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Title: Determination of the direct double- β -decay Q value of Zr 96 and atomic masses of Zr 90 - 92 , 94 , 96 and Mo 92 , 94 - 98 , 100

Experimental searches for neutrinoless double-β decay offer one of the best opportunities to look for physics beyond the standard model. Detecting this decay would confirm the Majorana nature of the neutrino, and a measurement of its half-life can be used to determine the absolute neutrino mass scale. Important to both tasks is an accurate knowledge of the Q value of the double-β decay. The LEBIT Penning trap mass spectrometer was used for the first direct experimental determination of the ⁹⁶Zr double-β decay Q value: Q ββ=3355.85(15) keV. This value is nearly 7 keV larger than the 2012 Atomic Mass Evaluation [M. Wang et al., Chin. Phys. C 36, 1603 (2012)] value and one order of magnitude more precise. The 3-σ shift is primarily due to a more accurate measurement of the ⁹⁶Zr atomic mass: m(⁹⁶Zr)=95.90827735(17) u. Using the new Q value, the 2νββ-decay matrix element, |M |, is calculated. Improved determinations of the atomic masses of all other zirconium ( 90-92,94,96Zr) and molybdenum ( 92,94-98,100Mo) isotopes using both ¹²C₈ and ⁸⁷Rb as references are also reported.
Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Grant/Contract Number:
03ER-41268
Type:
Publisher's Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear physics
Additional Journal Information:
Journal Name: Physical Review. C, Nuclear physics Journal Volume: 91 Journal Issue: 5; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
OSTI Identifier:
1179712

Gulyuz, K., Ariche, J., Bollen, G., Bustabad, S., Eibach, M., Izzo, C., Novario, S. J., Redshaw, M., Ringle, R., Sandler, R., Schwarz, S., and Valverde, A. A.. Determination of the direct double- β -decay Q value of Zr 96 and atomic masses of Zr 90 - 92 , 94 , 96 and Mo 92 , 94 - 98 , 100. United States: N. p., Web. doi:10.1103/PhysRevC.91.055501.
Gulyuz, K., Ariche, J., Bollen, G., Bustabad, S., Eibach, M., Izzo, C., Novario, S. J., Redshaw, M., Ringle, R., Sandler, R., Schwarz, S., & Valverde, A. A.. Determination of the direct double- β -decay Q value of Zr 96 and atomic masses of Zr 90 - 92 , 94 , 96 and Mo 92 , 94 - 98 , 100. United States. doi:10.1103/PhysRevC.91.055501.
Gulyuz, K., Ariche, J., Bollen, G., Bustabad, S., Eibach, M., Izzo, C., Novario, S. J., Redshaw, M., Ringle, R., Sandler, R., Schwarz, S., and Valverde, A. A.. 2015. "Determination of the direct double- β -decay Q value of Zr 96 and atomic masses of Zr 90 - 92 , 94 , 96 and Mo 92 , 94 - 98 , 100". United States. doi:10.1103/PhysRevC.91.055501.
@article{osti_1179712,
title = {Determination of the direct double- β -decay Q value of Zr 96 and atomic masses of Zr 90 - 92 , 94 , 96 and Mo 92 , 94 - 98 , 100},
author = {Gulyuz, K. and Ariche, J. and Bollen, G. and Bustabad, S. and Eibach, M. and Izzo, C. and Novario, S. J. and Redshaw, M. and Ringle, R. and Sandler, R. and Schwarz, S. and Valverde, A. A.},
abstractNote = {Experimental searches for neutrinoless double-β decay offer one of the best opportunities to look for physics beyond the standard model. Detecting this decay would confirm the Majorana nature of the neutrino, and a measurement of its half-life can be used to determine the absolute neutrino mass scale. Important to both tasks is an accurate knowledge of the Q value of the double-β decay. The LEBIT Penning trap mass spectrometer was used for the first direct experimental determination of the ⁹⁶Zr double-β decay Q value: Qββ=3355.85(15) keV. This value is nearly 7 keV larger than the 2012 Atomic Mass Evaluation [M. Wang et al., Chin. Phys. C 36, 1603 (2012)] value and one order of magnitude more precise. The 3-σ shift is primarily due to a more accurate measurement of the ⁹⁶Zr atomic mass: m(⁹⁶Zr)=95.90827735(17) u. Using the new Q value, the 2νββ-decay matrix element, |M2ν|, is calculated. Improved determinations of the atomic masses of all other zirconium (90-92,94,96Zr) and molybdenum (92,94-98,100Mo) isotopes using both ¹²C₈ and ⁸⁷Rb as references are also reported.},
doi = {10.1103/PhysRevC.91.055501},
journal = {Physical Review. C, Nuclear physics},
number = 5,
volume = 91,
place = {United States},
year = {2015},
month = {5}
}