Measurement of the total cross section and ρ-parameter from elastic scattering in pp collisions at SQUARE ROOTs = 13 TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10476550" target="_blank" >RIV/00216208:11320/23:10476550 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=fOzb8DY7.r" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=fOzb8DY7.r</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-023-11436-8" target="_blank" >10.1140/epjc/s10052-023-11436-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of the total cross section and ρ-parameter from elastic scattering in pp collisions at SQUARE ROOTs = 13 TeV with the ATLAS detector

Popis výsledku v původním jazyce

In a special run of the LHC with β = 2.5 km, proton-proton elastic-scattering events were recorded at CMS = 13 TeV with an integrated luminosity of 340 μb-1using the ALFA subdetector of ATLAS in 2016. The elasticcross section was measured differentially in the Mandelstamt variable in the range from -t = 2.5 . 10-4 GeV2to -t = 0.46 GeV2 using 6.9 million elastic-scatteringcandidates. This paper presents measurements of the totalcross section σtot, parameters of the nuclear slope, and the ρ-parameter defined as the ratio of the real part to the imaginarypart of the elastic-scattering amplitude in the limit t RIGHTWARDS ARROW 0.These parameters are determined from a fit to the differentialelastic cross section using the optical theorem and differentparameterizations of the t-dependence. The results for σtotand ρ areσtot(pp RIGHTWARDS ARROW X) = 104.7 +- 1.1 mb, ρ= 0.098 +- 0.011.The uncertainty in σtot is dominated by the luminosity measurement, and in ρ by imperfect knowledge of the detector alignment and by modelling of the nuclear amplitude.

Název v anglickém jazyce

Measurement of the total cross section and ρ-parameter from elastic scattering in pp collisions at SQUARE ROOTs = 13 TeV with the ATLAS detector

Popis výsledku anglicky

In a special run of the LHC with β = 2.5 km, proton-proton elastic-scattering events were recorded at CMS = 13 TeV with an integrated luminosity of 340 μb-1using the ALFA subdetector of ATLAS in 2016. The elasticcross section was measured differentially in the Mandelstamt variable in the range from -t = 2.5 . 10-4 GeV2to -t = 0.46 GeV2 using 6.9 million elastic-scatteringcandidates. This paper presents measurements of the totalcross section σtot, parameters of the nuclear slope, and the ρ-parameter defined as the ratio of the real part to the imaginarypart of the elastic-scattering amplitude in the limit t RIGHTWARDS ARROW 0.These parameters are determined from a fit to the differentialelastic cross section using the optical theorem and differentparameterizations of the t-dependence. The results for σtotand ρ areσtot(pp RIGHTWARDS ARROW X) = 104.7 +- 1.1 mb, ρ= 0.098 +- 0.011.The uncertainty in σtot is dominated by the luminosity measurement, and in ρ by imperfect knowledge of the detector alignment and by modelling of the nuclear amplitude.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Svazek periodika

83

Číslo periodika v rámci svazku

Neuveden

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

49

Strana od-do

441

Kód UT WoS článku

001104629900004

EID výsledku v databázi Scopus

2-s2.0-85160419394