5th International Workshop on Top Quark Physics | |
Precise top quark cross-section results at LHC | |
Andrea, J.^1 | |
not available, 23 rue du Loess, 67037 Strasbourg cedex 2, France^1 | |
关键词: CMS detectors; Combined measurements; Dilepton events; Dileptons; Measurements of; Proton proton collisions; Top quarks; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/452/1/012025/pdf DOI : 10.1088/1742-6596/452/1/012025 |
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来源: IOP | |
【 摘 要 】
The measurements of the inclusive t cross section is presented for proton-proton collisions recorded at = 7 and 8 TeV by the ATLAS and the CMS experiments using the lepton+jets and the dilepton events. The most precise single measurement at 7 TeV is σt 161.9 ± 2.5(stat.)+5.1-5.0(syst.)±3.6(lumi.) pb, using a luminosity of 2.3 fb-1. The measurements from the two experiments are also combined to reach higher precision. With a luminosity of about 1 fb-1, the combined cross-section is σt 173.3±2.3(stat.)±9.8(syst.) pb. At = 8 TeV, σt is measured in the lepton+jets and dilepton channels with the CMS detector and the corresponding combined measurement is σt 227 ± 3(stat.)±11(syst.)±10(lumi.) pb.
【 预 览 】
Files | Size | Format | View |
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Precise top quark cross-section results at LHC | 495KB | download |