Electronic width of the ψ(3770) resonance interfering with the background Full article
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Physical Review D: Particles and fields
ISSN: 2470-0010 , E-ISSN: 2470-0029 |
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| Output data | Year: 2021, Volume: 103, Number: 7, Pages: 076017 Pages count : 1 DOI: 10.1103/physrevd.103.076017 | ||
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Abstract:
Methods for extracting the ψ(3770)→e+e− decay width from the data on the reaction cross section e+e−→D¯D are discussed. Attention is drawn to the absence of the generally accepted method for determining Γψ(3770)e+e− in the presence of interference between the contributions of the ψ(3770) resonance and background. It is shown that the model for the experimentally measured D meson form factor, which satisfies the requirement of the Watson theorem and takes into account the contribution of the complex of the mixed ψ(3770) and ψ(2S) resonances, allows us to uniquely determine the value of Γψ(3770)e+e− by fitting. The Γψ(3770)e+e− values found from the data processing are compared with the estimates in the potential models.
Cite:
Achasov N. .
, Shestakov G. .
Electronic width of the ψ(3770) resonance interfering with the background
Physical Review D: Particles and fields. 2021. V.103. N7. P.076017. DOI: 10.1103/physrevd.103.076017 WOS Scopus OpenAlex
Electronic width of the ψ(3770) resonance interfering with the background
Physical Review D: Particles and fields. 2021. V.103. N7. P.076017. DOI: 10.1103/physrevd.103.076017 WOS Scopus OpenAlex
Identifiers:
| Web of science: | WOS:000648580600007 |
| Scopus: | 2-s2.0-85105465831 |
| OpenAlex: | W3126307545 |