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Observation of Diffractive b-Quark Production at the Fermilab Tevatron

CollaborationWith : Clark, Allan Geoffrey / Kambara, Hisanori / Speer, Thomas / Strumia Michelini, Federica / Wu, Xin
Published in Physical Review Letters. 2000, vol. 84, no. 2, p. 232-237
Abstract We report a measurement of the fraction of b quarks produced diffractively in p¯p collisions at 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<peT<20 GeV/ c within the pseudorapidity region |η|<1.1, the ratio of diffractive to total b-quark production rates is found to be Rb¯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.
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CDF COLLABORATION. Observation of Diffractive b-Quark Production at the Fermilab Tevatron. In: Physical Review Letters, 2000, vol. 84, n° 2, p. 232-237. https://archive-ouverte.unige.ch/unige:37882

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Deposited on : 2014-06-17

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