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Advances in High Energy Physics Volume 2019 ,2019-01-17
A Method for the Direct Absolute Measurement of J/ψ Decay with ψ(3686) Data Set
Research Article
Fang Yan 1 Bo Zheng 1
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DOI:10.1155/2019/2567070
Received 2018-11-09, accepted for publication 2018-12-12, Published 2018-12-12
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摘要

To take the full advantage of the ψ(3686) data set collected at e+e- collider at τ-charm energy region, a tag method is developed to directly measure the J/ψ meson decay branching fractions absolutely. The J/ψ meson decay can be measured with the J/ψ sample tagged by the two soft charged pions from the decay ψ(3686)→J/ψπ+π-. This method is illustrated by comparing the input and output branching fractions of J/ψ→γη with 106 million inclusive ψ(3686) Monte Carlo samples. The consistent result confirms the validity of the tag method.

授权许可

Copyright © 2019 Fang Yan and Bo Zheng. 2019
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

通讯作者

Bo Zheng.School of Nuclear Science and Technology, University of South China, Hengyang, Hunan 421001, China, usc.edu.cn.zhengbo_usc@163.com

推荐引用方式

Fang Yan,Bo Zheng. A Method for the Direct Absolute Measurement of J/ψ Decay with ψ(3686) Data Set. Advances in High Energy Physics ,Vol.2019(2019)

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