Scientific article
Open access

Production of χc1 and χc2 in pp Collisions at s√=1.8TeV

ContributorsCDF Collaboration
Published inPhysical review letters, vol. 86, no. 18, p. 3963-3968
Publication date2001

We have measured the ratio of prompt production rates of the charmonium states χc1 and χc2 in 110pb−1 of pp¯ collisions at s√=1.8TeV. The photon from their decay into J/ψγ is reconstructed through conversion into e+e− pairs. The energy resolution this technique provides makes the resolution of the two states possible. We find the ratio of production cross sections σχc2σχc1=0.96±0.27(stat)±0.11(syst) for events with pT(J/ψ)>4.0GeV/c, |η(J/ψ)|<0.6, and pT(γ)>1.0GeV/c.

Citation (ISO format)
CDF Collaboration. Production of <em>χ<sub>c1</sub></em> and <em>χ<sub>c2</sub></em> in <em>pp</em> Collisions at s√=1.8TeV. In: Physical review letters, 2001, vol. 86, n° 18, p. 3963–3968. doi: 10.1103/PhysRevLett.86.3963
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Article (Published version)
ISSN of the journal0031-9007

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