First measurement of the forward-backward charge asymmetry in top quark pair production

Journal Article · Sat Dec 01 00:00:00 EST 2007 · Phys.Rev.Lett.

DOI:https://doi.org/10.1103/PhysRevLett.100.142002· OSTI ID:1892197

Abazov, V. M.

We present the first measurement of the integrated forward-backward charge asymmetry in top-antitop quark pair (ttbar) production in proton-antiproton collisions in the lepton plus jets final state. Using a b-jet tagging algorithm and kinematic reconstruction assuming ttbar+X production and decay, a sample of 0.9fb-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 ttbar+X production via a Z' resonance.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Contributing Organization: D0
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1892197
• Report Number(s): FERMILAB-PUB-07-645-E; arXiv:0712.0851; oai:inspirehep.net:769720
• Journal Information: Phys.Rev.Lett., Vol. 100
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS