t anti-t production cross section measurement using soft electron tagging in p anti-p collisions at √s = 1.96-TeV
- Harvard Univ., Cambridge, MA (United States)
We measure the production cross section of t$$\bar{t}$$ events in p$$\bar{p}$$ collisions at √s = 1.96 TeV. The data was collected by the CDF experiment in Run 2 of the Tevatron accelerator at the Fermi National Accelerator Laboratory between 2002 and 2007. 1.7 fb-1 of data was recorded during this time period. We reconstruct t$$\bar{t}$$ events in the lepton+jets channel, whereby one W boson - resulting from the decay of the top quark pairs - decays leptonically and the other hadronically. The dominant background to this process is the production of W bosons in association with multiple jets. To distinguish t$$\bar{t}$$ from background, we identify soft electrons from the semileptonic decay of heavy flavor jets produced in t$$\bar{t}$$ events. We measure a cross section of σ$$\bar{p}$$ = 7.8 ± 2.4(stat) ± 1.6(syst) ± 0.5(lumi).
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 975167
- Report Number(s):
- FERMILAB-THESIS-2008-93; TRN: US1002403
- Country of Publication:
- United States
- Language:
- English
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