New measurement of the cosmic-ray positron fraction from 5 to 15 GeV -: art. no. 241102

被引：190

作者：

Beatty, JJ

Bhattacharyya, A

Bower, C

Coutu, S

DuVernois, MA

McKee, S

Minnick, SA

Müller, D

Musser, J

Nutter, S

Labrador, AW

Schubnell, M ^{[1
]}

Swordy, S

Tarlé, G

Tomasch, A

机构：

[1] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[2] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[3] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

[4] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[5] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[6] No Kentucky Univ, Dept Phys & Geol, Highland Hts, KY 41099 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 24期

基金：

美国国家航空航天局;

关键词：

D O I：

10.1103/PhysRevLett.93.241102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a new measurement of the cosmic-ray positron fraction at energies between 5 and 15 GeV with the balloon-borne HEAT-pbar instrument in the spring of 2000. The data presented here are compatible with our previous measurements, obtained with a different instrument. The combined data from the three HEAT flights indicate a small positron flux of nonstandard origin above 5 GeV. We compare the new measurement with earlier data obtained with the HEAT-e(+/-) instrument, during the opposite epoch of the solar cycle, and conclude that our measurements do not support predictions of charge sign dependent solar modulation of the positron abundance at 5 GeV.

引用

页数：4

共 29 条

[1] The Alpha Magnetic Spectrometer (AMS) on the International Space Station:: Part I -: results from the test flight on the space shuttle
Aguilar, M
Alcaraz, J
Allaby, J
Alpat, B
Ambrosi, G
Anderhub, H
Ao, L
Arefiev, A
Azzarello, P
Babucci, E
Baldini, L
Basile, M
Barancourt, D
Barao, F
Barbier, G
Barreira, G
Battiston, R
Becker, R
Becker, U
Bellagamba, L
Béné, P
Berdugo, J
Berges, P
Bertucci, B
Biland, A
Bizzaglia, S
Blasko, S
Boella, G
Boschini, M
Bourquin, M
Brocco, L
Bruni, G
Buénerd, M
Burger, JD
Burger, WJ
Cai, XD
Camps, C
Cannarsa, P
Capell, M
Casadei, D
Casaus, J
Castellini, G
Cecchi, C
Chang, YH
Chen, HF
Chen, HS
Chen, ZG
Chernoplekov, NA
Chiueh, TH
Cho, K
[J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2002, 366 (06): : 331 - 405
[2] Measurements of cosmic-ray low-energy antiproton and proton spectra in a transient period of solar field reversal
Asaoka, Y
Shikaze, Y
Abe, K
Anraku, K
Fujikawa, M
Fuke, H
Haino, S
Imori, M
Izumi, K
Maeno, T
Makida, Y
Matsuda, S
Matsui, N
Matsukawa, T
Matsumoto, H
Matsunaga, H
Mitchell, J
Mitsui, T
Moiseev, A
Motoki, M
Nishimura, J
Nozaki, M
Orito, S
Ormes, JF
Saeki, T
Sanuki, T
Sasaki, M
Seo, ES
Sonoda, T
Streitmatter, R
Suzuki, J
Tanaka, K
Tanizaki, K
Ueda, I
Wang, JZ
Yajima, Y
Yamagami, Y
Yamamoto, A
Yamamoto, Y
Yamato, K
Yoshida, T
Yoshimura, K
[J]. PHYSICAL REVIEW LETTERS, 2002, 88 (05) : 511011 - 511014
[3] Detection of leptonic dark matter -: art. no. 043516
Baltz, EA
Bergström, L
[J]. PHYSICAL REVIEW D, 2003, 67 (04):
[4] Cosmic ray positron excess and neutralino dark matter -: art. no. 063511
Baltz, EA
Edsjö, J
Freese, K
Gondolo, P
[J]. PHYSICAL REVIEW D, 2002, 65 (06):
[5] The High-Energy Antimatter Telescope (HEAT): An instrument for the study of cosmic-ray positrons
Barwick, SW
Beatty, JJ
Bower, CR
Chaput, C
Coutu, S
deNolfo, G
Ellithorpe, D
Ficenec, D
Knapp, J
Lowder, DM
McKee, S
Muller, D
Musser, JA
Nutter, SL
Schneider, E
Swordy, SP
Tang, KK
Tarle, G
Tomasch, AD
Torbet, E
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1997, 400 (01) : 34 - 52
[6] COSMIC-RAY POSITRONS AT HIGH-ENERGIES - A NEW MEASUREMENT
BARWICK, SW
BEATTY, JJ
BOWER, CR
CHAPUT, C
COUTU, S
DENOLFO, G
FICENEC, D
KNAPP, J
LOWDER, DM
MCKEE, S
MULLER, D
MUSSER, JA
NUTTER, SL
SCHNEIDER, E
SWORDY, SP
TANG, KK
TARLE, G
TOMASCH, AD
TORBET, E
[J]. PHYSICAL REVIEW LETTERS, 1995, 75 (03) : 390 - 393
[7] The energy spectra and relative abundances of electrons and positrons in the galactic cosmic radiation
Barwick, SW
Beatty, JJ
Bower, CR
Chaput, CJ
Coutu, S
de Nolfo, GA
DuVernois, MA
Ellithorpe, D
Ficenec, D
Knapp, J
Lowder, DM
McKee, S
Muller, D
Musser, JA
Nutter, SL
Schneider, E
Swordy, SP
Tarle, G
Tomasch, AD
Torbet, E
[J]. ASTROPHYSICAL JOURNAL, 1998, 498 (02) : 779 - 789
[8] BARWICK SW, 1997, ASTROPHYS J, V482, P191
[9] BEACH S, 2001, PHYS REV LETT, V87, P1101
[10] The cosmic-ray electron and positron spectra measured at 1 Au during solar minimum activity
Boezio, M
Carlson, P
Francke, T
Weber, N
Suffert, M
Hof, M
Menn, W
Simon, M
Stephens, SA
Bellotti, R
Cafagna, F
Castellano, M
Circella, M
De Marzo, C
Finetti, N
Papini, P
Piccardi, S
Spillantini, P
Ricci, M
Casolino, M
De Pascale, MP
Morselli, A
Picozza, P
Sparvoli, R
Barbiellini, G
Bravar, U
Schiavon, P
Vacchi, A
Zampa, N
Grimani, C
Mitchell, JW
Ormes, JF
Streitmatter, RE
Golden, RL
Stochaj, SJ
[J]. ASTROPHYSICAL JOURNAL, 2000, 532 (01) : 653 - 669

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