First Measurement of the Fraction of Top Quark Pair Production Through Gluon-Gluon Fusion

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We present the first measurement of {sigma}(gG {yields} t{bar t})/{sigma}(p{bar p} {yields} t{bar t}). We use 0.96 fb{sup -1} of {radical}s = 1.96 TeV p{bar p} collision data recorded with the CDF II detector at Fermilab. We identify the candidate t{bar t} events with a high-energy charged lepton, a neutrino candidate, and four or more jets with at least one identified as originating from a b quark. Using charged particles with low transverse momentum in t{bar t} events, we find {sigma}(gg {yields} t{bar t})/{sigma}(p{bar p} {yields} t{bar t}) = 0.07 {+-} 0.14(stat) {+-} 0.07(syst), in agreement with the standard model ... continued below

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CDF Collaboration December 1, 2007.

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We present the first measurement of {sigma}(gG {yields} t{bar t})/{sigma}(p{bar p} {yields} t{bar t}). We use 0.96 fb{sup -1} of {radical}s = 1.96 TeV p{bar p} collision data recorded with the CDF II detector at Fermilab. We identify the candidate t{bar t} events with a high-energy charged lepton, a neutrino candidate, and four or more jets with at least one identified as originating from a b quark. Using charged particles with low transverse momentum in t{bar t} events, we find {sigma}(gg {yields} t{bar t})/{sigma}(p{bar p} {yields} t{bar t}) = 0.07 {+-} 0.14(stat) {+-} 0.07(syst), in agreement with the standard model NLO prediction of 0.15 {+-} 0.05.

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  • Report No.: FERMILAB-PUB-07-665-E
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 921334
  • Archival Resource Key: ark:/67531/metadc895967

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  • December 1, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 9, 2016, 4:46 p.m.

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CDF Collaboration. First Measurement of the Fraction of Top Quark Pair Production Through Gluon-Gluon Fusion, article, December 1, 2007; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc895967/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.