تقرير
Experimental Validation of the Largest Calculated Isospin-Symmetry-Breaking Effect in a Superallowed Fermi Decay
| العنوان: | Experimental Validation of the Largest Calculated Isospin-Symmetry-Breaking Effect in a Superallowed Fermi Decay |
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| المؤلفون: | Melconian, D., Triambak, S., Bordeanu, C., García, A., Hardy, J. C., Iacob, V. E., Nica, N., Park, H. I., Tabacaru, G., Trache, L., Towner, I. S., Tribble, R. E., Zhai, Y. |
| سنة النشر: | 2011 |
| المجموعة: | Nuclear Experiment Nuclear Theory |
| مصطلحات موضوعية: | Nuclear Experiment, Nuclear Theory |
| الوصف: | A precision measurement of the gamma yields following the beta decay of 32Cl has determined its isobaric analogue branch to be (22.47^{+0.21}_{-0.19})%. Since it is an almost pure Fermi decay, we can also determine the amount of isospin-symmetry breaking in this superallowed transition. We find a very large value, delta_C=5.3(9)%, in agreement with a shell-model calculation. This result sets a benchmark for isospin-symmetry-breaking calculations and lends support for similarly-calculated, yet smaller, corrections that are currently applied to 0+ -> 0+ transitions for tests of the Standard Model. |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.107.182301 |
| URL الوصول: | http://arxiv.org/abs/1108.5312 |
| رقم الأكسشن: | edsarx.1108.5312 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.107.182301 |
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