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Observation of an Antimatter Hypernucleus

**Autoria(s):** ABELEV, B. I.; AGGARWAL, M. M.; AHAMMED, Z.; ALAKHVERDYANTS, A. V.; ALEKSEEV, I.; ANDERSON, B. D.; ARKHIPKIN, D.; AVERICHEV, G. S.; BALEWSKI, J.; BARNBY, L. S.; BAUMGART, S.; BEAVIS, D. R.; BELLWIED, R.; BETANCOURT, M. J.; BETTS, R. R.; BHASIN, A.; BHATI, A. K.; BICHSEL, H.; BIELCIK, J.; BIELCIKOVA, J.; BIRITZ, B.; BLAND, L. C.; BONNER, B. E.; BOUCHET, J.; BRAIDOT, E.; BRANDIN, A. V.; BRIDGEMAN, A.; BRUNA, E.; BUELTMANN, S.; BUNZAROV, I.; BURTON, T. P.; CAI, X. Z.; CAINES, H.; CALDERON, M.; CATU, O.; CEBRA, D.; CENDEJAS, R.; CERVANTES, M. C.; CHAJECKI, Z.; CHALOUPKA, P.; CHATTOPADHYAY, S.; CHEN, H. F.; CHEN, J. H.; CHEN, J. Y.; CHENG, J.; CHERNEY, M.; CHIKANIAN, A.; CHOI, K. E.; CHRISTIE, W.; CHUNG, P.; CLARKE, R. F.; CODRINGTON, M. J. M.; CORLISS, R.; CRAMER, J. G.; CRAWFORD, H. J.; DAS, D.; DASH, S.; LEYVA, A. Davila; SILVA, L. C. De; DEBBE, R. R.; DEDOVICH, T. G.; DEPHILLIPS, M.; DEREVSCHIKOV, A. A.; SOUZA, R. Derradi de; DIDENKO, L.; DJAWOTHO, P.; DOGRA, S. M.; DONG, X.; DRACHENBERG, J. L.; DRAPER, J. E.; DUNLOP, J. C.; MAZUMDAR, M. R. Dutta; EFIMOV, L. G.; ELHALHULI, E.; ELNIMR, M.; ENGELAGE, J.; EPPLEY, G.; ERAZMUS, B.; ESTIENNE, M.; EUN, L.; EVDOKIMOV, O.; FACHINI, P.; FATEMI, R.; FEDORISIN, J.; FERSCH, R. G.; FILIP, P.; FINCH, E.; FINE, V.; FISYAK, Y.; GAGLIARDI, C. A.; GANGADHARAN, D. R.; GANTI, M. S.; GARCIA-SOLIS, E. J.; GEROMITSOS, A.; GEURTS, F.; GHAZIKHANIAN, V.; GHOSH, P.; GORBUNOV, Y. N.; GORDON, A.; GREBENYUK, O.; GROSNICK, D.; GRUBE, B.; GUERTIN, S. M.; GUPTA, A.; GUPTA, N.; GURYN, W.; HAAG, B.; HAMED, A.; HAN, L. -X.; HARRIS, J. W.; HAYS-WEHLE, J. P.; HEINZ, M.; HEPPELMANN, S.; HIRSCH, A.; HJORT, E.; HOFFMAN, A. M.; HOFFMANN, G. W.; HOFMAN, D. J.; HOLLIS, R. S.; HUANG, B.; HUANG, H. Z.; HUMANIC, T. J.; HUO, L.; IGO, G.; IORDANOVA, A.; JACOBS, P.; JACOBS, W. W.; JAKL, P.; JENA, C.; JIN, F.; JONES, C. L.; JONES, P. G.; JOSEPH, J.; JUDD, E. G.; KABANA, S.; KAJIMOTO, K.; KANG, K.; KAPITAN, J.; KAUDER, K.; KEANE, D.; KECHECHYAN, A.; KETTLER, D.; KIKOLA, D. P.; KIRYLUK, J.; KISIEL, A.; KLEIN, S. R.; KNOSPE, A. G.; KOCOLOSKI, A.; KOETKE, D. D.; KOLLEGGER, T.; KONZER, J.; KOPYTINE, M.; KORALT, I.; KOROLEVA, L.; KORSCH, W.; KOTCHENDA, L.; KOUCHPIL, V.; KRAVTSOV, P.; KRUEGER, K.; KRUS, M.; KUMAR, L.; KURNADI, P.; LAMONT, M. A. C.; LANDGRAF, J. M.; LAPOINTE, S.; LAURET, J.; LEBEDEV, A.; LEDNICKY, R.; LEE, C. -H.; LEE, J. H.; LEIGHT, W.; LEVINE, M. J.; LI, C.; LI, L.; LI, N.; LI, W.; LI, X.; LI, Y.; LI, Z.; LIN, G.; LINDENBAUM, S. J.; LISA, M. A.; LIU, F.; LIU, H.; LIU, J.; LJUBICIC, T.; LLOPE, W. J.; LONGACRE, R. S.; LOVE, W. A.; LU, Y.; LUO, X.; MA, G. L.; MA, Y. G.; MAHAPATRA, D. P.; MAJKA, R.; MAL, O. I.; MANGOTRA, L. K.; MANWEILER, R.; MARGETIS, S.; MARKERT, C.; MASUI, H.; MATIS, H. S.; MATULENKO, Yu. A.; MCDONALD, D.; MCSHANE, T. S.; MESCHANIN, A.; MILNER, R.; MINAEV, N. G.; MIODUSZEWSKI, S.; MISCHKE, A.; MITROVSKI, M. K.; MOHANTY, B.; MONDAL, M. M.; MOROZOV, B.; MOROZOV, D. A.; Munhoz, Marcelo Gameiro; NANDI, B. K.; NATTRASS, C.; NAYAK, T. K.; NELSON, J. M.; NETRAKANTI, P. K.; NG, M. J.; NOGACH, L. V.; NURUSHEV, S. B.; ODYNIEC, G.; OGAWA, A.; OKADA, H.; OKOROKOV, V.; OLSON, D.; PACHR, M.; PAGE, B. S.; PAL, S. K.; PANDIT, Y.; PANEBRATSEV, Y.; PAWLAK, T.; PEITZMANN, T.; PEREVOZTCHIKOV, V.; PERKINS, C.; PERYT, W.; PHATAK, S. C.; PILE, P.; PLANINIC, M.; PLOSKON, M. A.; PLUTA, J.; PLYKU, D.; POLJAK, N.; POSKANZER, A. M.; POTUKUCHI, B. V. K. S.; POWELL, C. B.; PRINDLE, D.; PRUNEAU, C.; PRUTHI, N. K.; PUJAHARI, P. R.; PUTSCHKE, J.; QIU, H.; RANIWALA, R.; RANIWALA, S.; RAY, R. L.; REDWINE, R.; REED, R.; RITTER, H. G.; ROBERTS, J. B.; ROGACHEVSKIY, O. V.; ROMERO, J. L.; ROSE, A.; ROY, C.; RUAN, L.; SAHOO, R.; SAKAI, S.; SAKREJDA, I.; SAKUMA, T.; SALUR, S.; SANDWEISS, J.; SANGALINE, E.; SCHAMBACH, J.; SCHARENBERG, R. P.; SCHMITZ, N.; SCHUSTER, T. R.; SEELE, J.; SEGER, J.; SELYUZHENKOV, I.; SEYBOTH, P.; SHAHALIEV, E.; SHAO, M.; SHARMA, M.; SHI, S. S.; SICHTERMANN, E. P.; SIMON, F.; SINGARAJU, R. N.; SKOBY, M. J.; SMIRNOV, N.; SORENSEN, P.; SOWINSKI, J.; SPINKA, H. M.; SRIVASTAVA, B.; STANISLAUS, T. D. S.; STASZAK, D.; STEVENS, J. R.; STOCK, R.; STRIKHANOV, M.; STRINGFELLOW, B.; Suaide, Alexandre Alarcon do Passo; SUAREZ, M. C.; SUBBA, N. L.; SUMBERA, M.; SUN, X. M.; SUN, Y.; SUN, Z.; SURROW, B.; SVIRIDA, D. N.; SYMONS, T. J. M.; Szanto de Toledo, Alejandro; TAKAHASHI, J.; TANG, A. H.; TANG, Z.; TARINI, L. H.; TARNOWSKY, T.; THEIN, D.; THOMAS, H.; TIAN, J.; TIMMINS, A. R.; TIMOSHENKO, S.; TLUSTY, D.; TOKAREV, M.; TRAINOR, T. A.; TRAM, V. N.; TRENTALANGE, S.; TRIBBLE, R. E.; TSAI, O. D.; ULERY, J.; ULLRICH, T.; UNDERWOOD, D. G.; BUREN, G. Van; LEEUWEN, M. van; NIEUWENHUIZEN, G. van; VANFOSSEN JR., J. A.; VARMA, R.; VASCONCELOS, G. M. S.; VASILIEV, A. N.; VIDEBAEK, F.; VIYOGI, Y. P.; VOKAL, S.; VOLOSHIN, S. A.; WADA, M.; WALKER, M.; WANG, F.; WANG, G.; WANG, H.; WANG, J. S.; WANG, Q.; WANG, X. L.; WANG, Y.; WEBB, G.; WEBB, J. C.; WESTFALL, G. D.; WHITTEN JR., C.; WIEMAN, H.; WINGFIELD, E.; WISSINK, S. W.; WITT, R.; WU, Y.; XIE, W.; XU, H.; XU, N.; XU, Q. H.; XU, W.; XU, Y.; XU, Z.; XUE, L.; YANG, Y.; YEPES, P.; YIP, K.; YOO, I. -K.; YUE, Q.; ZAWISZA, M.; ZBROSZCZYK, H.; ZHAN, W.; ZHANG, J.; ZHANG, S.; ZHANG, W. M.; ZHANG, X. P.; ZHANG, Y.; ZHANG, Z. P.; ZHAO, J.; ZHONG, C.; ZHOU, J.; ZHOU, W.; ZHU, X.; ZHU, Y. H.; ZOULKARNEEV, R.; ZOULKARNEEVA, Y.; STAR Collaboration
Contribuinte(s)	UNIVERSIDADE DE SÃO PAULO
Data(s)	20/10/2012 20/10/2012 2010
Resumo	Nuclear collisions recreate conditions in the universe microseconds after the Big Bang. Only a very small fraction of the emitted fragments are light nuclei, but these states are of fundamental interest. We report the observation of antihypertritons-comprising an antiproton, an antineutron, and an antilambda hyperon-produced by colliding gold nuclei at high energy. Our analysis yields 70 +/- 17 antihypertritons (3/Lambda(H) over bar) and 157 +/- 30 hypertritons ((3)(Lambda)H). The measured yields of (3)(Lambda)H (3/Lambda(H) over bar) and (3)He ((3)(He) over bar) are similar, suggesting an equilibrium in coordinate and momentum space populations of up, down, and strange quarks and antiquarks, unlike the pattern observed at lower collision energies. The production and properties of antinuclei, and of nuclei containing strange quarks, have implications spanning nuclear and particle physics, astrophysics, and cosmology. U.S. DOE Office of Science U.S. Department of Energy (DOE) U.S. National Science Foundation (NSF) NSF Sloan Foundation Sloan Foundation Deutsche Forschungsgemeinschaf (DFG) DFG cluster of excellence ""Origin and Structure of the Universe""[CNRS/IN2P3] STFC STFC EPSRC of the United Kingdom EPSRC of the United Kingdom Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) FAPESP CNPq of Brazil Ministry of Education and Science of the Russian Federation Ministry of Education and Science of the Russian Federation Natural Science Foundation of China (NSFC) NNSFC Natural Science Foundation of China Chinese Academy of Sciences (CAS) CAS of China MoST of China MoST of China MoE of China MoE of China GA of the Czech Republic GA of the Czech Republic MSMT of the Czech Republic MSMT of the Czech Republic FOM of the Netherlands Foundation for Fundamental Research on Matter (FOM) NOW of the Netherlands Netherlands Organisation for Scientific Research (NWO) Department of Atomic Energy of India (DAE) DAE of India DST of India DST of India India Council for Scientific and Industrial Research (CSIR) CSIR of India Polish Ministry of Science and Higher Education Polish Ministry of Science and Higher Education Korea Research Foundation Korea Research Foundation Ministry of Science, Education and Sports of the Republic of Croatia Ministry of Science, Education and Sports of the Republic of Croatia Russian Ministry of Science and Technology and RosAtom of Russia Russian Ministry of Science and Technology and RosAtom of Russia
Identificador	SCIENCE, v.328, n.5974, p.58-62, 2010 0036-8075 http://producao.usp.br/handle/BDPI/29474 10.1126/science.1183980 http://dx.doi.org/10.1126/science.1183980
Idioma(s)	eng
Publicador	AMER ASSOC ADVANCEMENT SCIENCE
Relação	Science
Direitos	restrictedAccess Copyright AMER ASSOC ADVANCEMENT SCIENCE
Palavras-Chave	#QUARK-GLUON-PLASMA #LIGHT HYPERNUCLEI #STRANGENESS #LIFETIME #COLLISIONS #PHYSICS #SEARCH #Multidisciplinary Sciences
Tipo	article original article publishedVersion

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