期刊
PHYSICAL REVIEW LETTERS
卷 103, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.092001
关键词
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资金
- DOE
- NSF (USA)
- CEA [CNRS/IN2P3]
- STFC [PP/E000487/1, ST/F00754X/1, ST/H000992/1, ST/H001166/1, ST/F007418/1, ST/H00095X/1, PP/F000863/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H001166/1, PP/E000487/1, ST/H00095X/1, ST/F007418/1, ST/F00754X/1, ST/H000992/1, PP/D004284/1, PP/F000863/1] Funding Source: researchfish
We report observation of the electroweak production of single top quarks in pp collisions at s=1.96 TeV based on 2.3 fb(-1) of data collected by the D0 detector at the Fermilab Tevatron Collider. Using events containing an isolated electron or muon and missing transverse energy, together with jets originating from the fragmentation of b quarks, we measure a cross section of sigma(pp -> tb+X,tqb+X)=3.94 +/- 0.88 pb. The probability to measure a cross section at this value or higher in the absence of signal is 2.5x10(-7), corresponding to a 5.0 standard deviation significance for the observation.
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