Journal article
Measurement of the phase between strong and electromagnetic amplitudes in the decay J/ψ → ϕη
- Abstract:
- The first direct measurement of the relative phase between the strong and electromagnetic amplitudes for a J/ψ decaying into a vector-pseudoscalar final state is performed using 26 energy points of e+e− annihilation data between 3.00 GeV and 3.12 GeV. The data sets were collected by the BESIII detector with a total integrated luminosity of 452 pb−1. By investigating the interference pattern in the cross section lineshape of e+e−→ ϕη, the relative phase between the strong and electromagnetic amplitudes of J/ψ decay is determined to be within [133°, 228°] at 68% confidence level.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.2MB, Terms of use)
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- Publisher copy:
- 10.1007/jhep11(2025)077
Authors
+ United States Department of Energy
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- Funder identifier:
- https://ror.org/01bj3aw27
+ National Research Foundation of Korea
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- Funder identifier:
- https://ror.org/013aysd81
+ Knut and Alice Wallenberg Foundation
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- Funder identifier:
- https://ror.org/004hzzk67
- Publisher:
- Springer
- Journal:
- Journal of High Energy Physics More from this journal
- Volume:
- 2025
- Issue:
- 11
- Article number:
- 77
- Publication date:
- 2025-11-13
- Acceptance date:
- 2025-08-08
- DOI:
- EISSN:
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1029-8479
- ISSN:
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1126-6708
- Language:
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English
- Keywords:
- Pubs id:
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2338427
- Local pid:
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pubs:2338427
- Source identifiers:
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3483701
- Deposit date:
-
2025-11-18
- ARK identifier:
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Terms of use
- Copyright date:
- 2025
- Licence:
- CC Attribution (CC BY)
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