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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
general
Measurement of interaction between antiprotons
Nature, Volume 527, No. 7578, Year 2015
Notification
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Description
One of the primary goals of nuclear physics is to understand the force between nucleons, which is a necessary step for understanding the structure of nuclei and how nuclei interact with each other. Rutherford discovered the atomic nucleus in 1911, and the large body of knowledge about the nuclear force that has since been acquired was derived from studies made on nucleons or nuclei. Although antinuclei up to antihelium-4 have been discovered and their masses measured, little is known directly about the nuclear force between antinucleons. Here, we study antiproton pair correlations among data collected by the STAR experiment at the Relativistic Heavy Ion Collider (RHIC), where gold ions are collided with a centre-of-mass energy of 200 gigaelectronvolts per nucleon pair. Antiprotons are abundantly produced in such collisions, thus making it feasible to study details of the antiproton-antiproton interaction. By applying a technique similar to Hanbury Brown and Twiss intensity interferometry, we show that the force between two antiprotons is attractive. In addition, we report two key parameters that characterize the corresponding strong interaction: the scattering length and the effective range of the interaction. Our measured parameters are consistent within errors with the corresponding values for proton-proton interactions. Our results provide direct information on the interaction between two antiprotons, one of the simplest systems of antinucleons, and so are fundamental to understanding the structure of more-complex antinuclei and their properties. © 2015 Macmillan Publishers Limited. All rights reserved.
Authors & Co-Authors
Adamczyk, Leszek
Poland, Krakow
Agh University of Krakow
Adkins, J. Kevin
United States, Lexington
University of Kentucky
Agakishiev, Geydar N.
Russian Federation, Dubna
Joint Institute for Nuclear Research, Dubna
Aggarwal, Madan M.
India, Chandigarh
Panjab University
Ahammed, Zubayer
India, Kolkata
Variable Energy Cyclotron Centre India
Alekseev, Igor G.
Russian Federation, Moscow
Alikhanov Institute for Theoretical and Experimental Physics
Alford, Jeremy
United States, Kent
Kent State University
Aparin, Alexey A.
Russian Federation, Dubna
Joint Institute for Nuclear Research, Dubna
Arkhipkin, Dmitry A.
United States, Upton
Brookhaven National Laboratory
Aschenauer, Elke Caroline
United States, Upton
Brookhaven National Laboratory
Averichev, G. S.
Russian Federation, Dubna
Joint Institute for Nuclear Research, Dubna
Bairathi, Vipul
India, Bhubaneswar
National Institute of Science Education and Research
Banerjee, Ayan
India, Kolkata
Variable Energy Cyclotron Centre India
Bellwied, René
United States, Houston
University of Houston
Bhasin, Anju
India, Jammu
University of Jammu
Bhati, Ashok Kumar
India, Chandigarh
Panjab University
Bhattarai, P.
United States, Austin
The University of Texas at Austin
Bielčík, Jaroslav
Czech Republic, Prague
Czech Technical University in Prague
Bielčíková, Jana
Czech Republic, Rez
Nuclear Physics Institute of the Academy of Sciences of the Czech Republic V. V. I.
Bland, Leslie C.
United States, Upton
Brookhaven National Laboratory
Bordyuzhin, Igor G.
Russian Federation, Moscow
Alikhanov Institute for Theoretical and Experimental Physics
Bouchet, Jonathan
United States, Kent
Kent State University
Brandenburg, James Daniel
United States, Houston
Rice University
Brandin, A. V.
Russian Federation, Moscow
National Research Nuclear University Mephi
Bunzarov, I. Zh
Russian Federation, Dubna
Joint Institute for Nuclear Research, Dubna
Butterworth, Jonathan Mark
United States, Houston
Rice University
Caines, Helen Louise
United States, New Haven
Yale University
de la Barca Sánchez, Manuel Calderón
United States, Davis
University of California, Davis
Campbell, John M.
United States, Columbus
The Ohio State University
Cebra, Daniel A.
United States, Davis
University of California, Davis
Cervantes, Matthew C.
United States, College Station
Texas A&m University
Chakaberia, Irakli
United States, Upton
Brookhaven National Laboratory
Chaloupka, Petr
Czech Republic, Prague
Czech Technical University in Prague
Chang, Zilong
United States, College Station
Texas A&m University
Chattopadhyay, Sanatan
India, Kolkata
Variable Energy Cyclotron Centre India
Chen, Jinhui
China, Shanghai
Shanghai Institute of Applied Physics, Chinese Academy of Sciences
Chen, Xiaolong
China, Lanzhou
Institute of Modern Physics Chinese Academy of Sciences
Cheng, Jianping
China, Beijing
Tsinghua University
Cherney, Michael Gerard
United States, Omaha
Creighton University
Christie, William B.
United States, Upton
Brookhaven National Laboratory
Contin, Giacomo
United States, Berkeley
Lawrence Berkeley National Laboratory
Crawford, Henry J.
United States, Berkeley
University of California, Berkeley
Das, Sabita
India, Bhubaneswar
Institute of Physics Bhubaneswar
Debbe, Ramiro R.
United States, Upton
Brookhaven National Laboratory
Dedovich, Tatiana G.
Russian Federation, Dubna
Joint Institute for Nuclear Research, Dubna
Deng, Jian
China, Jinan
Shandong University
Derevschikov, A. A.
Russian Federation, Protvino
Institut Fiziki Vysokikh Energii
Di Ruzza, Benedetto
United States, Upton
Brookhaven National Laboratory
Didenko, L.
United States, Upton
Brookhaven National Laboratory
Dilks, Christopher
United States, University Park
Pennsylvania State University
Dong, Xin
United States, Berkeley
Lawrence Berkeley National Laboratory
Drachenberg, Jim L.
United States, Valparaiso
Valparaiso University
Draper, James E.
United States, Davis
University of California, Davis
Du, Chengming
China, Lanzhou
Institute of Modern Physics Chinese Academy of Sciences
Dunkelberger, L. E.
United States, Los Angeles
University of California, Los Angeles
Dunlop, James C.
United States, Upton
Brookhaven National Laboratory
Efimov, L. G.
Russian Federation, Dubna
Joint Institute for Nuclear Research, Dubna
Engelage, J. M.
United States, Berkeley
University of California, Berkeley
Eppley, G.
United States, Houston
Rice University
Esha, Roli
United States, Los Angeles
University of California, Los Angeles
Evdokimov, Olga
United States, Chicago
University of Illinois at Chicago
Eyser, Oleg
United States, Upton
Brookhaven National Laboratory
Fatemi, Renee D.
United States, Lexington
University of Kentucky
Fazio, Salvatore
United States, Upton
Brookhaven National Laboratory
Federič, Pavol
Czech Republic, Rez
Nuclear Physics Institute of the Academy of Sciences of the Czech Republic V. V. I.
Fedorišin, Ján
Russian Federation, Dubna
Joint Institute for Nuclear Research, Dubna
Filip, Peter
Russian Federation, Dubna
Joint Institute for Nuclear Research, Dubna
Fisyak, Yuri
United States, Upton
Brookhaven National Laboratory
Flores, Christopher E.
United States, Davis
University of California, Davis
Fulek, Łukasz
Poland, Krakow
Agh University of Krakow
Gagliardi, C. A.
United States, College Station
Texas A&m University
Garand, David M.
United States, West Lafayette
Purdue University
Geurts, Frank J.M.
United States, Houston
Rice University
Gibson, Adam
United States, Valparaiso
Valparaiso University
Girard, Martin Robert
Poland, Warsaw
Politechnika Warszawska
Greiner, Leo C.
United States, Berkeley
Lawrence Berkeley National Laboratory
Grosnick, D. P.
United States, Valparaiso
Valparaiso University
Gunarathne, D. S.
United States, Philadelphia
Temple University
Guo, Yupei
China, Hefei
University of Science and Technology of China
Gupta, Anik
India, Jammu
University of Jammu
Gupta, Sheenu K.
India, Jammu
University of Jammu
Guryn, Wlodek
United States, Upton
Brookhaven National Laboratory
Hamad, A. I.
United States, Kent
Kent State University
Hamed, Ahmed M.
United States, College Station
Texas A&m University
Harris, John William
United States, New Haven
Yale University
He, Liang
United States, West Lafayette
Purdue University
Heppelmann, Steven F.
United States, University Park
Pennsylvania State University
Heppelmann, S.
United States, Upton
Brookhaven National Laboratory
Hoffmann, Gerald W.
United States, Austin
The University of Texas at Austin
Horvat, Stephen P.
United States, New Haven
Yale University
Huang, Bingchu
United States, Chicago
University of Illinois at Chicago
Huang, Huangzhong
United States, Los Angeles
University of California, Los Angeles
Huang, Xinjie
China, Beijing
Tsinghua University
Humanic, Thomas J.
United States, Columbus
The Ohio State University
Igo, George J.
United States, Los Angeles
University of California, Los Angeles
Jacobs, W. W.
United States, Bloomington
Indiana University Bloomington
Kabana, Sonia K.
United States, Kent
Kent State University
Kauder, Kolja
United States, Detroit
Wayne State University
Klein, Spencer R.
United States, Berkeley
Lawrence Berkeley National Laboratory
Kumar, Lokesh Ashok
India, Chandigarh
Panjab University
Lednický, Richard I.
Russian Federation, Dubna
Joint Institute for Nuclear Research, Dubna
Li, Xiaomei
United States, Philadelphia
Temple University
Li, Y. B.
China, Beijing
Tsinghua University
Magdy, Niseem
Egypt, Cairo
World Laboratory for Cosmology and Particle Physics Wlcapp
Nasim, Md H.
United States, Los Angeles
University of California, Los Angeles
Odyniec, Grażyna J.
United States, Berkeley
Lawrence Berkeley National Laboratory
Planinić, Mirko
Croatia, Zagreb
University of Zagreb
Posik, Matt
United States, Philadelphia
Temple University
Rogachevskiy, Oleg V.
Russian Federation, Dubna
Joint Institute for Nuclear Research, Dubna
Sahoo, Nihar Ranjan
United States, College Station
Texas A&m University
Sahu, Pradip Kumar
India, Bhubaneswar
Institute of Physics Bhubaneswar
Sarkar, Amal
India, Mumbai
Indian Institute of Technology Bombay
Spinka, Harold M.
United States, Lemont
Argonne National Laboratory
Šumbera, Michal
Czech Republic, Rez
Nuclear Physics Institute of the Academy of Sciences of the Czech Republic V. V. I.
Sun, Zhiyu
China, Lanzhou
Institute of Modern Physics Chinese Academy of Sciences
Tawfik, Abdel Nasser
Egypt, Cairo
World Laboratory for Cosmology and Particle Physics Wlcapp
Tripathy, Sushanta K.
India, Bhubaneswar
Institute of Physics Bhubaneswar
Vasiliev, Andrey N.
Russian Federation, Protvino
Institut Fiziki Vysokikh Energii
Vokál, S.
Russian Federation, Dubna
Joint Institute for Nuclear Research, Dubna
Xiao, Zhigang
China, Beijing
Tsinghua University
Xu, Nu
United States, Berkeley
Lawrence Berkeley National Laboratory
Yang, Yanyun
China, Lanzhou
Institute of Modern Physics Chinese Academy of Sciences
Yepes, Pablo P.
United States, Houston
Rice University
Yip, Kin
United States, Upton
Brookhaven National Laboratory
Zhang, Zhiqing
China, Shanghai
Shanghai Institute of Applied Physics, Chinese Academy of Sciences
Statistics
Citations: 60
Authors: 125
Affiliations: 52
Identifiers
Doi:
10.1038/nature15724
ISSN:
00280836
Research Areas
Cancer
Study Approach
Quantitative