تقرير
Improved Limit on Tensor Currents in the Weak Interaction from $^8$Li $\beta$ Decay
| العنوان: | Improved Limit on Tensor Currents in the Weak Interaction from $^8$Li $\beta$ Decay |
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| المؤلفون: | Burkey, M. T., Savard, G., Gallant, A. T., Scielzo, N. D., Hirsh, T. Y., Varriano, L., Sargsyan, G. H., Launey, K. D., Brodeur, M., Burdette, D. P., Heckmaier, E., Joerres, K., Klimes, J. W., Kolos, K., Laminack, A., Leach, K. G., Levand, A. F., Longfellow, B., Maaß, B., Marley, S. T., Morgan, G. E., Mueller, P., Orford, R., Padgett, S. W., Galván, A. Pérez, Pierce, J. R., Ray, D., Segel, R., Siegl, K., Sharma, K. S., Wang, B. S. |
| المصدر: | Phys. Rev. Lett. 128, 202502 (2022) |
| سنة النشر: | 2022 |
| المجموعة: | High Energy Physics - Phenomenology Nuclear Experiment Nuclear Theory |
| مصطلحات موضوعية: | Nuclear Experiment, High Energy Physics - Phenomenology, Nuclear Theory |
| الوصف: | The electroweak interaction in the Standard Model (SM) is described by a pure vector-axial-vector structure, though any Lorentz-invariant component could contribute. In this work, we present the most precise measurement of tensor currents in the low-energy regime by examining the $\beta$-$\bar{\nu}$ correlation of trapped $^{8}$Li ions with the Beta-decay Paul Trap. We find $a_{\beta\nu} = -0.3325 \pm 0.0013_{stat} \pm 0.0019_{syst}$ at $1\sigma$ for the case of coupling to right-handed neutrinos $(C_T=-C_T')$, which is consistent with the SM prediction. Comment: 6 pages, 3 figures, 1 table |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.128.202502 |
| الوصول الحر: | http://arxiv.org/abs/2205.01865Test |
| رقم الانضمام: | edsarx.2205.01865 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.128.202502 |
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