Recent results from BESIII

被引:0
|
作者
Yan, Wenbiao [1 ]
机构
[1] Univ Sci & Technol China, Hefei 230026, Peoples R China
关键词
DECAYS; MESONS;
D O I
10.1088/1742-6596/295/1/012055
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
In this talk, I will report recent results from BESIII Collaboration. (1) The chi(cJ) decay into pi(0)pi(0), eta eta and gamma V(V = rho, omega, phi) are presented and compared with that of theory calculation. (2) The first observation of chi(c1) -> phi phi and omega omega is displayed. Doubly OZI suppressed decay of chi(cJ) -> omega phi are observed for the first time. (3) The mass and decay of h(c)((1)P(1)) is important to learn about hyperfine(spin-spin) interaction of P wave states, and the hyperfine or triplet-singlet splitting determined by spin-spin term in QCD potential models. The mass and width of h(c) are measured, Br (psi' -> h(c)) and Br (h(c) -> gamma eta(c)) are firstly obtained. Some results are also compared with theory prediction. (4) In order to study nature of light scalar meson a(0) and f(0), The J/psi -> phi f(0) -> phi a(0) -> phi eta pi and chi(c1) -> a(0)pi(0) -> f(0)pi(0) -> pi(+)pi(-)pi(0) are performed. (5) The result of X(1835) in the eta'pi(+)pi(-) are also shown, the possibility that there are two new resonances is under further study.
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页数:8
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