期刊
PHYSICAL REVIEW LETTERS
卷 100, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.100.142002
关键词
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资金
- STFC [PP/E000487/1, ST/F00754X/1, ST/F007418/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F007418/1, PP/E000487/1, ST/F00754X/1] Funding Source: researchfish
We present the first measurement of the integrated forward-backward charge asymmetry in top-quark-top-antiquark pair (t (t) over bar) production in proton-antiproton (p (p) over bar) collisions in the lepton+jets final state. Using a b-jet tagging algorithm and kinematic reconstruction assuming t (t) over bar +X production and decay, a sample of 0.9 fb(-1) of data, collected by the D0 experiment at the Fermilab Tevatron Collider, is used to measure the asymmetry for different jet multiplicities. The result is also used to set upper limits on t (t) over bar +X production via a Z' resonance.
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