Measurement of the γγ*→[eta]c transition form factor

We study the reaction e+e−→e+e−ηc, ηc→KSK±π∓ and obtain ηc mass and width values 2982.2±0.4±1.6 MeV/c2 and 31.7±1.2±0.8 MeV, respectively. We find Γ(ηc→γγ)B(ηc→K¯¯¯¯Kπ)=0.374±0.009±0.031 keV, and measure the γγ∗→ηc transition form factor in the momentum transfer range from 2 to 50 GeV2. The analysis...

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Hauptverfasser: Lees, Jean-Pierre (VerfasserIn) , Adametz, Aleksandra (VerfasserIn) , Marks, Jörg (VerfasserIn) , Schenk, Sebastian (VerfasserIn) , Uwer, Ulrich (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 30 March 2010
In: Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2010, Jahrgang: 81, Heft: 5, Pages: 1-18
ISSN:1550-2368
DOI:10.1103/PhysRevD.81.052010
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.81.052010
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.81.052010
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Verfasserangaben:J.P. Lees, A. Adametz, J. Marks, S. Schenk, U. Uwer [und 456 weitere Personen]

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