First Measurement of the Cross Section for the Production of a W Boson in Association with a Single Charm Quark
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چکیده
We present a measurement of the Wc production cross section using soft muon tagging of charm jets. In the W+1 and W+2 jet data sample selected within ∼1.8 fb−1 of proton-antiproton collision data at √ s = 1.96 TeV, we identify jets with a muon from the semileptonic decay of the candidate c-quark. We study the charge correlation of the W boson with the muon. After considering the sources of background, the same-sign subtracted sample is used to measure the Wc contribution. We measure σwc(PT(c) > 8GeV/c, | η(c) |< 3.0) × BR(W → `ν) = 28.5 ± 8.2(stat) −4.4(sys) ± 1.7(lum) pb.
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تاریخ انتشار 2007