arXiv 1707.079022017-07-25hep-exastro-ph.HEnucl-ex

在CERN SPS上用NA61/SHINE测量π-碳相互作用中的强子产生

Measurements of Hadron Production in Pion-Carbon Interactions with NA61/SHINE at the CERN SPS

Raul R. Prado

备注：: Proceedings of 35th International Cosmic Rays Conference, Busan, South Korea

摘要：

NA 61/SHINE是在CERN超级质子同步加速器上设计的一个固定靶实验，用于研究强子-质子、强子-核和核-核相互作用。在这一过程中，我们提出了在π介子-碳生产相互作用，这是根本的重要性，以改善广泛的空气簇射建模，从而解释超高能宇宙射线测量确定强子的光谱结果。特别是，我们的测量（反）重子和$ρ^0$生产的π-碳相互作用可以有助于改善预测的μ子生产的空气簇射模拟使用强子相互作用模型。在这篇文章中，我们讨论了数据分析和结果从介子-碳碰撞记录在束流动量为158和350 GeV/c。初步频谱的$K^{\pm}$和$p$（$\bar{p}$），以及比较预测的强子相互作用模型中使用的空气簇射模拟。此外，我们目前的最终结果的生产$ρ^0$，$ω$和$K^{0*}$共振。

英文摘要：

NA61/SHINE is a fixed target experiment designed to study hadron-proton, hadron-nucleus and nucleus-nucleus interactions at the CERN Super-Proton-Synchrotron. In this proceeding we present results on spectra of identified hadrons produced in pion-carbon production interactions, which are of fundamental importance to improve the extensive air shower modeling, and hence the interpretation of ultra-high-energy-cosmic-rays measurements. In particular, our measurements of (anti)baryons and $ρ^0$ production in pion-carbon interactions can contribute to improve the predictions of muon production by air shower simulations using hadronic interaction models. In this contribution we discuss the data analysis and the results from pion-carbon collisions recorded at beam momenta of 158 and 350 GeV/c. The preliminary spectra of $K^{\pm}$ and $p$($\bar{p}$) are shown, as well as a comparison to predictions of hadronic interaction models used in air shower simulations. Additionally, we present final results on the production of $ρ^0$, $ω$ and $K^{0*}$ resonances.

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