Precision QEC-value measurement of Mg 23 for testing the Cabibbo-Kobayashi-Maskawa matrix unitarity

B. E. Schultz; M. Brodeur; C. Andreoiu; A. Bader; A. Chaudhuri; U. Chowdhury; A. T. Gallant; A. Grossheim; R. Klawitter; A. A. Kwiatkowski; K. G. Leach; A. Lennarz; T. D. Macdonald; J. Lassen; H. Heggen; S. Raeder; A. Teigelhöfer; J. Dilling

doi:10.1103/PhysRevC.90.012501

Precision QEC-value measurement of Mg 23 for testing the Cabibbo-Kobayashi-Maskawa matrix unitarity

B. E. Schultz, M. Brodeur, C. Andreoiu, A. Bader, A. Chaudhuri, U. Chowdhury, A. T. Gallant, A. Grossheim, R. Klawitter, A. A. Kwiatkowski, K. G. Leach, A. Lennarz, T. D. Macdonald, J. Lassen, H. Heggen, S. Raeder, A. Teigelhöfer, J. Dilling

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Abstract

We report a new direct measurement of the transition energy QEC of the Mg23 β+ decay, using the TITAN Penning-trap mass spectrometer. This value is found to agree with the latest atomic mass evaluation while being four times more precise. The increase in precision changes the uncertainty contribution of the QEC value on the statistical rate function fv from 11% to 0.6%, an improvement by a factor of 18. This enables a more robust determination of the corrected Ft value of this mirror transition to the required precision, making possible further test of the Cabibbo-Kobayashi-Maskawa matrix unitarity.

Original language	English
Article number	012501
Journal	Physical Review C - Nuclear Physics
Volume	90
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.90.012501
State	Published - Jul 11 2014
Externally published	Yes

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Schultz, B. E., Brodeur, M., Andreoiu, C., Bader, A., Chaudhuri, A., Chowdhury, U., Gallant, A. T., Grossheim, A., Klawitter, R., Kwiatkowski, A. A., Leach, K. G., Lennarz, A., Macdonald, T. D., Lassen, J., Heggen, H., Raeder, S., Teigelhöfer, A., & Dilling, J. (2014). Precision QEC-value measurement of Mg 23 for testing the Cabibbo-Kobayashi-Maskawa matrix unitarity. Physical Review C - Nuclear Physics, 90(1), Article 012501. https://doi.org/10.1103/PhysRevC.90.012501

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title = "Precision QEC-value measurement of Mg 23 for testing the Cabibbo-Kobayashi-Maskawa matrix unitarity",

abstract = "We report a new direct measurement of the transition energy QEC of the Mg23 β+ decay, using the TITAN Penning-trap mass spectrometer. This value is found to agree with the latest atomic mass evaluation while being four times more precise. The increase in precision changes the uncertainty contribution of the QEC value on the statistical rate function fv from 11% to 0.6%, an improvement by a factor of 18. This enables a more robust determination of the corrected Ft value of this mirror transition to the required precision, making possible further test of the Cabibbo-Kobayashi-Maskawa matrix unitarity.",

author = "Schultz, {B. E.} and M. Brodeur and C. Andreoiu and A. Bader and A. Chaudhuri and U. Chowdhury and Gallant, {A. T.} and A. Grossheim and R. Klawitter and Kwiatkowski, {A. A.} and Leach, {K. G.} and A. Lennarz and Macdonald, {T. D.} and J. Lassen and H. Heggen and S. Raeder and A. Teigelh{\"o}fer and J. Dilling",

year = "2014",

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doi = "10.1103/PhysRevC.90.012501",

language = "English",

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Schultz, BE, Brodeur, M, Andreoiu, C, Bader, A, Chaudhuri, A, Chowdhury, U, Gallant, AT, Grossheim, A, Klawitter, R, Kwiatkowski, AA, Leach, KG, Lennarz, A, Macdonald, TD, Lassen, J, Heggen, H, Raeder, S, Teigelhöfer, A & Dilling, J 2014, 'Precision QEC-value measurement of Mg 23 for testing the Cabibbo-Kobayashi-Maskawa matrix unitarity', Physical Review C - Nuclear Physics, vol. 90, no. 1, 012501. https://doi.org/10.1103/PhysRevC.90.012501

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T1 - Precision QEC-value measurement of Mg 23 for testing the Cabibbo-Kobayashi-Maskawa matrix unitarity

AU - Schultz, B. E.

AU - Brodeur, M.

AU - Andreoiu, C.

AU - Bader, A.

AU - Chaudhuri, A.

AU - Chowdhury, U.

AU - Gallant, A. T.

AU - Grossheim, A.

AU - Klawitter, R.

AU - Kwiatkowski, A. A.

AU - Leach, K. G.

AU - Lennarz, A.

AU - Macdonald, T. D.

AU - Lassen, J.

AU - Heggen, H.

AU - Raeder, S.

AU - Teigelhöfer, A.

AU - Dilling, J.

PY - 2014/7/11

Y1 - 2014/7/11

N2 - We report a new direct measurement of the transition energy QEC of the Mg23 β+ decay, using the TITAN Penning-trap mass spectrometer. This value is found to agree with the latest atomic mass evaluation while being four times more precise. The increase in precision changes the uncertainty contribution of the QEC value on the statistical rate function fv from 11% to 0.6%, an improvement by a factor of 18. This enables a more robust determination of the corrected Ft value of this mirror transition to the required precision, making possible further test of the Cabibbo-Kobayashi-Maskawa matrix unitarity.

AB - We report a new direct measurement of the transition energy QEC of the Mg23 β+ decay, using the TITAN Penning-trap mass spectrometer. This value is found to agree with the latest atomic mass evaluation while being four times more precise. The increase in precision changes the uncertainty contribution of the QEC value on the statistical rate function fv from 11% to 0.6%, an improvement by a factor of 18. This enables a more robust determination of the corrected Ft value of this mirror transition to the required precision, making possible further test of the Cabibbo-Kobayashi-Maskawa matrix unitarity.

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DO - 10.1103/PhysRevC.90.012501

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JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

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ER -

Precision QEC-value measurement of Mg 23 for testing the Cabibbo-Kobayashi-Maskawa matrix unitarity

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