We present a study of J/psi and psi(2S) production in p (p) over bar collisions, at root s = 1.8 TeV with the CDF detector at Fermilab. The J/psi and psi(2S) mesons are reconstructed using their mu(+)mu(-) decay modes. We have measured the inclusive production cross section for both mesons as a function of their transverse momentum in the central region, eta < 0.6. We also measure the fraction of these events originating from b hadrons. We thus extract individual cross-sections for J/psi and psi(2S) mesons from b-quark decays and prompt production. We find a large excess (approximately a factor of 50) of direct psi(2S) production compared with predictions from the color singlet model.

F., A., H., A., A., A., M. G., A., S. R., A., D., A., et al. (1997). J/psi and psi(2S) production in p(p)over-bar collisions at root s=1.8 TeV. PHYSICAL REVIEW LETTERS, 79(4), 572-577 [10.1103/PhysRevLett.79.572].

J/psi and psi(2S) production in p(p)over-bar collisions at root s=1.8 TeV

PAOLETTI, RICCARDO;
1997

Abstract

We present a study of J/psi and psi(2S) production in p (p) over bar collisions, at root s = 1.8 TeV with the CDF detector at Fermilab. The J/psi and psi(2S) mesons are reconstructed using their mu(+)mu(-) decay modes. We have measured the inclusive production cross section for both mesons as a function of their transverse momentum in the central region, eta < 0.6. We also measure the fraction of these events originating from b hadrons. We thus extract individual cross-sections for J/psi and psi(2S) mesons from b-quark decays and prompt production. We find a large excess (approximately a factor of 50) of direct psi(2S) production compared with predictions from the color singlet model.
F., A., H., A., A., A., M. G., A., S. R., A., D., A., et al. (1997). J/psi and psi(2S) production in p(p)over-bar collisions at root s=1.8 TeV. PHYSICAL REVIEW LETTERS, 79(4), 572-577 [10.1103/PhysRevLett.79.572].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11365/39162
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