TY - JOUR
T1 - Measurement of the tt‾ production cross-section in pp collisions at √s=5.02 TeV with the ATLAS detector
AU - Kabana, Sonia
AU - Lagouri, Theodota
AU - Olivares Pino, Sebastian Andres
AU - ATLAS Collaboration
N1 - Publisher Copyright:
© 2023, The Author(s).
PY - 2023/6/23
Y1 - 2023/6/23
N2 - The inclusive top-quark pair (tt‾) production cross-section sigma(tt‾) is measured in proton-proton collisions at a centre-of-mass energy root s = 5.02TeV, using 257 pb(-1) of data collected in 2017 by the ATLAS experiment at the LHC. The tt‾ over bar cross-section is measured in both the dilepton and single-lepton final states of the t t system and then combined. The combination of the two measurements yields
σtt‾ = 67.5 +/- 0.9 (stat.) +/- 2.3 (syst.) +/- 1.1 (lumi.) +/- 0.2 (beam) pb,
where the four uncertainties reflect the limited size of the data sample, experimental and theoretical systematic effects, and imperfect knowledge of both the integrated luminosity and the LHC beam energy, giving a total uncertainty of 3.9%. The result is in agreement with theoretical quantum chromodynamic calculations at next-to-next-to-leading order in the strong coupling constant, including the resummation of next-to-next-to-leading logarithmic soft-gluon terms, and constrains the parton distribution functions of the proton at large Bjorken-x.
AB - The inclusive top-quark pair (tt‾) production cross-section sigma(tt‾) is measured in proton-proton collisions at a centre-of-mass energy root s = 5.02TeV, using 257 pb(-1) of data collected in 2017 by the ATLAS experiment at the LHC. The tt‾ over bar cross-section is measured in both the dilepton and single-lepton final states of the t t system and then combined. The combination of the two measurements yields
σtt‾ = 67.5 +/- 0.9 (stat.) +/- 2.3 (syst.) +/- 1.1 (lumi.) +/- 0.2 (beam) pb,
where the four uncertainties reflect the limited size of the data sample, experimental and theoretical systematic effects, and imperfect knowledge of both the integrated luminosity and the LHC beam energy, giving a total uncertainty of 3.9%. The result is in agreement with theoretical quantum chromodynamic calculations at next-to-next-to-leading order in the strong coupling constant, including the resummation of next-to-next-to-leading logarithmic soft-gluon terms, and constrains the parton distribution functions of the proton at large Bjorken-x.
KW - Hadron-Hadron Scattering
KW - Top Physics
KW - Dispersión hadrón-hadrón
KW - Física superior
UR - https://www.scopus.com/pages/publications/85163625862
UR - https://publons.com/wos-op/publon/61520956/
U2 - 10.1007/JHEP06(2023)138
DO - 10.1007/JHEP06(2023)138
M3 - Article
SN - 1126-6708
VL - 2023
SP - 1
EP - 53
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 6
M1 - 138
ER -