We report a measurement of the fraction of b quarks produced diffractively in (p) over bar p collisions at root s = 1.8 TeV. Diffraction is identified by the absence of particles in a forward pseudorapidity region. From events with an electron of transverse momentum 9.5 < p(T)(e) < 20 GeV/c within the pseudorapidity region eta < 1.1, the ratio of diffractive to total b-quark production rates is found to be R-(b) over bar b = [0.62 +/- 0.19(stat) +/- 0.16(syst)]%. This result is comparable in magnitude to corresponding ratios for W and dijet production but significantly lower than expectations based on factorization.

T., A., H., A., A., A., M. G., A., P., A., S. R., A., et al. (2000). Observation of diffractive b-quark production at the Fermilab, Tevatron. PHYSICAL REVIEW LETTERS, 84(2), 232-237 [10.1103/PhysRevLett.84.232].

Observation of diffractive b-quark production at the Fermilab, Tevatron

PAOLETTI, RICCARDO;
2000-01-01

Abstract

We report a measurement of the fraction of b quarks produced diffractively in (p) over bar p collisions at root s = 1.8 TeV. Diffraction is identified by the absence of particles in a forward pseudorapidity region. From events with an electron of transverse momentum 9.5 < p(T)(e) < 20 GeV/c within the pseudorapidity region eta < 1.1, the ratio of diffractive to total b-quark production rates is found to be R-(b) over bar b = [0.62 +/- 0.19(stat) +/- 0.16(syst)]%. This result is comparable in magnitude to corresponding ratios for W and dijet production but significantly lower than expectations based on factorization.
2000
T., A., H., A., A., A., M. G., A., P., A., S. R., A., et al. (2000). Observation of diffractive b-quark production at the Fermilab, Tevatron. PHYSICAL REVIEW LETTERS, 84(2), 232-237 [10.1103/PhysRevLett.84.232].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39637
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