| Literature DB >> 26894705 |
K Kisamori1,2, S Shimoura1, H Miya1,2, S Michimasa1, S Ota1, M Assie3, H Baba2, T Baba4, D Beaumel2,3, M Dozono2, T Fujii1,2, N Fukuda2, S Go1,2, F Hammache3, E Ideguchi5, N Inabe2, M Itoh6, D Kameda2, S Kawase1, T Kawabata4, M Kobayashi1, Y Kondo2,7, T Kubo2, Y Kubota1,2, M Kurata-Nishimura2, C S Lee1,2, Y Maeda8, H Matsubara9, K Miki5, T Nishi2,10, S Noji11, S Sakaguchi2,12, H Sakai2, Y Sasamoto1, M Sasano2, H Sato2, Y Shimizu2, A Stolz11, H Suzuki2, M Takaki1, H Takeda2, S Takeuchi2, A Tamii5, L Tang1, H Tokieda1, M Tsumura4, T Uesaka2, K Yako1, Y Yanagisawa2, R Yokoyama1, K Yoshida2.
Abstract
A candidate resonant tetraneutron state is found in the missing-mass spectrum obtained in the double-charge-exchange reaction ^{4}He(^{8}He,^{8}Be) at 186 MeV/u. The energy of the state is 0.83±0.65(stat)±1.25(syst) MeV above the threshold of four-neutron decay with a significance level of 4.9σ. Utilizing the large positive Q value of the (^{8}He,^{8}Be) reaction, an almost recoilless condition of the four-neutron system was achieved so as to obtain a weakly interacting four-neutron system efficiently.Entities:
Year: 2016 PMID： 26894705 DOI： 10.1103/PhysRevLett.116.052501
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161