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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

<a href="/cs/project/LM2023040" target="_blank" >LM2023040: Výzkumná infrastruktura pro experimenty v CERN</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Svazek periodika

neuveden

Číslo periodika v rámci svazku

04

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

44

Strana od-do

099

Kód UT WoS článku

001617792900001

EID výsledku v databázi Scopus

2-s2.0-105012450925