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Observation of the antimatter helium-4 nucleus

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成果类型:
期刊论文
作者:
Agakishiev, H.*;Aggarwal, M. M.;Ahammed, Z.;Alakhverdyants, A. V.;Alekseev, I.;...
通讯作者:
Agakishiev, H.
作者机构:
[Kechechyan, A.; Kizka, V.; Agakishiev, H.; Averichev, G. S.; Bunzarov, I.; Efimov, L. G.; Panebratsev, Y.; Alakhverdyants, A. V.; Shahaliev, E.; Rogachevskiy, O. V.; Fedorisin, J.; Zoulkarneev, R.; Zoulkarneeva, Y.; Tokarev, M.; Filip, P.; Lednicky, R.; Dedovich, T. G.; Vokal, S.] Joint Inst Nucl Res, Dubna 141980, Russia.
[Bhati, A. K.; K. Pruthi, N.; Aggarwal, M. M.] Panjab Univ, Chandigarh 160014, India.
[Sakrejda, I.; Wieman, H.; Masui, H.; Schmah, A. M.; Porter, J.; Sichtermann, E. P.; Naglis, M.; Grebenyuk, O. G.; Sun, X. M.; Ploskon, M. A.; Thomas, J. H.; Poskanzer, A. M.; Ritter, H. G.; Zhang, Y.; Powell, C. B.; Hjort, E.; Jacobs, P.; Kiryluk, J.; Klein, S. R.; Olson, D.; Odyniec, G.; Matis, H. S.; Symons, T. J. M.; Ahammed, Z.; Dong, X.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
[Koroleva, L.; Svirida, D. N.; Morozov, B.; Bordyuzhin, I. G.; Alekseev, I.] Alikhanov Inst Theoret & Expt Phys, Moscow 117218, Russia.
[Joseph, J.; Vanfossen, J. A., Jr.; Pandit, Y.; Zhang, W. M.; Kumar, L.; Anderson, B. D.; Margetis, S.; Alford, J.; Keane, D.; Bouchet, J.; Subba, N. L.] Kent State Univ, Kent, OH 44242 USA.
通讯机构:
Joint Institute for Nuclear Research, Russian Federation
语种:
英文
期刊:
Nature
ISSN:
0028-0836
年:
2011
卷:
473
期:
7347
页码:
353-356
基金类别:
RHIC Operations Group; RACF at BNL; NERSC Center at LBNL; Open Science Grid consortium; Offices of NP and HEP within the US DOE Office of ScienceUnited States Department of Energy (DOE); US NSFNational Science Foundation (NSF); Sloan FoundationAlfred P. Sloan Foundation; DFG cluster of excellence 'Origin and Structure of the Universe' of GermanyGerman Research Foundation (DFG); CNRS/IN2P3Centre National de la Recherche Scientifique (CNRS); FAPESPFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); CNPq of BrazilNational Council for Scientific and Technological Development (CNPq); Ministry of Education and Science of the Russian FederationMinistry of Education and Science, Russian Federation; NNSFCNational Natural Science Foundation of China (NSFC); CASChinese Academy of Sciences; MoST; MoE of ChinaMinistry of Education, China; GA and MSMT of the Czech Republic; FOM and NWO of the NetherlandsFOM (The Netherlands); DAE, DST and CSIR of IndiaDepartment of Science & Technology (India)Department of Atomic Energy (DAE); Polish Ministry of Science and Higher EducationMinistry of Science and Higher Education, Poland; Korea Research FoundationKorea Research Foundation; Ministry of Science, Education and Sports of CroatiaMinistry of Science, Education and Sports, Republic of Croatia; RosAtom of Russia
机构署名:
本校为其他机构
院系归属:
物理科学与技术学院
摘要:
The α-particle — the helium nucleus consisting of two protons and two neutrons — was identified a century ago by Ernest Rutherford. Its antimatter counterpart of two antiprotons and two antineutrons has now been detected by the Relativistic Heavy Ion Collider at Brookhaven National Laboratory in Upton, New York. The STAR Collaboration has detected anti-α-particles — the heaviest antinuclei observed to date — at a yield that is consistent with expectations from thermodynamic and coalescent nucleosynthesis models. This discovery provides an...

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