Direct X(3872) production in e+e- collisions

被引：16
|
作者：
Denig, Achim [1 ,2 ]
Guo, Feng-Kun [3 ,4 ]
Hanhart, Christoph [5 ,6 ]
Nefediev, Alexey V. [7 ,8 ,9 ]
机构：
[1] Johannes Gutenberg Univ Mainz, Inst Nucl Phys, D-55099 Mainz, Germany
[2] Johannes Gutenberg Univ Mainz, PRISMA Cluster Excellence, D-55099 Mainz, Germany
[3] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany
[4] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany
[5] Forschungszentrum Julich, Inst Adv Simulat, Inst Kernphys, D-52425 Julich, Germany
[6] Julich Ctr Hadron Phys, D-52425 Julich, Germany
[7] Inst Theoret & Expt Phys, Moscow 117218, Russia
[8] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia
[9] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia
来源：
PHYSICS LETTERS B | 2014年 / 736卷
关键词：
Exotic hadrons; Charmonium;
D O I：
10.1016/j.physletb.2014.07.027
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Direct production of the charmonium-like state X(3872) in e(+)e(-) collisions is considered in the framework of the vector meson dominance model. An order-of-magnitude estimate for the width Gamma(X -> e(+)e(-)) is found to be greater than or similar to 0.03 eV. The same approach applied to the chi(c1) charmonium decay predicts the corresponding width of the order 0.1 eV in agreement with earlier estimates. Experimental perspectives for the direct production of the 1(++) charmonia in e(+)e(-) collisions are briefly discussed. (C) 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
引用
收藏
页码：221 / 225
页数：5
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