@article{0f696b8816874287be22e7b28fa5684b,
title = "New measurement of the cosmic-ray positron fraction from 5 to 15 GeV",
abstract = "A new measurement of the cosmic-ray positron fraction at energies between 5 and 15 Gev was performed. The combined data from the three HEAT flights indicate a small positron flux of nonstandard origin above 5 GeV. A new version of the HEAT instrument, HEAT-polar was also designed to observe the high-energy cosmic-ray anti-proton flux. It is observed that a primary contribution to the positron intensity above a few GeV can still not be ruled out.",
author = "Beatty, {J. J.} and A. Bhattacharyya and C. Bower and S. Coutu and Duvernois, {M. A.} and S. McKee and Minnick, {S. A.} and D. M{\"u}ller and J. Musser and S. Nutter and Labrador, {A. W.} and M. Schubnell and S. Swordy and G. Tarl{\'e} and A. Tomasch",
note = "Funding Information: This work was supported by NASA Grants No. NAG 5-5058, No. NAG 5-5220, No. NAG 5-5223, and No. NAG 5-5230. We wish to thank the National Scientific Balloon Facility and the NSBF launch crews for their excellent support of balloon missions and we gratefully acknowledge contributions from D. Kouba, M. Gebhard, S. Ahmed, and P. Allison. We also thank S. Beach for essential support of the mission.",
year = "2004",
month = dec,
day = "10",
doi = "10.1103/PhysRevLett.93.241102",
language = "English (US)",
volume = "93",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "24",
}