A strong signal for double parton scattering (DP) is observed in a 16 pb(-1) sample of (p) over bar p(-1) sample of (p) over bar p --> gamma + 3 jets + X data from the CDF experiment at the Fermilab Tevatron. The process-independent DP parameter, sigma(eff), is obtained without reference to theoretical calculations by comparing observed DP events to events with hard scatterings at separate (p) over bar p collisions. The result, sigma(eff) = (14.5 +/- 1.7(-2.3)(+1.7)) mb. represents a significant improvement over previous measurements. For the first time, the Feynman x dependence of the sigma(eff) parameter is investigated, and no dependence is seen.

F., A., H., A., A., A., M. G., A., S. R., A., D., A., et al. (1997). Measurement of double parton scattering in (p)over-bar-p collisions at root s=1.8 TeV. PHYSICAL REVIEW LETTERS, 79(4), 584-589 [10.1103/PhysRevLett.79.584].

Measurement of double parton scattering in (p)over-bar-p collisions at root s=1.8 TeV

PAOLETTI, RICCARDO;
1997-01-01

Abstract

A strong signal for double parton scattering (DP) is observed in a 16 pb(-1) sample of (p) over bar p(-1) sample of (p) over bar p --> gamma + 3 jets + X data from the CDF experiment at the Fermilab Tevatron. The process-independent DP parameter, sigma(eff), is obtained without reference to theoretical calculations by comparing observed DP events to events with hard scatterings at separate (p) over bar p collisions. The result, sigma(eff) = (14.5 +/- 1.7(-2.3)(+1.7)) mb. represents a significant improvement over previous measurements. For the first time, the Feynman x dependence of the sigma(eff) parameter is investigated, and no dependence is seen.
1997
F., A., H., A., A., A., M. G., A., S. R., A., D., A., et al. (1997). Measurement of double parton scattering in (p)over-bar-p collisions at root s=1.8 TeV. PHYSICAL REVIEW LETTERS, 79(4), 584-589 [10.1103/PhysRevLett.79.584].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39200
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