TY - JOUR
T1 - Superallowed Fermi transitions in RPA with a relativistic point-coupling energy functional
AU - Li, Zhaoxi
AU - Yao, Jiangming
AU - Chen, Hong
N1 - Funding Information:
One of the authors (Li Z. X.) would like to thank Niu Z. M. for providing the charge-exchange RPA code and thank Liang H. Z., Meng J., Ring P. and Vretenar D. for helpful discussions. This work was supported by the National Natural Science Foundation of China (Grant No. 10947013), the Fundamental Research Funds for the Central Universities (Grant No. XDJK2010B007) and the SWU Initial Research Foundation Grant to Doctor (Grant No. SWU109011).
PY - 2011/6
Y1 - 2011/6
N2 - The self-consistent random phase approximation (RPA) approach with the residual interaction derived from a relativistic point-coupling energy functional is applied to evaluate the isospin symmetry-breaking corrections δ c for the 0+ → 0+ superallowed Fermi transitions. With these δ c values, together with the available experimental f t values and the improved radiative corrections, the unitarity of the Cabibbo-Kobayashi-Maskawa (CKM) matrix is examined. Even with the consideration of uncertainty, the sum of squared top-row elements has been shown to deviate from the unitarity condition by 0.1% for all the employed relativistic energy functionals.
AB - The self-consistent random phase approximation (RPA) approach with the residual interaction derived from a relativistic point-coupling energy functional is applied to evaluate the isospin symmetry-breaking corrections δ c for the 0+ → 0+ superallowed Fermi transitions. With these δ c values, together with the available experimental f t values and the improved radiative corrections, the unitarity of the Cabibbo-Kobayashi-Maskawa (CKM) matrix is examined. Even with the consideration of uncertainty, the sum of squared top-row elements has been shown to deviate from the unitarity condition by 0.1% for all the employed relativistic energy functionals.
KW - Cabibbo-Kobayashi-Maskawa matrix
KW - random phase approximation
KW - relativistic point-coupling energy functional
KW - superallowed Fermi transition
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U2 - 10.1007/s11433-011-4320-2
DO - 10.1007/s11433-011-4320-2
M3 - Review article
AN - SCOPUS:79960368336
SN - 1674-7348
VL - 54
SP - 1131
EP - 1136
JO - Science China: Physics, Mechanics and Astronomy
JF - Science China: Physics, Mechanics and Astronomy
IS - 6
ER -