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arXiv 2009.14299nucl-ex
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在$\text{P}_\text{beam}$ = 2.5、2.8和3.2 GeV/c时质子-质子弹性散射到库仑区的测量

Measurement of proton-proton elastic scattering into the Coulomb region at $\text{P}_\text{beam}$ = 2.5, 2.8 and 3.2 GeV/c

H. Xu, Y. Zhou, U. Bechstedt, J. Böker, A. Gillitzer, F. Goldenbaum, D. Grzonka, Q. Hu, A. Khoukaz, F. Klehr, B. Lorentz, D. Prasuhn, J. Ritman, S. Schadmand, … 展开作者

H. Xu, Y. Zhou, U. Bechstedt, J. Böker, A. Gillitzer, F. Goldenbaum, D. Grzonka, Q. Hu, A. Khoukaz, F. Klehr, B. Lorentz, D. Prasuhn, J. Ritman, S. Schadmand, T. Sefzick, T. Stockmanns, I. I. Strakovsky, A. Täschner, C. Wilkin, R. L. Workman, P. Wüstner

摘要:

在2.5 ~ 3.2GeV/c范围内,通过探测极角接近$90^\circ$的反冲质子,测量了三种不同入射质子动量的质子-质子弹性微分截面。测量在COSY进行,KOALA探测器覆盖库仑核干扰区。总截面$σ_\text{tot}$,这已经被精确地确定,是与以前的测量结果一致。在该实验中确定的斜率参数$B$和相对实振幅比$ρ$的值缓解了相关能量区域中数据的缺乏。$ρ$上的精确数据可能是新的色散分析的重要检查。

英文摘要:

The proton--proton elastic differential cross section at very small four momentum transfer squared has been measured at three different incident proton momenta in the range of 2.5 to 3.2 GeV/c by detecting the recoil proton at polar angles close to $90^\circ$. The measurement was performed at COSY with the KOALA detector covering the Coulomb-nuclear interference region. The total cross section $σ_\text{tot}$, which has been determined precisely, is consistent with previous measurements. The values of the slope parameter $B$ and the relative real amplitude ratio $ρ$ determined in this experiment alleviate the lack of data in the relevant energy region. This precise data on $ρ$ might be an important check for a new dispersion analysis.

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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