ALICE luminosity determination for Pb-Pb collisions at √sNN = 5.02 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00585203" target="_blank" >RIV/68378271:_____/24:00585203 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/24:00585203

Výsledek na webu

<a href="https://doi.org/10.1088/1748-0221/19/02/P02039" target="_blank" >https://doi.org/10.1088/1748-0221/19/02/P02039</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1748-0221/19/02/P02039" target="_blank" >10.1088/1748-0221/19/02/P02039</a>

Jazyk výsledku

angličtina

Název v původním jazyce

ALICE luminosity determination for Pb-Pb collisions at √sNN = 5.02 TeV

Popis výsledku v původním jazyce

Luminosity determination within the ALICE experiment is based on the measurement, in van der Meer scans, of the cross sections for visible processes involving one or more detectors (visible cross sections). In 2015 and 2018, the Large Hadron Collider provided Pb-Pb collisions at a centre-of-mass energy per nucleon pair of root s(NN) = 5.02 TeV. Two visible cross sections, associated with particle detection in the Zero Degree Calorimeter (ZDC) and in the V0 detector, were measured in a van der Meer scan. This article describes the experimental set-up and the analysis procedure, and presents the measurement results. The analysis involves a comprehensive study of beam-related effects and an improved fitting procedure, compared to previous ALICE studies, for the extraction of the visible cross section. The resulting uncertainty of both the ZDC-based and the V0-based luminosity measurement for the full sample is 2.5%. The inelastic cross section for hadronic interactions in Pb-Pb collisions at root s(NN) = 5.02 TeV, obtained by efficiency correction of the V0-based visible cross section, was measured to be 7.67 +/- 0.25 b, in agreement with predictions using the Glauber model.

Název v anglickém jazyce

ALICE luminosity determination for Pb-Pb collisions at √sNN = 5.02 TeV

Popis výsledku anglicky

Luminosity determination within the ALICE experiment is based on the measurement, in van der Meer scans, of the cross sections for visible processes involving one or more detectors (visible cross sections). In 2015 and 2018, the Large Hadron Collider provided Pb-Pb collisions at a centre-of-mass energy per nucleon pair of root s(NN) = 5.02 TeV. Two visible cross sections, associated with particle detection in the Zero Degree Calorimeter (ZDC) and in the V0 detector, were measured in a van der Meer scan. This article describes the experimental set-up and the analysis procedure, and presents the measurement results. The analysis involves a comprehensive study of beam-related effects and an improved fitting procedure, compared to previous ALICE studies, for the extraction of the visible cross section. The resulting uncertainty of both the ZDC-based and the V0-based luminosity measurement for the full sample is 2.5%. The inelastic cross section for hadronic interactions in Pb-Pb collisions at root s(NN) = 5.02 TeV, obtained by efficiency correction of the V0-based visible cross section, was measured to be 7.67 +/- 0.25 b, in agreement with predictions using the Glauber model.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of Instrumentation

ISSN

1748-0221

e-ISSN

1748-0221

Svazek periodika

19

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

29

Strana od-do

P02039

Kód UT WoS článku

001185805400002

EID výsledku v databázi Scopus

2-s2.0-85187168113