Measurement of the inclusive t(t)over-bar cross section in final states with at least one lepton and additional jets with 302 pb-1 of pp collisions at √s=5.02 TeV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10512874" target="_blank" >RIV/00216208:11320/25:10512874 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Fw9Tq57ZNN" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Fw9Tq57ZNN</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP04(2025)099" target="_blank" >10.1007/JHEP04(2025)099</a>

Result language
angličtina
Original language name
Measurement of the inclusive t(t)over-bar cross section in final states with at least one lepton and additional jets with 302 pb-1 of pp collisions at √s=5.02 TeV
Original language description
A measurement of the top quark pair (t (t) over bar over bar) production cross section in proton-proton collisions at a centre-of-mass energy of 5.02TeV is presented. The data were collected at the LHC in autumn 2017, in dedicated runs with low-energy and low-intensity conditions with respect to the default configuration, and correspond to an integrated luminosity of 302 pb(-1). The measurement is performed using events with one electron or muon, and multiple jets, at least one of them being identified as originating from a b quark (b tagged). Events are classified based on the number of all reconstructed jets and of b-tagged jets. Multivariate analysis techniques are used to enhance the separation between the signal and backgrounds. The measured cross section is 62.5 +/- 1.6 (stat)(-2.5)(+2.6) (syst) +/- 1.2 (lumi) pb. A combination with the result in the dilepton channel based on the same data set yields a value of 62.3 +/- 1.5 (stat)+/- 2.4 (syst)+/- 1.2 (lumi) pb, to be compared with the standard model prediction of 69.5(-3.7)(+3.5) pb at next-to-next-to-leading order in perturbative quantum chromodynamics.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10300 - Physical sciences

Project
<a href="/en/project/LM2023040" target="_blank" >LM2023040: Research infrastructure for experiments at CERN</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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