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Phys. Rev. Lett. 100, 091803 (2008) [7 pages]

First Measurement of W Boson Production in Association with a Single Charm Quark in pp̅ Collisions at s=1.96  TeV

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T. Aaltonen et al. CDF Collaboration
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Received 19 November 2007; published 7 March 2008

We present the first measurement of the production cross section of a W boson with a single charm quark (c) in pp̅ collisions at s=1.96  TeV, using soft muon tagging of c jets. In a data sample of ∼1.8  fb-1, recorded with the Collider Detector at Fermilab II detector at the Fermilab Tevatron, we select events with W+1 or 2 jets. We use the charge correlation between the W and the muon from the semileptonic decay of a charm hadron to extract the Wc signal. We measure σWc(pTc>20  GeV/c,|ηc|<1.5)×BR(Wν)=9.8±3.2  pb, in agreement with theoretical expectations.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.091803
DOI:
10.1103/PhysRevLett.100.091803
PACS:
13.38.Be, 13.20.Fc, 13.85.Lg