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arXiv nucl-th/0209028nucl-th
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核物质形式下$Λ$超核的非介子弱衰变

Nonmesonic Weak Decay of $Λ$ Hypernuclei within a Nuclear Matter Formalism

E. Bauer, F. Krmpotic

摘要:

研究了非相对论核物质作用下$Λ$超核的非介子弱衰变。作为基本的构建模块,我们使用Oset和Salcedo开发的偏振调制器方法。它表明,交换条件的精确计算是必需的。用局域密度近似计算了$^{12}_ΛC$的非介子衰变宽度,并与有限核计算结果进行了比较,得到了定性的一致。

英文摘要:

The nonmesonic weak decay of $Λ$ hypernuclei using nonrelativistic nuclear matter is studied. As the basic building block we use the Polarization Propagator Method developed by Oset and Salcedo. It is shown that the exact calculation of exchange terms is required. Using the Local Density Approximation we evaluate the nonmesonic decay width for $^{12}_ΛC$ and compare the result with a finite nucleus calculation, obtaining a qualitative agreement.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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