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arXiv 0906.5467hep-ph
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一次扣除Roy型色散关系和$ππ$散射数据的精确分析

Once subtracted Roy-like dispersion relations and a precise analysis of $ππ$ scattering data

R. Garcia-Martin, R. Kaminski, J. R. Pelaez, F. J. Yndurain

摘要:

我们报告了我们在前向色散关系(FDR),以及罗伊方程(RE)和他们的一次减去对应,GKPY方程方面的$ππ$散射数据的数据分析的进展。分析的第一部分包括对不同$ππ$通道的独立拟合。GKPY方程为400 - 1100 MeV区域的S 0波数据的参数化提供了更严格的一致性检验。在第二部分中,我们提出了我们的初步分析,其中拟合被约束为满足误差内的所有色散关系,包括新的GKPY方程,从而仅使用分析性、因果关系和交叉来提供非常精确的和模型无关的数据描述。

英文摘要:

We report our progress on the data analysis of $ππ$ scattering data in terms of Forward Dispersion Relations (FDR), as well as Roy equations (RE) and their once-subtracted counterpart, GKPY equations. The first part of the analysis consists of independent fits to the different $ππ$ channels. The GKPY equations provide a more stringent consistency check for the parametrizations of the S0-wave data in the region from 400 to 1100 MeV, In the second part we present our preliminary analysis where the fits are constrained to satisfy all dispersion relations within errors, including the new GKPY Eqs., thus providing a very precise and model independent description of data using just analyticity, causality and crossing.

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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