Search for direct production of the f 1 (1285) resonance in e + e − collisions
Physics Letters B, ISSN: 0370-2693, Vol: 800, Page: 135074
2020
- 13Citations
- 4Captures
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Article Description
A search for direct production of the f1(1285) resonance in e+e− annihilation is performed with the SND detector at the VEPP-2000 e+e− collider. The analysis is based on data with an integrated luminosity of 15.1 pb −1 accumulated in the center-of-mass energy range 1.2–1.4 GeV. Two e+e−→f1(1285) candidate events are found at the peak of the resonance and zero events beyond the resonance. The significance of the e+e−→f1(1285) signal is 2.5 σ. The cross section at the maximum of the resonance is found to be σ(e+e−→f1)=45−24+33 pb. The corresponding branching fraction B(f1(1285)→e+e−)=(5.1−2.7+3.7)×10−9. We consider this result as a first indication of the process e+e−→f1(1285). The measured branching fraction is consistent with the theoretical prediction.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0370269319307968; http://dx.doi.org/10.1016/j.physletb.2019.135074; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85074728193&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0370269319307968; https://api.elsevier.com/content/article/PII:S0370269319307968?httpAccept=text/xml; https://api.elsevier.com/content/article/PII:S0370269319307968?httpAccept=text/plain; https://dul.usage.elsevier.com/doi/; https://dx.doi.org/10.1016/j.physletb.2019.135074
Elsevier BV
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