Search for fractionally charged particles in cosmic rays with the BESS spectrometer

被引：2

作者：

Fuke, H. ^{[1
]}

Tasaki, Y. ^{[1
]}

Abe, K. ^{[2
]}

Haino, S. ^{[3
]}

Makida, Y. ^{[3
]}

Matsuda, S. ^{[3
]}

Mitchell, J. W. ^{[4
]}

Molseev, A. A. ^{[4
]}

Nishimura, J. ^{[5
]}

Nozaki, M. ^{[3
]}

Orito, S. ^{[5
]}

Ormes, J. F. ^{[4
]}

Sasaki, M. ^{[4
]}

Seo, E. S. ^{[6
]}

Shikaze, Y. ^{[2
]}

Streitmatter, R. E. ^{[4
]}

Suzuki, J. ^{[3
]}

Tanaka, K. ^{[3
]}

Yamagami, T. ^{[1
]}

Yamamoto, A. ^{[3
]}

Yoshida, T. ^{[1
]}

Yoshimura, K. ^{[3
]}

机构：

[1] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan

[2] Kobe Univ, Kobe, Hyogo 6578501, Japan

[3] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan

[4] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[5] Univ Tokyo, Tokyo 1130033, Japan

[6] Univ Maryland, College Pk, MD 20742 USA

来源：

ADVANCES IN SPACE RESEARCH | 2008年 / 41卷 / 12期

基金：

美国国家航空航天局;

关键词：

cosmic ray; fractional charge; quark search; superconducting spectrometer; BESS;

D O I：

10.1016/j.asr.2007.02.042

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Historically, there are been many searches for fractionally charged particles in the cosmic radiation. However, few searches have been performed near the top of the atmosphere. We performed a search for relativistic 2/3e charged particles in cosmic rays using data collected during four BESS balloon flights from 1997 to 2000 carried out in northern Canada. The data were analyzed by examining energy deposition in the time-of-flight scintillator hodoscopes. No candidate was found. We derive an upper limit of 4.5 x 10(-7) (cm(2) s sr)(-1) for the flux of 2,e charged particles, at the 90% confidence level. (C) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：2050 / 2055

页数：6

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