Acciarriz, M. ; Achard, P. ; Adriani, O. ; Aguilar-Benitez, M. ; Gurtu, A. ; et., al (1999) χc2 formation in two-photon collisions at LEP Physics Letters B, 453 (1-2). pp. 73-82. ISSN 0370-2693
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S0370-2693(99)00279-8
Abstract
Two-photon formation of the charmonium resonance χc2 has been studied with the L3 detector at LEP. The χc2 is identified through its decay χc2→γJ/ψ, with a subsequent decay J/ψ→e+− or J/ψ→μ+μ-. With an integrated luminosity of 140 pb-1 at √S⋍ 91 GeV and 52 pb-1 at √S⋍ 183 GeV, we measure the two-photon width of the χc2 to be Γγγ(χc2)=1.02± 0.40 (stat.)±0.15 (sys.)±0.09(BR.) keV.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 83547 |
| Deposited On: | 16 May 2012 13:48 |
| Last Modified: | 16 May 2012 13:48 |
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