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arXiv 1106.0180nucl-ex
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中能氘核dp弹性散射分析功率中的三种核子力效应

Three Nucleon Force Effects in Intermediate Energy Deuteron Analyzing Powers for dp Elastic Scattering

K. Sekiguchi, H. Okamura, N. Sakamoto, H. Suzuki, M. Dozono, Y. Maeda, T. Saito, S. Sakaguchi, H. Sakai, M. Sasano, Y. Shimizu, T. Wakasa, K. Yako, H. Witała, W… 展开作者

K. Sekiguchi, H. Okamura, N. Sakamoto, H. Suzuki, M. Dozono, Y. Maeda, T. Saito, S. Sakaguchi, H. Sakai, M. Sasano, Y. Shimizu, T. Wakasa, K. Yako, H. Witała, W. Glöckle, J. Golak, H. Kamada, A. Nogga

摘要:

本文测量了一套完整的高精度氘核-质子弹性散射($dp$)分析本领。新的数据与以前在70,100,135和200 MeV/N的测量数据一起提供。它们与基于现代核子-核子(NN)势单独或结合两种三核子力(3 NF)模型:Tucson-Melbourne 99(TM 99)和Urbana IX的三核子(3 N)Faddeev计算结果进行了比较。在250 MeV/N时,纯NN模型和数据之间存在很大的差异,这些差异不能通过包括3 NF来解决,在c.m. $θ_{\rm c.m.}\gtrsim 120^\circ$的后向角几乎适用于所有的氘核分析能力。这些差异与相同能量下的截面的差异非常相似。我们发现小的相对论效应不能解决与数据的差异,这表明需要其他短程3 NF来获得数据的正确描述。

英文摘要:

A complete high precision set of deuteron analyzing powers for elastic deuteron-proton ($dp$) scattering at 250 MeV/nucleon (MeV/N) has been measured. The new data are presented together with data from previous measurements at 70, 100, 135 and 200 MeV/N. They are compared with the results of three-nucleon (3N) Faddeev calculations based on modern nucleon-nucleon (NN) potentials alone or combined with two models of three nucleon forces (3NFs): the Tucson-Melbourne 99 (TM99) and Urbana IX. At 250 MeV/N large discrepancies between pure NN models and data, which are not resolved by including 3NFs, were found at c.m.\ backward angles of $θ_{\rm c.m.}\gtrsim 120^\circ$ for almost all the deuteron analyzing powers. These discrepancies are quite similar to those found for the cross section at the same energy. We found small relativistic effects that cannot resolve the discrepancies with the data indicating that other, short-ranged 3NFs are required to obtain a proper description of the 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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