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- Title
A Method for the Direct Absolute Measurement of J/ψ Decay with ψ(3686) Data Set.
- Authors
Yan, Fang; Zheng, Bo
- Abstract
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.
- Subjects
MESON decay; ACQUISITION of data; MEASUREMENT; COLLIDERS (Nuclear physics); CHARM particles; MONTE Carlo method
- Publication
Advances in High Energy Physics, 2019, p1
- ISSN
1687-7357
- Publication type
Article
- DOI
10.1155/2019/2567070