Measurement of the shadowing of high-energy cosmic rays by the Moon:: A search for TeV-energy antiprotons

被引:28
作者
Achard, P
Adriani, O
Aguilar-Benitez, M
van den Akker, M
Alcaraz, J
Alemanni, G
Allaby, J
Aloisio, A
Alviggi, MG
Anderhub, H
Andreev, VP
Anselmo, F
Arefiev, A
Azemoon, T
Aziz, T
Bagnaia, P
Bajo, A
Baksay, G
Baksay, L
Bähr, J
Baldew, SV
Banerjee, S
Banerjee, S
Barczyk, A
Barillère, R
Bartalini, P
Basile, M
Batalova, N
Battiston, R
Bay, A
Becattini, F
Becker, U
Behner, F
Bellucci, L
Berbeco, R
Berdugo, J
Berges, P
Bertucci, B
Betev, BL
Biasini, M
Biglietti, M
Biland, A
Blaising, JJ
Blyth, SC
Bobbink, GJ
Böhm, A
Boldizsar, L
Borgia, B
Bottai, S
Bourilkov, D
机构
[1] Univ Geneva, CH-1211 Geneva, Switzerland
[2] Univ Florence, Sez Firenze, I-50019 Sesto Fiorentino, Italy
[3] Ist Nazl Fis Nucl, Sez Firenze, I-50019 Sesto Fiorentino, Italy
[4] CIEMAT, E-28040 Madrid, Spain
[5] Radboud Univ Nijmegen, NL-6525 ED Nijmegen, Netherlands
[6] Natl Inst Nucl Phys & High Energy Phys, NL-6525 ED Nijmegen, Netherlands
[7] Univ Lausanne, CH-1015 Lausanne, Switzerland
[8] CERN, European Lab Particle Phys, CH-1211 Geneva, Switzerland
[9] Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy
[10] Univ Naples Federico II, I-80125 Naples, Italy
[11] ETH, CH-8093 Zurich, Switzerland
[12] Louisiana State Univ, Baton Rouge, LA 70803 USA
[13] Inst Phys Nucl, St Petersburg, Russia
[14] Univ Bologna, I-40126 Bologna, Italy
[15] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy
[16] ITEP, Moscow, Russia
[17] Univ Michigan, Ann Arbor, MI 48109 USA
[18] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[19] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy
[20] Univ Roma La Sapienza, I-00185 Rome, Italy
[21] Florida Inst Technol, Melbourne, FL 32901 USA
[22] DESY, D-15738 Zeuthen, Germany
[23] NIKHEF, NL-1009 DB Amsterdam, Netherlands
[24] Univ Amsterdam, NL-1009 DB Amsterdam, Netherlands
[25] CNRS, LAPP, IN2P3, F-74941 Annecy Le Vieux, France
[26] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[27] Purdue Univ, W Lafayette, IN 47907 USA
[28] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy
[29] Univ Perugia, I-06100 Perugia, Italy
[30] MIT, Cambridge, MA 02139 USA
[31] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[32] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany
[33] Hungarian Acad Sci, Cent Res Inst Phys, H-1525 Budapest, Hungary
[34] Univ Calif San Diego, La Jolla, CA 92093 USA
[35] Ist Nazl Fis Nucl, Sez Napoli, I-85100 Potenza, Italy
[36] Univ Potenza, I-85100 Potenza, Italy
[37] Natl Cent Univ, Chungli 32054, Taiwan
[38] Univ Lyon 1, Inst Nucl Phys, IN2P3, CNRS, F-69622 Villeurbanne, France
[39] Inst High Energy Phys, Beijing 100039, Peoples R China
[40] USTC, Hefei 230029, Anhui, Peoples R China
[41] Univ Salerno, I-84100 Salerno, Italy
[42] Ist Nazl Fis Nucl, I-84100 Salerno, Italy
[43] Univ Calif Riverside, Riverside, CA 92521 USA
[44] Princeton Univ, Princeton, NJ 08544 USA
[45] Northeastern Univ, Boston, MA 02115 USA
[46] Univ Santiago de Compostela, E-15706 Santiago, Spain
[47] CALTECH, Pasadena, CA 91125 USA
[48] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy
[49] Univ Coll Dublin, Dept Expt Phys, Dublin 4, Ireland
[50] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland
关键词
D O I
10.1016/j.astropartphys.2005.02.002
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The shadowing of high-energy cosmic rays by the Moon has been observed with a significance of 9.4 standard deviations with the L3 + C muon spectrometer at CERN. A significant effect of the Earth magnetic field is observed. Since no event deficit on the east side of the Moon has been observed, an upper limit at 90% confidence level on the antiproton to proton ratio of 0.11 is obtained for primary energies around 1 TeV. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:411 / 434
页数:24
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