Search for antihelium in cosmic rays

Authors
Alcaraz, J Alvisi, D 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 Battison, R Becker, R Becker, U Bellagamba, L Bene, P Berdugo, J Berges, P Bertucci, B Biland, A Bizzaglia, S Blasko, S Boella, G Bourquin, M Bruni, G Buenerd, M Burger, JD Burger, WJ Cai, XD Cavalletti, R Camps, C Cannarsa, P Capell, M Casadei, D Casaus, J Castellini, G Chang, YH Chen, HS Chen, ZG Chernoplekov, NA Chiarini, A Chiueh, TH Chuang, YL Cindolo, F Commichau, V Contin, A Cotta-Ramusino, A Crespo, P Cristinziani, M da Cunha, JP Dai, TS Deus, JD Ding, LK Dinu, N Djambazov, L D'Antone, I Dong, ZR Emonet, P Eppling, FJ Eronen, T Esposito, G Extermann, P Favier, J Feng, CC Fiandrini, E Finelli, F Fisher, PH Flaminio, R Fluegge, G Fouque, N Galaktionov, Y Gervasi, M Giusti, P Gu, WQ Guzik, TG Hangarter, K Hasan, A Hermel, V Hofer, H Huang, MA Hungerford, W Ionica, M Ionica, R Isbert, J Jongmanns, M Karpinski, W Kenney, G Kenny, J Kim, W Klimentov, A Krieger, J Kossakowski, R Koutsenko, V Laborie, G Laitinen, T Lamanna, G Laurenti, G Lebedev, A Lee, SC Levi, G Levtchenko, P Li, TP Liu, CL Liu, HT Lolli, M Lopes, I Lu, G Lu, YS Lubelsmeyer, K Luckey, D Lustermann, W Maehlum, G Mana, C Margotti, A Massera, F Mayet, F McNeil, RR Meillon, B Menichelli, M Mezzanotte, F Mezzenga, R Mihul, A Molinari, G Mourao, A Mujunen, A Palmonari, F Pancaldi, G Papi, A Park, IH Pauluzzi, M Pauss, F Perrin, E Pesci, A Pevsner, A Pilastrini, R Pimenta, M Plyaskin, V Pojidaev, V Postema, H Prati, E Produit, N Rancoita, PG Rapin, D Raupach, F Recupero, S Ren, D Ren, Z Ribordy, M Richeux, JP Riihonen, E Ritakari, J Roeser, U Roissin, C Sagdeev, R Santos, D Sartorelli, G von Dratzig, AS Schwering, C Shoutko, V Shoumilov, E Siedling, R Son, D Song, T Steuer, M Sun, GS Suter, H Tang, XW Ting, SCC Ting, SM Tenbusch, F Torromeo, G Torsti, J Trumper, J Ulbricht, J Urpo, S Usoskin, I Valtonen, E Vandenhirtz, J Velikhov, E Verlaat, B Vetlitsky, I Vezzu, F Vialle, JP Viertel, G Vite, D Von Gunten, H Wicki, SW Wallraff, W Wang, BC Wang, JZ Wang, YH Wefel, JP Werner, EA Williams, C Wu, SX Xia, PC Yan, JL Yan, LG Yang, CG Yang, M Yeh, P Zhang, HY Zhao, DX Zhu, GY Zhu, WZ Zhuang, HL Zichichi, A
Citation
J. Alcaraz et al., Search for antihelium in cosmic rays, PHYS LETT B, 461(4), 1999, pp. 387-396
Citations number
12
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
461
Issue
4
Year of publication
1999
Pages
387 - 396
Database
ISI
SICI code
0370-2693(19990902)461:4<387:SFAICR>2.0.ZU;2-P
Abstract
The Alpha Magnetic Spectrometer (AMS) was flown on the space shuttle Discov ery during flight STS-91 in a 51.7 degrees orbit at altitudes between 320 a nd 390 km. A total of 2.86 X 10(6) helium nuclei were observed in the rigid ity range 1 to 140 GV. No antihelium nuclei were detected at any rigidity. An upper limit on the flux ratio of antihelium to helium of < 1.1 X 10(-6) is obtained. (C) 1999 Published by Elsevier Science B.V. All rights reserve d.