We report the first observation of diffractively produced W bosons. In a sample of W --> e nu events produced in collisions at root s = 1.8 TeV, we find an excess of events with a forward rapidity gap, which is attributed to diffraction. The probability that this excess is consistent with nondiffractive production is 1.1 x 10(-4) (3.8 sigma). The relatively low fraction of W + jet events observed within this excess implies that mainly quarks from the Pomeron, which mediates diffraction, participate in W production. The diffractive to nondiffractive W production ratio is found to be R(W) = (1.15 +/- 0.55)%.

F., A., H., A., A., A., M. G., A., S. R., A., D., A., et al. (1997). Observation of diffractive W-boson production at the Fermilab tevatron. PHYSICAL REVIEW LETTERS, 78(14), 2698-2703 [10.1103/PhysRevLett.78.2698].

Observation of diffractive W-boson production at the Fermilab tevatron

PAOLETTI, RICCARDO;
1997-01-01

Abstract

We report the first observation of diffractively produced W bosons. In a sample of W --> e nu events produced in collisions at root s = 1.8 TeV, we find an excess of events with a forward rapidity gap, which is attributed to diffraction. The probability that this excess is consistent with nondiffractive production is 1.1 x 10(-4) (3.8 sigma). The relatively low fraction of W + jet events observed within this excess implies that mainly quarks from the Pomeron, which mediates diffraction, participate in W production. The diffractive to nondiffractive W production ratio is found to be R(W) = (1.15 +/- 0.55)%.
1997
F., A., H., A., A., A., M. G., A., S. R., A., D., A., et al. (1997). Observation of diffractive W-boson production at the Fermilab tevatron. PHYSICAL REVIEW LETTERS, 78(14), 2698-2703 [10.1103/PhysRevLett.78.2698].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39280
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