A note on the mass splitting of K<sup>*</sup>(892)Supported by NSFC (10275059, 10775124, 90403021) and CAS (KJCX2-SW-N10)
Gao Dao-Neng; Yan Mu-Lin; Gao Dao-Neng; Interdisciplinary Center for Theoretical Study and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China; Yan Mu-Lin; Interdisciplinary Center for Theoretical Study and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
Журнал:
Chinese Physics C
Дата:
2008-11-01
Аннотация:
Belle Collaboration reported a new observed value of K<sup>*−</sup>(892) mass by studying τ<sup>−</sup> → K<sub>S</sub>π<sup>−</sup>ν<sub>τ</sub> decay, which is significantly different from the current world average value given by Particle Data Group 2006. Motivated by this new data, we revisit the issue on the K<sup>*0</sup>(892)−K<sup>*±</sup>(892) mass splitting. Our theoretical estimation favors the new measurement by Belle Collaboration. Therefore further experimental efforts are urgently needed to improve our understanding of these issues.
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