Measurements of baryon pair decays of chi(cJ) mesons
Measurements of baryon pair decays of chi(cJ) mesons
复制标题
chi(cJ)介子重子对衰变的测量
DOI:
10.1103/physrevd.87.032007
复制
发表时间:
2012-11
期刊:
影响因子:
--
通讯作者:
Zou, J. H.
中科院分区:
文献类型:
--
作者:
Zhu, Z. A.;Zhuang, J.;Zou, B. S.;Zou, J. H.
Using 106 x 10(6) psi' decays collected with the BESIII detector at the BEPCII, three decays of chi(cJ) (J = 0, 1, 2) with baryon pairs (Lambda(Lambda) over bar, Sigma(0)(Sigma) over bar (0),Sigma(+)(Sigma) over bar (-)) in the final state have been studied. The branching fractions are measured to be B(chi(c0,1,2) -> Lambda(Lambda) over bar) = (33.3 +/- 2.0 +/- 2.6) x 10(-5), (12.2 +/- 1.1 +/- 1.1) x 10(-5), (20.8 +/- 1.6 +/- 2.3) x 10(-5), B(chi(c0,1,2) -> Sigma(0)(Sigma) over bar (0)) = (47.8 +/- 3.4 +/- 3.9) x 10(-5), (3.8 +/- 1.0 +/- 0.5) x 10(-5), (4.0 +/- 1.1 +/- 0.5) x 10(-5), and B(chi(c0,1,2) -> Sigma(+)(Sigma) over bar (-)) = (45.4 +/- 4.2 +/- 3.0) x 10(-5), (5.4 +/- 1.5 +/- 0.5) x 10(-5), (4.9 +/- 1.9 +/- 0.7) x 10(-5), where the first error is statistical and the second is systematic. Upper limits on the branching fractions for the decays of chi(c1,2) -> Sigma(0)(Sigma) over bar (0), Sigma(+)(Sigma) over bar (-) are estimated to be B(chi(c1) -> Sigma(0)(Sigma) over bar (0)) 6.2 x 10(-5), B(chi(c2) -> Sigma(0) Sigma(+) Sigma(+)
DOI:
10.4337/9780857930415.00013
发表时间:
2010-12
期刊:
--
影响因子:
--
作者:
Zhang Yunling
通讯作者:
Zhang Yunling
影响因子:
5
作者:
V. Savinov;T. Coan;V. Fadeyev;Y. Gao;Y. Maravin;I. Narsky;R. Stroynowski;J. Ye;T. Wlodek
通讯作者:
V. Savinov;T. Coan;V. Fadeyev;Y. Gao;Y. Maravin;I. Narsky;R. Stroynowski;J. Ye;T. Wlodek
DOI:
10.4337/9781849805575.00011
发表时间:
2002-01
期刊:
IMF Staff Country Reports
影响因子:
--
作者:
T. Scudder
通讯作者:
T. Scudder