Dielectron Widths of the S-, D-Vector Bottomonium States

被引：38

作者：

Badalian, A. M. ^{[1
]}

Bakker, B. L. G. ^{[2
]}

Danilkin, I. V. ^{[1
,3
]}

机构：

[1] Inst Theoret & Expt Phys, Moscow 117259, Russia

[2] Vrije Univ Amsterdam, Dept Phys & Astron, Amsterdam, Netherlands

[3] Moscow Engn Phys Inst, Moscow 115409, Russia

来源：

PHYSICS OF ATOMIC NUCLEI | 2010年 / 73卷 / 01期

关键词：

D-WAVE QUARKONIUM; HEAVY QUARKONIA; QCD; MODEL; TRANSITIONS; CHARMONIUM; MESONS; LIGHT; EXCITATIONS; DECAYS;

D O I：

10.1134/S1063778810010163

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：

The dielectron widths of Gamma(nS) (n = 1, ... , 7) and vector decay constants are calculated using the relativistic string Hamiltonian with a universal interaction. For Gamma(nS) (n = 1, 2, 3) the dielectron widths and their ratios are obtained in full agreement with the latest CLEO data. For Gamma(10580) and Gamma(11020) a good agreement with experiment is reached only if the 4S-3D mixing (with a mixing angle theta = 27 degrees +/- 4 degrees) and 6S-5D mixing (with theta = 40 degrees +/- 5 inverted perpendicular) are taken into account. The possibility to observe higher " mixed D-wave" resonances, (Gamma) over tilde (n(3)D(1)) with n = 3, 4, 5 is discussed. In particular, (Gamma) over tilde(approximate to 11120), originating from the pure 5(3)D(1) state, can acquire a rather large dielectron width, 130 eV, so that this resonance may become manifest in the e(+)e(-) experiments. On the contrary, the widths of pure D-wave states are very small, Gamma(ee)(n(3)D(1)) <= 2 eV.

引用

页码：138 / 149

页数：12

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