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Measurement of the eta and eta(') transition form factors at q(2)=112 GeV2

Abstract:
We report a study of the processes e+e-→ηγ and e+e-→η′γ at a center-of-mass energy of 10.58 GeV, using a 232fb-1 data sample collected with the BABAR detector at the PEP-II collider at SLAC. We observe 20-5+6ηγ and 50-7+8η′γ events over small backgrounds, and measure the cross sections σ(e+e- →ηγ)=4.5-1.1+1.2±0.3fb and σ(e+e- →η′γ)=5.4±0.8±0.3fb. The corresponding transition form factors at q2=112GeV2 are q2|Fη(q2)|=0.229±0. 030±0.008GeV, and q2|Fη′(q2)|=0.251±0.019±0. 008GeV, respectively. © 2006 The American Physical Society.
Publication status:
Published

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Publisher copy:
10.1103/PhysRevD.74.012002

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Journal:
Physical Review D
Volume:
74
Issue:
1
Publication date:
2006-07-01
DOI:
EISSN:
1550-2368
ISSN:
1550-7998
Source identifiers:
13854
Language:
English
Pubs id:
pubs:13854
UUID:
uuid:3cf20abe-2a8f-4692-beee-f9d4ec814391
Local pid:
pubs:13854
Deposit date:
2012-12-19

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