. Idini, J. H. Kelley, E. Kwan, G. Martinez-Pinedo, R. Raut, C. Romig, R. Roth, G. Rusev, D. Savran, A. P. Tonchev, W. Tornow, J. WagnerH. R. Weller, N. -V. Zamfir, M. Zweidinger

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Abstract

The (J,T) = (1,1) parity doublet in Ne-20 at 11.26 MeV is a good candidate to study parity violation in nuclei. However, its energy splitting is known with insufficient accuracy for quantitative estimates of parity violating effects. To improve on this unsatisfactory situation, nuclear resonance fluorescence experiments using linearly and circularly polarized gamma-ray beams were used to determine the energy difference of the parity doublet Delta E = E(1(-)) - E(1(+)) = -3.2(+/- 0.7) stat((+0.6)(-1.2)) (sys) keVand the ratio of their integrated cross sections I-s,0((+))/ I-s,0((-)) = 29(+/- 3) (stat)((+14)(-7) )(sys). Shell-model calculations predict a parity violating matrix element having a value in the range 0.46-0.83 eV for the parity doublet. The small energy difference of the parity doublet makes Ne-20 an excellent candidate to study parity violation in nuclear excitations.

Original language	English
Pages (from-to)	128-133
Journal	Physics Letters B
Volume	741
DOIs	https://doi.org/10.1016/j.physletb.2014.12.018
Publication status	Published - 4 Feb 2015

Keywords

Parity doublet
Parity violation

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Beller, J., Stumpf, C., Scheck, M., Pietralla, N., Deleanu, D., Filipescu, D. M., Glodariu, T., Haxton, W., Idini, A., Kelley, J. H., Kwan, E., Martinez-Pinedo, G., Raut, R., Romig, C., Roth, R., Rusev, G., Savran, D., Tonchev, A. P., Tornow, W., ... Zweidinger, M. (2015). Separation of the 1(+)/1(-) parity doublet in Ne-20. Physics Letters B, 741, 128-133. https://doi.org/10.1016/j.physletb.2014.12.018

@article{96883dd8525e427ca38be83559f46764,

title = "Separation of the 1(+)/1(-) parity doublet in Ne-20",

abstract = "The (J,T) = (1,1) parity doublet in Ne-20 at 11.26 MeV is a good candidate to study parity violation in nuclei. However, its energy splitting is known with insufficient accuracy for quantitative estimates of parity violating effects. To improve on this unsatisfactory situation, nuclear resonance fluorescence experiments using linearly and circularly polarized gamma-ray beams were used to determine the energy difference of the parity doublet Delta E = E(1(-)) - E(1(+)) = -3.2(+/- 0.7) stat((+0.6)(-1.2)) (sys) keVand the ratio of their integrated cross sections I-s,0((+))/ I-s,0((-)) = 29(+/- 3) (stat)((+14)(-7) )(sys). Shell-model calculations predict a parity violating matrix element having a value in the range 0.46-0.83 eV for the parity doublet. The small energy difference of the parity doublet makes Ne-20 an excellent candidate to study parity violation in nuclear excitations.",

keywords = "Parity doublet, Parity violation",

author = "J. Beller and C. Stumpf and M. Scheck and N. Pietralla and D. Deleanu and Filipescu, {D. M.} and T. Glodariu and W. Haxton and A. Idini and Kelley, {J. H.} and E. Kwan and G. Martinez-Pinedo and R. Raut and C. Romig and R. Roth and G. Rusev and D. Savran and Tonchev, {A. P.} and W. Tornow and J. Wagner and Weller, {H. R.} and Zamfir, {N. -V.} and M. Zweidinger",

year = "2015",

month = feb,

day = "4",

doi = "10.1016/j.physletb.2014.12.018",

language = "English",

volume = "741",

pages = "128--133",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

Beller, J, Stumpf, C, Scheck, M, Pietralla, N, Deleanu, D, Filipescu, DM, Glodariu, T, Haxton, W, Idini, A, Kelley, JH, Kwan, E, Martinez-Pinedo, G, Raut, R, Romig, C, Roth, R, Rusev, G, Savran, D, Tonchev, AP, Tornow, W, Wagner, J, Weller, HR, Zamfir, N-V & Zweidinger, M 2015, 'Separation of the 1(+)/1(-) parity doublet in Ne-20', Physics Letters B, vol. 741, pp. 128-133. https://doi.org/10.1016/j.physletb.2014.12.018

TY - JOUR

T1 - Separation of the 1(+)/1(-) parity doublet in Ne-20

AU - Beller, J.

AU - Stumpf, C.

AU - Scheck, M.

AU - Pietralla, N.

AU - Deleanu, D.

AU - Filipescu, D. M.

AU - Glodariu, T.

AU - Haxton, W.

AU - Idini, A.

AU - Kelley, J. H.

AU - Kwan, E.

AU - Martinez-Pinedo, G.

AU - Raut, R.

AU - Romig, C.

AU - Roth, R.

AU - Rusev, G.

AU - Savran, D.

AU - Tonchev, A. P.

AU - Tornow, W.

AU - Wagner, J.

AU - Weller, H. R.

AU - Zamfir, N. -V.

AU - Zweidinger, M.

PY - 2015/2/4

Y1 - 2015/2/4

N2 - The (J,T) = (1,1) parity doublet in Ne-20 at 11.26 MeV is a good candidate to study parity violation in nuclei. However, its energy splitting is known with insufficient accuracy for quantitative estimates of parity violating effects. To improve on this unsatisfactory situation, nuclear resonance fluorescence experiments using linearly and circularly polarized gamma-ray beams were used to determine the energy difference of the parity doublet Delta E = E(1(-)) - E(1(+)) = -3.2(+/- 0.7) stat((+0.6)(-1.2)) (sys) keVand the ratio of their integrated cross sections I-s,0((+))/ I-s,0((-)) = 29(+/- 3) (stat)((+14)(-7) )(sys). Shell-model calculations predict a parity violating matrix element having a value in the range 0.46-0.83 eV for the parity doublet. The small energy difference of the parity doublet makes Ne-20 an excellent candidate to study parity violation in nuclear excitations.

AB - The (J,T) = (1,1) parity doublet in Ne-20 at 11.26 MeV is a good candidate to study parity violation in nuclei. However, its energy splitting is known with insufficient accuracy for quantitative estimates of parity violating effects. To improve on this unsatisfactory situation, nuclear resonance fluorescence experiments using linearly and circularly polarized gamma-ray beams were used to determine the energy difference of the parity doublet Delta E = E(1(-)) - E(1(+)) = -3.2(+/- 0.7) stat((+0.6)(-1.2)) (sys) keVand the ratio of their integrated cross sections I-s,0((+))/ I-s,0((-)) = 29(+/- 3) (stat)((+14)(-7) )(sys). Shell-model calculations predict a parity violating matrix element having a value in the range 0.46-0.83 eV for the parity doublet. The small energy difference of the parity doublet makes Ne-20 an excellent candidate to study parity violation in nuclear excitations.

KW - Parity doublet

KW - Parity violation

U2 - 10.1016/j.physletb.2014.12.018

DO - 10.1016/j.physletb.2014.12.018

M3 - Article

SN - 0370-2693

VL - 741

SP - 128

EP - 133

JO - Physics Letters B

JF - Physics Letters B

ER -

Separation of the 1(+)/1(-) parity doublet in Ne-20

Abstract

Keywords

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