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 & 3 others H. R. Weller, N. -V. Zamfir, M. Zweidinger

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)128-133
JournalPhysics Letters B
Volume741
DOIs
Publication statusPublished - 4 Feb 2015

Keywords

  • Parity doublet
  • Parity violation

Cite this

Beller, J., Stumpf, C., Scheck, M., Pietralla, N., Deleanu, D., Filipescu, D. M., ... 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
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. ; Wagner, J. ; Weller, H. R. ; Zamfir, N. -V. ; Zweidinger, M. / Separation of the 1(+)/1(-) parity doublet in Ne-20. In: Physics Letters B. 2015 ; Vol. 741. pp. 128-133.
@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 = "2",
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

Separation of the 1(+)/1(-) parity doublet in Ne-20. / 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.; Wagner, J.; Weller, H. R.; Zamfir, N. -V.; Zweidinger, M.

In: Physics Letters B, Vol. 741, 04.02.2015, p. 128-133.

Research output: Contribution to journalArticle

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

VL - 741

SP - 128

EP - 133

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

ER -

Beller J, Stumpf C, Scheck M, Pietralla N, Deleanu D, Filipescu DM et al. Separation of the 1(+)/1(-) parity doublet in Ne-20. Physics Letters B. 2015 Feb 4;741:128-133. https://doi.org/10.1016/j.physletb.2014.12.018