Unusually penetrating particle detected by balloon-borne emulsion chamber

M. Ichimura; E. Kamioka; M. Kitazawa; T. Kobayashi; T. Shibata; S. Somemiya; M. Kogawa; S. Kuramata; H. Matsutani; T. Murabayashi; H. Nanjyo; Z. Watanabe; H. Sugimoto; K. Nakazawa

doi:10.1007/BF02771498

Unusually penetrating particle detected by balloon-borne emulsion chamber

M. Ichimura, E. Kamioka, M. Kitazawa, T. Kobayashi, T. Shibata, S. Somemiya, M. Kogawa, S. Kuramata, H. Matsutani, T. Murabayashi, H. Nanjyo, Z. Watanabe, H. Sugimoto, K. Nakazawa

研究成果: Article › 査読

58 被引用数 (Scopus)

抄録

One example of an unusual particle track has been recorded in an emulsion chamber exposed to cosmic rays on a ballon at the atmospheric depth 11.7 g/cm². The particle arrived at the chamber with Z/β=40±2 and β≳0.8. What is extraordinary with this particle is its arrival zenith angle, 87.4°, which amounts to a traversed atmospheric thickness ∼200 g/cm². The anomalous nature of the present track "ET" (exotic track) is demonstrated through the difficulties in reconciling it with the explanation that it is due to an ordinary ultra-heavy cosmic-ray nucleus.

本文言語	English
ページ（範囲）	843-852
ページ数	10
ジャーナル	Il Nuovo Cimento A
巻	106
号	6
DOI	https://doi.org/10.1007/BF02771498
出版ステータス	Published - 1993 6月 1
外部発表	はい

ASJC Scopus subject areas

原子分子物理学および光学
核物理学および高エネルギー物理学
天文学と天体物理学

文献へのアクセス

10.1007/BF02771498

他のファイルとリンク

引用スタイル

@article{42aeabf9e7524cbe984bcc3daed3fd22,

title = "Unusually penetrating particle detected by balloon-borne emulsion chamber",

abstract = "One example of an unusual particle track has been recorded in an emulsion chamber exposed to cosmic rays on a ballon at the atmospheric depth 11.7 g/cm2. The particle arrived at the chamber with Z/β=40±2 and β≳0.8. What is extraordinary with this particle is its arrival zenith angle, 87.4°, which amounts to a traversed atmospheric thickness ∼200 g/cm2. The anomalous nature of the present track {"}ET{"} (exotic track) is demonstrated through the difficulties in reconciling it with the explanation that it is due to an ordinary ultra-heavy cosmic-ray nucleus.",

keywords = "Cosmic rays, Other and hypothetical particles (including tachyons)",

author = "M. Ichimura and E. Kamioka and M. Kitazawa and T. Kobayashi and T. Shibata and S. Somemiya and M. Kogawa and S. Kuramata and H. Matsutani and T. Murabayashi and H. Nanjyo and Z. Watanabe and H. Sugimoto and K. Nakazawa",

year = "1993",

month = jun,

day = "1",

doi = "10.1007/BF02771498",

language = "English",

volume = "106",

pages = "843--852",

journal = "La Rivista del Nuovo Cimento",

issn = "0393-697X",

publisher = "Editrice Compositori s.r.l.",

number = "6",

}

TY - JOUR

T1 - Unusually penetrating particle detected by balloon-borne emulsion chamber

AU - Ichimura, M.

AU - Kamioka, E.

AU - Kitazawa, M.

AU - Kobayashi, T.

AU - Shibata, T.

AU - Somemiya, S.

AU - Kogawa, M.

AU - Kuramata, S.

AU - Matsutani, H.

AU - Murabayashi, T.

AU - Nanjyo, H.

AU - Watanabe, Z.

AU - Sugimoto, H.

AU - Nakazawa, K.

PY - 1993/6/1

Y1 - 1993/6/1

N2 - One example of an unusual particle track has been recorded in an emulsion chamber exposed to cosmic rays on a ballon at the atmospheric depth 11.7 g/cm2. The particle arrived at the chamber with Z/β=40±2 and β≳0.8. What is extraordinary with this particle is its arrival zenith angle, 87.4°, which amounts to a traversed atmospheric thickness ∼200 g/cm2. The anomalous nature of the present track "ET" (exotic track) is demonstrated through the difficulties in reconciling it with the explanation that it is due to an ordinary ultra-heavy cosmic-ray nucleus.

AB - One example of an unusual particle track has been recorded in an emulsion chamber exposed to cosmic rays on a ballon at the atmospheric depth 11.7 g/cm2. The particle arrived at the chamber with Z/β=40±2 and β≳0.8. What is extraordinary with this particle is its arrival zenith angle, 87.4°, which amounts to a traversed atmospheric thickness ∼200 g/cm2. The anomalous nature of the present track "ET" (exotic track) is demonstrated through the difficulties in reconciling it with the explanation that it is due to an ordinary ultra-heavy cosmic-ray nucleus.

KW - Cosmic rays

KW - Other and hypothetical particles (including tachyons)

UR - http://www.scopus.com/inward/record.url?scp=51249170521&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=51249170521&partnerID=8YFLogxK

U2 - 10.1007/BF02771498

DO - 10.1007/BF02771498

M3 - Article

AN - SCOPUS:51249170521

SN - 0393-697X

VL - 106

SP - 843

EP - 852

JO - La Rivista del Nuovo Cimento

JF - La Rivista del Nuovo Cimento

IS - 6

ER -

Unusually penetrating particle detected by balloon-borne emulsion chamber

抄録

ASJC Scopus subject areas

文献へのアクセス

他のファイルとリンク

フィンガープリント

引用スタイル