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Production of Xc1 and Xc2 in pp(overbar) collisions at (square root)s = 1.8 TeV

Cerrito, L; Lancaster, M; Lane, JB; McGivern, D; Snihur, R; Waters, DS; Wyatt, AC; (2001) Production of Xc1 and Xc2 in pp(overbar) collisions at (square root)s = 1.8 TeV. Physical Review Letters , 86 (18) 3963 - 3968. 10.1103/PhysRevLett.86.3963. Green open access

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Abstract

We have measured the ratio of prompt production rates of the charmonium states χc1 and χc2 in 110pb-1 of pp̅ 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 σχc2/σχc1 = 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.

Type: Article
Title: Production of Xc1 and Xc2 in pp(overbar) collisions at (square root)s = 1.8 TeV
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.86.3963
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.86.3963
Language: English
Additional information: © 2001 The American Physical Society
Keywords: Elementary Particle Physics, production
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/131907
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