Pramana | |
Radiative widths of neutral kaon excitations | |
KTeV Collaboration1  Sunil V Somalwar12  | |
[1] $$;Department of Physics, Rutgers University, Piscataway, New Jersey 08854, USA$$ | |
关键词: Radiative width; kaon; Primakoff.; | |
DOI : | |
学科分类:物理(综合) | |
来源: Indian Academy of Sciences | |
【 摘 要 】
We observe 147 events of the axial vector pair $K_{1} (1270) - K_{1} (1400)$ produced in the Coulomb field of a Pb target and measure the radiative widths $𛬠(K_{1} (1400) → K^{0} + ð›¾) = 280.8 ± 23.2$ (stat.) $± (40.4)$ (syst.) keV and $𛬠(K_{1} (1270) → K^{0} + ð›¾) = 73.2 ± 6.1$ (stat.) $± 28.3$ (syst.) keV. These first measurements are lower than the quark-model predictions. We also place upper limits on the radiative widths for $K^{*} (1410)$ and $K_{2}^{*} (1430)$ and find that the letter is very small in accord with $SU(3)$ invariance in the naive quark model.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912040496531ZK.pdf | 146KB | download |