| Full text | |
| Author(s): Show less - |
Agakishiev, H.
[1]
;
Aggarwal, M. M.
[2]
;
Ahammed, Z.
[3]
;
Alakhverdyants, A. V.
[1]
;
Alekseev, I.
[4]
;
Alford, J.
[5]
;
Anderson, B. D.
[5]
;
Anson, C. D.
[6]
;
Arkhipkin, D.
[7]
;
Averichev, G. S.
[1]
;
Balewski, J.
[8]
;
Beavis, D. R.
[7]
;
Behera, N. K.
[9]
;
Bellwied, R.
[10]
;
Betancourt, M. J.
[8]
;
Betts, R. R.
[11]
;
Bhasin, A.
[12, 13, 14]
;
Bhati, A. K.
[2]
;
Bichsel, H.
[15]
;
Bielcik, J.
[16]
;
Bielcikova, J.
[17]
;
Biritz, B.
[18]
;
Bland, L. C.
[7]
;
Bordyuzhin, I. G.
[4]
;
Borowski, W.
[19]
;
Bouchet, J.
[5]
;
Braidot, E.
[20, 21]
;
Brandin, A. V.
[22]
;
Bridgeman, A.
[23]
;
Brovko, S. G.
[24]
;
Bruna, E.
[25]
;
Bueltmann, S.
[26]
;
Bunzarov, I.
[1]
;
Burton, T. P.
[7]
;
Cai, X. Z.
[27]
;
Caines, H.
[25]
;
Calderon, M.
[24]
;
Cebra, D.
[24]
;
Cendejas, R.
[18]
;
Cervantes, M. C.
[12]
;
Chajecki, Z.
[6]
;
Chaloupka, P.
[17]
;
Chattopadhyay, S.
[14]
;
Chen, H. F.
[28]
;
Chen, J. H.
[27]
;
Chen, J. Y.
[29]
;
Chen, L.
[29]
;
Cheng, J.
[30]
;
Cherney, M.
[31]
;
Chikanian, A.
[25]
;
Choi, K. E.
[32]
;
Christie, W.
[7]
;
Chung, P.
[17]
;
Codrington, M. J. M.
[12]
;
Corliss, R.
[8]
;
Cramer, J. G.
[15]
;
Crawford, H. J.
;
Leyva, A. Davila
[33]
;
De Silva, L. C.
[10]
;
Debbe, R. R.
[7]
;
Dedovich, T. G.
[1]
;
Derevschikov, A. A.
[34]
;
Derradi de Souza, R.
[35]
;
Didenko, L.
[7]
;
Djawotho, P.
[12]
;
Dogra, S. M.
[13]
;
Dong, X.
[3]
;
Drachenberg, J. L.
[12]
;
Draper, J. E.
[24]
;
Dunlop, C.
[7]
;
Efimov, L. G.
[1]
;
Elnimr, M.
[36]
;
Engelage, J.
;
Eppley, G.
[37]
;
Estienne, M.
[19]
;
Eun, L.
[38]
;
Evdokimov, O.
[11]
;
Fatemi, R.
[39]
;
Fedorisin, J.
[1]
;
Fersch, R. G.
[39]
;
Filip, P.
[1]
;
Finch, E.
[25]
;
Fine, V.
[7]
;
Fisyak, Y.
[7]
;
Gagliardi, C. A.
[12]
;
Gangadharan, D. R.
[18]
;
Geurts, F.
[37]
;
Ghosh, P.
[14]
;
Gorbunov, Y. N.
[31]
;
Gordon, A.
[7]
;
Grebenyuk, O. G.
[3]
;
Grosnick, D.
[40]
;
Guertin, S. M.
[18]
;
Gupta, A.
[13]
;
Gupta, S.
[13]
;
Guryn, W.
[7]
;
Haag, B.
[24]
;
Hajkova, O.
[16]
;
Hamed, A.
[12]
;
Han, L-X.
[27]
;
Harris, J. W.
[25]
;
Hays-Wehle, J. P.
[8]
;
Heinz, M.
[25]
;
Heppelmann, S.
[38]
;
Hirsch, A.
[41]
;
Hjort, E.
[3]
;
Hoffmann, G. W.
[33]
;
Hofman, D. J.
[11]
;
Huang, B.
[28]
;
Huang, H. Z.
[18]
;
Humanic, T. J.
[6]
;
Huo, L.
[12]
;
Igo, G.
[18]
;
Jacobs, P.
[3]
;
Jacobs, W.
[42]
;
Jena, C.
[43]
;
Jin, F.
[27]
;
Joseph, J.
[5]
;
Judd, E. G.
;
Kabana, S.
[19]
;
Kang, K.
[30]
;
Kapitan, J.
[17]
;
Kauder, K.
[11]
;
Ke, H. W.
[29]
;
Keane, D.
[5]
;
Kechechyan, A.
[1]
;
Kettler, D.
[15]
;
Kikola, D. P.
[41]
;
Kiryluk, J.
[3]
;
Kisiel, A.
[44]
;
Kizka, V.
[1]
;
Klein, S. R.
[3]
;
Knospe, A. G.
[25]
;
Koetke, D. D.
[40]
;
Kollegger, T.
[45]
;
Konzer, J.
[41]
;
Koralt, I.
[26]
;
Koroleva, L.
[4]
;
Korsch, W.
[39]
;
Kotchenda, L.
[22]
;
Kouchpil, V.
[17]
;
Kravtsov, P.
[22]
;
Krueger, K.
[23]
;
Krus, M.
[16]
;
Kumar, L.
[5]
;
Kurnadi, P.
[18]
;
Lamont, M. A. C.
[7]
;
Landgraf, J. M.
[7]
;
LaPointe, S.
[36]
;
Lauret, J.
[7]
;
Lebedev, A.
[7]
;
Lednicky, R.
[1]
;
Lee, J. H.
[7]
;
Leight, W.
[8]
;
LeVine, M. J.
[7]
;
Li, C.
[28]
;
Li, L.
[33]
;
Li, N.
[29]
;
Li, W.
[27]
;
Li, X.
[41, 46]
;
Li, Y.
[30]
;
Li, Z. M.
[29]
;
Lisa, M. A.
[6]
;
Liu, F.
[29]
;
Liu, H.
[24]
;
Liu, J.
;
Ljubicic, T.
[7]
;
Llope, W. J.
[37]
;
Longacre, R. S.
[7]
;
Love, W. A.
[7]
;
Lu, Y.
[28]
;
Lukashov, E. V.
[22]
;
Luo, X.
[28]
;
Ma, G. L.
[27]
;
Ma, Y. G.
[27]
;
Mahapatra, D. P.
[43]
;
Majka, R.
[25]
;
Mall, O. I.
[24]
;
Manweiler, R.
[40]
;
Margetis, S.
[5]
;
Markert, C.
[33]
;
Masui, H.
[3]
;
Matis, H. S.
[3]
;
Matulenko, Yu A.
[34]
;
McDonald, D.
[37]
;
McShane, T. S.
[31]
;
Meschanin, A.
[34]
;
Milner, R.
[8]
;
Minaev, N. G.
[34]
;
Mioduszewski, S.
[12]
;
Mitrovski, M. K.
[7]
;
Mohammed, Y.
[12]
;
Mohanty, B.
[14]
;
Mondal, M. M.
[14]
;
Morozov, B.
[4]
;
Morozov, D. A.
[34]
;
Munhoz, M. G.
[47]
;
Mustafa, M. K.
[41]
;
Naglis, M.
[3]
;
Nandi, B. K.
[9]
;
Nayak, T. K.
[14]
;
Netrakanti, P. K.
[41]
;
Nogach, L. V.
[34]
;
Nurushev, S. B.
[34]
;
Odyniec, G.
[3]
;
Ogawa, A.
[7]
;
Oh, K.
[32]
;
Ohlson, A.
[25]
;
Okorokov, V.
[22]
;
Oldag, E. W.
[33]
;
Olson, D.
[3]
;
Pachr, M.
[16]
;
Page, B. S.
[42]
;
Pal, S. K.
[12]
;
Pandit, Y.
[5]
;
Panebratsev, Y.
[1]
;
Pawlak, T.
[44]
;
Pei, H.
[11]
;
Peitzmann, T.
[20, 21]
;
Perkins, C.
;
Peryt, W.
[44]
;
Pile, P.
[7]
;
Planinic, M.
[48]
;
Ploskon, M. A.
[3]
;
Pluta, J.
[44]
;
Plyku, D.
[26]
;
Poljak, N.
[48]
;
Porter, J.
[3]
;
Poskanzer, A. M.
[3]
;
Potukuchi, B. V. K. S.
[13]
;
Powell, C. B.
[3]
;
Prindle, D.
[15]
;
Pruneau, C.
[36]
;
K. Pruthi, N.
[2]
;
Pujahari, P. R.
[9]
;
Putschke, J.
[25]
;
Qiu, H.
[49]
;
Raniwala, R.
[50]
;
Raniwala, S.
[50]
;
Ray, R. L.
[33]
;
Redwine, R.
[8]
;
Reed, R.
[24]
;
Ritter, H. G.
[3]
;
Roberts, J. B.
[37]
;
Rogachevskiy, O. V.
[1]
;
Romero, J. L.
[24]
;
Ruan, L.
[7]
;
Rusnak, J.
[17]
;
Sahoo, N. R.
[14]
;
Sakrejda, I.
[3]
;
Salur, S.
[24]
;
Sandweiss, J.
[25]
;
Sangaline, E.
[24]
;
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[9]
;
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[33]
;
Scharenberg, R. P.
[41]
;
Schmah, A. M.
[3]
;
Schmitz, N.
[51]
;
Schuster, T. R.
[45]
;
Seele, J.
[8]
;
Seger, J.
[31]
;
Selyuzhenkov, I.
[42]
;
Seyboth, P.
[51]
;
Shah, N.
[18]
;
Shahaliev, E.
[1]
;
Shao, M.
[28]
;
Sharma, M.
[36]
;
Shi, S. S.
[29]
;
Shou, Q. Y.
[27]
;
Sichtermann, E. P.
[3]
;
Simon, F.
[51]
;
Singaraju, R. N.
[14]
;
Skoby, M. J.
[41]
;
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[25]
;
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[50]
;
Sorensen, P.
[7]
;
Spinka, H. M.
[23]
;
Srivastava, B.
[41]
;
Stanislaus, T. D. S.
[40]
;
Staszak, D.
[18]
;
Steadman, S. G.
[8]
;
Stevens, J. R.
[42]
;
Stock, R.
[45]
;
Strikhanov, M.
[22]
;
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[41]
;
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[47]
;
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[11]
;
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[5]
;
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[17]
;
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[3]
;
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[28]
;
Sun, Z.
[49]
;
Surrow, B.
[8]
;
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[4]
;
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[3]
;
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[47]
;
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[35]
;
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[7]
;
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[28]
;
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[36]
;
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[52]
;
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[33]
;
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[3]
;
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[27]
;
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[10]
;
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[17]
;
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[1]
;
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[15]
;
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[18]
;
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[12]
;
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[14]
;
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[18]
;
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[7]
;
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[23]
;
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;
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[8]
;
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;
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[9]
;
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[35]
;
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[34]
;
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[7]
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[14]
;
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[1]
;
Voloshin, S. A.
[36]
;
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[33]
;
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[8]
;
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[41]
;
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[18]
;
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[52]
;
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[49]
;
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[41]
;
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[28]
;
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[30]
;
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[39]
;
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[7]
;
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[52]
;
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[18]
;
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[3]
;
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[42]
;
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[53]
;
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[39]
;
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[29]
;
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[30]
;
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[41]
;
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[49]
;
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[29]
;
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[46]
;
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[18]
;
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[28]
;
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[7]
;
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[27]
;
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[29, 49]
;
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[37]
;
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[7]
;
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[32]
;
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[44]
;
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[44]
;
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[49]
;
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[29]
;
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[27]
;
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[5]
;
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[30]
;
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[3]
;
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[28]
;
Zhao, F.
[18]
;
Zhao, J.
[27]
;
Zhong, C.
[27]
;
Zhou, W.
[45]
;
Zhu, X.
[30]
;
Zhu, Y. H.
[27]
;
Zoulkarneev, R.
[1]
;
Zoulkarneeva, Y.
[1]
;
Collaboration, STAR
Total Authors: 373
|
| Affiliation: Show less - | [1] Joint Inst Nucl Res, Dubna 141980 - Russia
[2] Panjab Univ, Chandigarh 160014 - India
[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 - USA
[4] Alikhanov Inst Theoret & Expt Phys, Moscow 117218 - Russia
[5] Kent State Univ, Kent, OH 44242 - USA
[6] Ohio State Univ, Columbus, OH 43210 - USA
[7] Brookhaven Natl Lab, Upton, NY 11973 - USA
[8] MIT, Cambridge, MA 02139 - USA
[9] Indian Inst Technol, Bombay 400076, Maharashtra - India
[10] Univ Houston, Houston, TX 77204 - USA
[11] Univ Illinois, Chicago, IL 60607 - USA
[12] Texas A&M Univ, College Stn, TX 77843 - USA
[13] Univ Jammu, Jammu 180001 - India
[14] Variable Energy Cyclotron Ctr, Kolkata 700064 - India
[15] Univ Washington, Seattle, WA 98195 - USA
[16] Czech Tech Univ, FNSPE, Prague 11519 - Czech Republic
[17] Nucl Phys Inst AS CR, Rez 25068 - Czech Republic
[18] Univ Calif Los Angeles, Los Angeles, CA 90095 - USA
[19] SUBATECH, F-44307 Nantes - France
[20] NIKHEF, NL-1098 XG Amsterdam - Netherlands
[21] Univ Utrecht, NL-1098 XG Amsterdam - Netherlands
[22] Moscow Engn Phys Inst, Moscow 115409 - Russia
[23] Argonne Natl Lab, Argonne, IL 60439 - USA
[24] Univ Calif Davis, Davis, CA 95616 - USA
[25] Yale Univ, New Haven, CT 06520 - USA
[26] Old Dominion Univ, Norfolk, VA 23529 - USA
[27] Shanghai Inst Appl Phys, Shanghai 201800 - Peoples R China
[28] Univ Sci & Technol China, Hefei 230026 - Peoples R China
[29] CCNU HZNU, Inst Particle Phys, Wuhan 430079 - Peoples R China
[30] Tsinghua Univ, Beijing 100084 - Peoples R China
[31] Creighton Univ, Omaha, NE 68178 - USA
[32] Pusan Natl Univ, Pusan 609735 - South Korea
[33] Univ Texas Austin, Austin, TX 78712 - USA
[34] Inst High Energy Phys, Protvino 142281 - Russia
[35] Univ Estadual Campinas, BR-13083859 Sao Paulo - Brazil
[36] Wayne State Univ, Detroit, MI 48201 - USA
[37] Rice Univ, Houston, TX 77251 - USA
[38] Penn State Univ, University Pk, PA 16802 - USA
[39] Univ Kentucky, Lexington, KY 40506 - USA
[40] Valparaiso Univ, Valparaiso, IN 46383 - USA
[41] Purdue Univ, W Lafayette, IN 47907 - USA
[42] Indiana Univ, Bloomington, IN 47408 - USA
[43] Inst Phys, Bhubaneswar 751005, Orissa - India
[44] Warsaw Univ Technol, PL-00661 Warsaw - Poland
[45] Goethe Univ Frankfurt, D-60325 Frankfurt - Germany
[46] Shandong Univ, Jinan 250100, Shandong - Peoples R China
[47] Univ Sao Paulo, BR-05508090 Sao Paulo - Brazil
[48] Univ Zagreb, HR-10002 Zagreb - Croatia
[49] Inst Modern Phys, Lanzhou 730000 - Peoples R China
[50] Univ Rajasthan, Jaipur 302004, Rajasthan - India
[51] Max Planck Inst Phys & Astrophys, D-80805 Munich - Germany
[52] Michigan State Univ, E Lansing, MI 48824 - USA
[53] USN Acad, Annapolis, MD 21402 - USA
Total Affiliations: 53
|
| Document type: | Journal article |
| Source: | Nature; v. 473, n. 7347, p. 353-356, May 2011. |
| Field of knowledge: | Physical Sciences and Mathematics - Physics |
| Web of Science Citations: | 77 |
| Abstract | |
High-energy nuclear collisions create an energy density similar to that of the Universe microseconds after the Big Bang; in both cases, matter and antimatter are formed with comparable abundance. However, the relatively short-lived expansion in nuclear collisions allows antimatter to decouple quickly from matter, and avoid annihilation. Thus, a high-energy accelerator of heavy nuclei provides an efficient means of producing and studying antimatter. The antimatter helium-4 nucleus (), also known as the anti-α (), consists of two antiprotons and two antineutrons (baryon number B = −4). It has not been observed previously, although the α-particle was identified a century ago by Rutherford and is present in cosmic radiation at the ten per cent level. Antimatter nuclei with B < −1 have been observed only as rare products of interactions at particle accelerators, where the rate of antinucleus production in high-energy collisions decreases by a factor of about 1,000 with each additional antinucleon. Here we report the observation of , the heaviest observed antinucleus to date. In total, 18 counts were detected at the STAR experiment at the Relativistic Heavy Ion Collider (RHIC; ref. 6) in 10<sup>9</sup> recorded gold-on-gold (Au+Au) collisions at centre-of-mass energies of 200 GeV and 62 GeV per nucleon-nucleon pair. The yield is consistent with expectations from thermodynamic and coalescent nucleosynthesis models, providing an indication of the production rate of even heavier antimatter nuclei and a benchmark for possible future observations of in cosmic radiation. (AU) | |
| FAPESP's process: | 11/03164-9 - Investigation of the quark gluon plasma at RHIC and LHC |
| Grantee: | Alexandre Alarcon Do Passo Suaide |
| Support type: | Regular Research Grants |
| FAPESP's process: | 05/55625-9 - Nuclear reactions in relativistic and astrophysical regimes |
| Grantee: | Alejandro Szanto de Toledo |
| Support type: | Research Projects - Thematic Grants |