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arXiv 1604.01437nucl-thhep-phnucl-ex
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1/N_c展开中时间反演不变性破坏的核子-核子势

Time-reversal-invariance-violating nucleon-nucleon potential in the 1/N_c expansion

Daris Samart, Carlos Schat, Matthias R. Schindler, Daniel R. Phillips

摘要:

我们将大$N_c$展开应用于时间反演不变性破坏(TV)核子-核子势。构造了在大$N_c$计数中对下一个到下一个到前导顺序有贡献的算子结构。对于电视和宇称违反的情况下,我们发现一个单一的运营商结构的领导秩序。TV但宇称守恒势包含两个前导阶项,然而与宇称违反势相比,其被1/ $N_c$抑制。与唯象势的比较,包括手征EFT势在电视宇称破坏的情况下,导致电视介子-核子和核子-核子耦合的大- $N_c$标度关系。

英文摘要:

We apply the large-$N_c$ expansion to the time-reversal-invariance-violating (TV) nucleon-nucleon potential. The operator structures contributing to next-to-next-to-leading order in the large-$N_c$ counting are constructed. For the TV and parity-violating case we find a single operator structure at leading order. The TV but parity-conserving potential contains two leading-order terms, which however are suppressed by 1/$N_c$ compared to the parity-violating potential. Comparison with phenomenological potentials, including the chiral EFT potential in the TV parity-violating case, leads to large-$N_c$ scaling relations for TV meson-nucleon and nucleon-nucleon couplings.

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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