First observation of top quark production in the forward region

LHCb Collaboration, W. Barter

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Top quark production in the forward region in proton-proton collisions is observed for the first time. The W+b final state with W→μν is reconstructed using muons with a transverse momentum, pT, larger than 25 GeV in the pseudorapidity range 2.020  GeV. The results are based on data corresponding to integrated luminosities of 1.0 and 2.0  fb−1 collected at center-of-mass energies of 7 and 8 TeV by LHCb. The inclusive top quark production cross sections in the fiducial region are σ(top)[7  TeV]=239±53(stat)±33(syst)±24(theory)  fb,σ(top)[8  TeV]=289±43(stat)±40(syst)±29(theory)  fb.These results, along with the observed differential yields and charge asymmetries, are in agreement with next-to-leading order standard model predictions.
Original languageEnglish
Article number112001
Pages (from-to)1-10
Number of pages10
JournalPhysical Review Letters
Issue number11
Publication statusPublished - 8 Sept 2015


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