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Hadronic Interaction Studies with the ARGO-YBJ Experiment

机译：与ARGO-YBJ实验的强子相互作用研究

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摘要

Cosmic ray physics in the eV primary energy range is among the main scientic goals of theARGO-YBJ experiment. The detector, located at 4300m a.s.l., is a full coverage Extensive Air Shower array consistingof a carpet of Resistive Plate Chambers of about 6700 m . The apparatus layout, performance and location offer a uniquepossibility to make a deep study of several characteristics of the hadronic component of the cosmic ray ux in an energywindow marked by the transition from direct to indirect measurements. In this energy region the primary cosmic raycomposition is sufciently well known in order to make unbiased studies on the hadronic interactions. In particular, theproton-air cross section has been measured in the 1-100 TeV energy region and total proton-proton cross section has beenestimated at center of mass energies where no accelerator data are currently available. The recently implemented analogreadout of the RPC signal allows extending these studies towards higher energies. The lateral distribution of particledensity down to few meters from the core and the shower time structure are currently observed with unprecedentedresolution, thus giving new tools for the study of hadronic interactions at these energies.
机译：eV主能范围内的宇宙射线物理学是ARGO-YBJ实验的主要科学目标之一。该探测器位于4300m a.s.l.，是一个全覆盖的大型风淋阵列，由大约6700 m的电阻板腔地毯组成。仪器的布局，性能和位置为深入研究宇宙射线中强子成分的几个特征（从直接测量到间接测量的过渡）提供了独特的可能性。在这个能量区域中，主要的宇宙射线组成是众所周知的，以便对强子相互作用进行无偏研究。特别地，已经在1-100 TeV的能量区域中测量了质子空气截面，并且在当前没有加速器数据的情况下，在质能中心估计了总的质子-质子截面。最近实现的RPC信号的模拟读数允许将这些研究扩展到更高的能量。目前以前所未有的分辨率观察到距岩心低至几米的粒子密度横向分布和喷淋时间结构，从而为研究这些能量下的强子相互作用提供了新的工具。

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  • 会议地点 Beijing(CN)
  • 作者

    I.DE MITRI; G.MARSELLA; L.PERRONE; A.SURDO; G.ZIZZI;

  • 作者单位

    Dipartimento di Fisica Universita del Salento I-73100 Lecce Italy Istituto Nazionale di Fisica Nucleare INFN Sezione di Lecce I-73100 Lecce Italy;

    Dipartimento di Ingegneria dell'Innovazione Universit a del Salento I-73100 Lecce Italy Istituto Nazionale di Fisica Nucleare INFN Sezione di Lecce I-73100 Lecce Italy;

    Istituto Nazionale di Fisica Nucleare INFN Sezione di Lecce I-73100 Lecce Italy;

    Istituto Nazionale di Fisica Nucleare CNAF I-40127 Bologna Italy;

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  • 关键词

    Cross Section; Hadronic Interactions; Extensive Air Showers;

    机译：横截面;强子相互作用广泛的空气淋浴;

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