Measurement of {gamma}{sub ee}(J/{psi}), {gamma}{sub tot}(J/{psi}), and {gamma}{sub ee}[{psi}(2S)]/{gamma}{sub ee}(J/{psi})
Journal Article
·
· Physical Review. D, Particles Fields
- Rensselaer Polytechnic Institute, Troy, New York 12180 (United States)
- University of Rochester, Rochester, New York 14627 (United States)
- Southern Methodist University, Dallas, Texas 75275 (United States)
- Syracuse University, Syracuse, New York 13244 (United States)
Using data acquired with the CLEO detector at the CESR e{sup +}e{sup -} collider at {radical}(s)=3.773 GeV, we measure the cross section for the radiative return process e{sup +}e{sup -}{yields}{gamma}J/{psi}, J/{psi}{yields}{mu}{sup +}{mu}{sup -}, resulting in B(J/{psi}{yields}{mu}{sup +}{mu}{sup -})x{gamma}{sub ee}(J/{psi})=0.3384{+-}0.0058{+-}0.0071 keV, {gamma}{sub ee}(J/{psi})=5.68{+-}0.11{+-}0.13 keV, and {gamma}{sub tot}(J/{psi})=95.5{+-}2.4{+-}2.4 keV, in which the errors are statistical and systematic, respectively. We also determine the ratio {gamma}{sub ee}[{psi}(2S)]/{gamma}{sub ee}(J/{psi})=0.45{+-}0.01{+-}0.02.
- OSTI ID:
- 20776819
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 73, Issue 5; Other Information: DOI: 10.1103/PhysRevD.73.051103; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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