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Search for antihelium in cosmic rays

J. Alcaraz D. Alvisi B. Alpat G. Ambrosi H. Anderhub L. Ao A. Arefiev P. Azzarello E. Babucci Luca Baldini M. Basile D. Barancourt 1 F. Barao G. Barbier 1 G. Barreira R. Battiston R. Becker U. Becker L. Bellagamba P. Bene J. Berdugo P. Berges B. Bertucci A. Biland S. Bizzaglia S. Blasko G. Boella M. Bourquin G. Bruni M. Buenerd 1 J.D. Burger W.J. Burger X.D. Cai R. Cavalletti C. Camps P. Cannarsa M. Capell D. Casadei J. Casaus G. Castellini Y.H. Chang H.S. Chen Z.G. Chen N.A. Chernoplekov A. Chiarini T.H. Chiueh Y.L. Chuang F. Cindolo V. Commichau A. Contin A. Cotta-Ramusino P. Crespo M. Cristinziani J.P. da Cunha T.S. Dai J.D. Deus L.K. Ding N. Dinu L. Djambazov I. d'Antone Z.R. Dong E. Emonet F.J. Eppling T. Eronen G. Esposito P. Extermann J. Favier 2 C.C. Feng E. Fiandrini F. Finelli P.H. Fisher R. Flaminio 2 G. Fluegge N. Fouque 2 Yu. Galaktionov M. Gervasi P. Giusti W.K. Gu T.G. Guzik K. Hangarter A. Hasan V. Hermel 2 H. Hofer M.A. Huang W. Hungerford M. Ionica R. Ionica J. Isbert M. Jongmanns W. Karpinski G. Kenney J. Kenny W. Kim A. Klimentov J. Krieger R. Kossakowski 2 V. Koutsenko G. Laborie 1 T. Laitinen G. Lamanna G. Laurenti A. Lebedev S.C. Lee G. Levi P. Levtchenko T.P. Li C.L. Liu H.T. Liu M. Lolli I. Lopes G. Lu Y.S. Lu K. Luebelsmeyer D. Luckey W. Lustermann G. Maehlum C. Mana A. Margotti F. Massera F. Mayet 1 R.R. Mcneil B. Meillon 1 M. Menichelli F. Mezzanotte R. Mezzenga A. Mihul G. Molinari A. Mourao A. Mujunen F. Palmonari G. Pancaldi A. Papi I.H. Park M. Pauluzzi F. Pauss E. Perrin A. Pesci A. Pevsner R. Pilastrini M. Pimenta V. Plyaskin V. Pojidaev H. Postema E. Prati N. Produit P.G. Rancoita D. Rapin F. Raupach S. Recupero D. Ren Zhuoxiang Ren M. Ribordy J.P. Richeux E. Riihonen J. Ritakari U. Roeser C. Rossin 1 R. Sagdeev D. Santos 1 G. Sartorelli A. Schultz von Dratzig G. Schwering V. Shoutko E. Shoumilov R. Siedling D. Son T. Song M. Steuer G.S. Sun H. Suter X.W. Tang S.C.C. Ting S.M. Ting F. Tenbusch G. Torromeo J. Torsti J. Truemper J. Ulbricht S. Urpo I. Usoskin E. Valtonen J. Vandenhirtz E. Velikhov B. Verlaat I. Vetlitsky F. Vezzu 1 J.P. Vialle 2 G. Viertel D. Vite H. von Gunten S. Waldmeier Wicki W. Wallraff B.C. Wang J.Z. Wang Y.H. Wang J.P. Wefel E.A. Werner C. Williams S.X. Wu P.C. Xia J.L. Yan L.G. Yan C.G. Yang M. Yang P. Yeh H.Y. Zhang D.X. Zhao G.Y. Zhu W.Z. Zhu H.L. Zhuang A. Zichichi
Abstract : The Alpha Magnetic Spectrometer (AMS) was flown on the space shuttle Discovery during flight STS-91 in a 51.7 degree orbit at altitudes between 320 and 390 km. A total of 2.86 * 10^6 helium nuclei were observed in the rigidity 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 * 10^-6 is obtained.
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Submitted on : Friday, July 7, 2000 - 10:21:38 AM
Last modification on : Thursday, January 7, 2021 - 4:24:15 PM

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J. Alcaraz, D. Alvisi, B. Alpat, G. Ambrosi, H. Anderhub, et al.. Search for antihelium in cosmic rays. Physics Letters B, Elsevier, 1999, 461, pp.387-396. ⟨in2p3-00005533⟩

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