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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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
30 March 2010
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2010, Volume: 81, Issue: 5, Pages: 1-18 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.81.052010 |
| Online Access: | 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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| Author Notes: | J.P. Lees, A. Adametz, J. Marks, S. Schenk, U. Uwer [und 456 weitere Personen] |
| Summary: | 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 is based on 469 fb−1 of integrated luminosity collected at PEP-II with the BABAR detector at e+e− center-of-mass energies near 10.6 GeV. |
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| Item Description: | Gesehen am 10.03.2023 Im Titel ist "eta" als griechischer Buchstabe dargestellt |
| Physical Description: | Online Resource |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.81.052010 |