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arXiv 1111.6511nucl-th
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p(γ,K^+)λ共振含量的贝叶斯推断

Bayesian inference of the resonance content of p(gamma,K^+)Lambda

Lesley De Cruz, Tom Vrancx, Pieter Vancraeyveld, Jan Ryckebusch

摘要:

对全球p(gamma,K^+)Lambda数据进行贝叶斯分析。从建议的11个共振中,我们发现以下核子共振对反应有最高的贡献概率:S11(1535),S11(1650),F15(1680),P13(1720),D13(1900),P13(1900),P11(1900)和F15(2000)。我们采用Regge加共振框架,具有一致的耦合核子共振自旋J=5/2。我们评估了11个候选共振的所有可能组合。最佳模型是从2048个模型变量中选出的,方法是根据全球p(gamma,K^+)Lambda数据计算贝叶斯证据值。

英文摘要:

A Bayesian analysis of the world's p(gamma,K^+)Lambda data is presented. From the proposed selection of 11 resonances, we find that the following nucleon resonances have the highest probability of contributing to the reaction: S11(1535), S11(1650), F15(1680), P13(1720), D13(1900), P13(1900), P11(1900), and F15(2000). We adopt a Regge-plus-resonance framework featuring consistent couplings for nucleon resonances up to spin J=5/2. We evaluate all possible combinations of 11 candidate resonances. The best model is selected from the 2048 model variants by calculating the Bayesian evidence values against the world's p(gamma,K^+)Lambda data.

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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