https://doi.org/10.1140/epjc/s10052-016-4360-x
Regular Article - Theoretical Physics
production associated with light hadrons at the B-factories and the future Super B-factories
1
Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, 100871, People’s Republic of China
2
School of Science, Guizhou Minzu University, Guiyang, 550025, People’s Republic of China
3
School of Science, Chongqing University of Posts and Telecommunications, Chongqing, 400065, People’s Republic of China
4
Institute of Digital Medicine, School of Biomedical Engineering, Third Military Medical University, Chongqing, 400038, People’s Republic of China
* e-mail: hfzhang@ihep.ac.cn
Received:
28
June
2016
Accepted:
7
September
2016
Published online:
24
September
2016
We present a complete study of the associated production of the meson with light hadrons in 
collisions at the B-factory energy, which is demonstrated to be one of the best laboratories for testing the colour-octet (CO) mechanism. The colour-singlet contributions are evaluated up to 
, while the CO ones are evaluated up to 
. For the first time, the angular distribution of the 
production is studied at QCD next-to-leading order. We find that the channel dominates the total cross section, while the 
one exhibits its importance in the angular distribution, which turns out to be downward going with respect to 
. This can be considered as the most distinct signal for the CO mechanism.
© The Author(s), 2016
