التفاصيل البيبلوغرافية
| العنوان: |
Dispersion relation analysis of the radiative corrections to g A in the neutron β-decay |
| المؤلفون: |
Mikhail Gorchtein, Chien-Yeah Seng |
| المصدر: |
Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-27 (2021) |
| بيانات النشر: |
SpringerOpen, 2021. |
| سنة النشر: |
2021 |
| المجموعة: |
LCC:Nuclear and particle physics. Atomic energy. Radioactivity |
| مصطلحات موضوعية: |
Quark Masses and SM Parameters, Neutrino Physics, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798 |
| الوصف: |
Abstract We present the first and complete dispersion relation analysis of the inner radiative corrections to the axial coupling constant g A in the neutron β-decay. Using experimental inputs from the elastic form factors and the spin-dependent structure function g 1, we determine the contribution from the γW-box diagram to a precision better than 10 −4. Our calculation indicates that the inner radiative corrections to the Fermi and the Gamow-Teller matrix element in the neutron β-decay are almost identical, i.e. the ratio λ = g A /g V is almost unrenormalized. With this result, we predict the bare axial coupling constant to be g ∘ A = − 1.2754 13 exp 2 RC $$ {\overset{\circ }{g}}_A=-1.2754{(13)}_{\mathrm{exp}}{(2)}_{\mathrm{RC}} $$ based on the PDG average λ = −1.2756(13). |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
1029-8479 |
| Relation: |
https://doaj.org/toc/1029-8479 |
| DOI: |
10.1007/JHEP10(2021)053 |
| URL الوصول: |
https://doaj.org/article/d5b09e02739741a0bff9822e360353d8 |
| رقم الانضمام: |
edsdoj.5b09e02739741a0bff9822e360353d8 |
| قاعدة البيانات: |
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