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首页> 外文会议>Proceedings of the 32nd International Cosmic Ray Conference >A Search for Time-Coincident Air Showers Observed with Two Shower Arrays at CERN
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A Search for Time-Coincident Air Showers Observed with Two Shower Arrays at CERN

机译：在欧洲核子研究组织（CERN）上，通过两个喷淋阵列观察时间一致的风淋

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摘要

We report here the results of an experiment carried out at CERN, to search for strangelets whose breakup inspace may result in arrival of a large number of time and angle-coincident air showers spread over a large area. The searchwas carried out with two shower detector arrays, located on the surface at points P2 and P4 at the LHC at CERN, whichare separated horizontally by about 8 kms. The arrival time of showers was recorded at each array with 100 ns accuracyand the spatial arrival angle of showers was determined to an accuracy of 3 o. Data were collected over an effective overlapping time of 4.59 × 107 s -531 days spread over the period, Jun 2004 - Dec 2006. A total of 5.18 × 107showers were collected at P2 and 3.95 × 107 at P4.We searched for pairs of showers arriving, within 30s in time and within 5o in spatial angle, at the two stations. Nonewere detected. This permits us to put a 90% C.L. upper limit of 5.1 × 10-20cm-2sr-1s-1on the flux of strangeletswhich could have broken up somewhere in nearby space giving a spray of high energy baryons over the sensitive areabounded by the two arrays on the Earth.
机译：我们在此报告在欧洲核子研究中心（CERN）进行的一项实验的结果，以寻找其破裂空间可能导致大量时间到来的奇异小子，并且角度一致的空气淋浴会散布在大面积上。搜索使用两个淋浴探测器阵列进行，该阵列位于CERN大型强子对撞机的P2和P4点的表面，它们水平隔开约8公里。在每个阵列上以100 ns的精度记录淋浴的到达时间，并确定淋浴的空间到达角度为3 o。在2004年6月至2006年12月的这段时间里，有效重叠时间为4.59×107 s -531天，收集了数据。在P2收集了5.18×107的淋浴，在P4收集了3.95×107的淋浴。在30 s内，空间角度在5o以内到达两个电台。没有检测到。这使我们可以放置90％的C.L.奇异子的通量的上限为5.1×10-20cm-2sr-1s-1，该奇异子的通量可能会在附近空间的某个地方破裂，从而在由地球上这两个阵列所包围的敏感区域上喷出高能重子。

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  • 会议地点 Beijing(CN)
  • 作者

    SURESH TONWAR; JOACHIM PROCHOTTA; K.C.RAVINDRAN; ARTURO FERNANDEZ TELLEZ; FREJ TORP; JAMES WHITMORE; MARIO DEILE; KARSTEN EGGERT; ENRIQUE GAMEZ FLORES; SUNIL GUPTA; ROBERT HOFFMANN; ATUL JAIN; S.KARTHIKEYAN; SERGIO ROMAN LOPEZ;

  • 作者单位

    Department of Physics, University of Maryland, College Park, MD 20742, USA;

    Fachhochschule Duesseldorf, Fachbereich 3, Josef Gockeln Strasse 9, D-40474 Duesseldorf, Germany;

    Department of High Energy Physics, Tata Institute of Fundamental Research, Homi Bhabha Marg, Navy Nagar, Colaba, Mumbai 400005, India;

    Colegio de Fisica, Ciencias Fisico Matematicas, Univ. Autonoma de Puebla, Mexico;

    Physics Division, C.E.R.N., 1211 Geneva, Switzerland;

    Department of Physics, Penn State University, University Park, PA 16803, USA;

    Physics Division, C.E.R.N., 1211 Geneva, Switzerland;

    Physics Division, C.E.R.N., 1211 Geneva, Switzerland Department of Physics, Penn State University, University Park, PA 16803, USA;

    Colegio de Fisica, Ciencias Fisico Matematicas, Univ. Autonoma de Puebla, Mexico;

    Department of High Energy Physics, Tata Institute of Fundamental Research, Homi Bhabha Marg, Navy Nagar, Colaba, Mumbai 400005, India;

    Fachhochschule Duesseldorf, Fachbereich 3, Josef Gockeln Strasse 9, D-40474 Duesseldorf, Germany;

    Department of High Energy Physics, Tata Institute of Fundamental Research, Homi Bhabha Marg, Navy Nagar, Colaba, Mumbai 400005, India;

    Department of High Energy Physics, Tata Institute of Fundamental Research, Homi Bhabha Marg, Navy Nagar, Colaba, Mumbai 400005, India;

    Colegio de Fisica, Ciencias Fisico Matematicas, Univ. Autonoma de Puebla, Mexico;

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  • 中图分类 宇宙射线强度变化;
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