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arXiv 0905.0979nucl-exnucl-th
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Q=39 MeV同位旋过滤dd -> 4 He K+ K-反应的测量

Measurement of the isospin-filtering dd -> 4He K+ K- reaction at Q=39 MeV

X. Yuan, M. Buescher, D. Chiladze, S. Dymov, A. Dzyuba, V. Yu. Grishina, C. Hanhart, M. Hartmann, A. Kacharava, A. Khoukaz, L. A. Kondratyuk, V. Koptev, P. Kule… 展开作者

X. Yuan, M. Buescher, D. Chiladze, S. Dymov, A. Dzyuba, V. Yu. Grishina, C. Hanhart, M. Hartmann, A. Kacharava, A. Khoukaz, L. A. Kondratyuk, V. Koptev, P. Kulessa, M. Mielke, S. Mikirtychiants, M. Nekipelov, M. Papenbrock, K. Pysz, V. Serdyuk, H. Stroeher, C. Wilkin, H. Xu

摘要:

dd -> 4 He K+ K-反应的总截面已在束流动量为3.7 GeV/c时测量,对应于39 MeV的过剩能量,这是冷却器同步加速器COSY-Jülich可能的最大值。氘团簇喷射靶和ANKE前向磁谱仪,放置在储存环内,已在这项调查中使用。我们发现总截面σ(tot)< 14 pb,这就对研究dd -> 4 He α 0(980)反应作为研究同位旋破坏的手段的可行性提出了质疑。

英文摘要:

The total cross section for the dd -> 4He K+ K- reaction has been measured at a beam momentum of 3.7 GeV/c, corresponding to an excess energy of 39 MeV, which is the maximum possible at the Cooler Synchrotron COSY-Jülich. A deuterium cluster-jet target and the ANKE forward magnetic spectrometer, placed inside the storage ring, have been employed in this investigation. We find a total cross section of sigma(tot) < 14 pb, which brings into question the viability of investigating the dd -> 4He a0(980) reaction as a means of studying isospin violation.

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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