Exclusive dielectron production in ultraperipheral Pb+Pb collisions at psNN = 5.02 TeV with ATLAS
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10475977" target="_blank" >RIV/00216208:11320/23:10475977 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=lBNwuQF25e" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=lBNwuQF25e</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP06(2023)182" target="_blank" >10.1007/JHEP06(2023)182</a>
Alternative languages
Result language
angličtina
Original language name
Exclusive dielectron production in ultraperipheral Pb+Pb collisions at psNN = 5.02 TeV with ATLAS
Original language description
Exclusive production of dielectron pairs, ! e+e-, is studied using Lint =1.72 nb-1 of data from ultraperipheral collisions of lead nuclei at psNN = 5.02TeV recordedby the ATLAS detector at the LHC. The process of interest proceeds via photon-photoninteractions in the strong electromagnetic fields of relativistic lead nuclei. Dielectron productionis measured in the fiducial region defined by following requirements: electron transversemomentum peT > 2.5 GeV, absolute electron pseudorapidity |e| < 2.5, dielectron invariantmass mee > 5 GeV, and dielectron transverse momentum peeT < 2 GeV. Differentialcross-sections are measured as a function of mee, average peT, absolute dielectron rapidity|yee|, and scattering angle in the dielectron rest frame, | cos |, in the inclusive sample,and also with a requirement of no activity in the forward direction. The total integratedfiducial cross-section is measured to be 215 +- 1(stat.) +23-20(syst.) +- 4(lumi.) μb. Within experimentaluncertainties the measured integrated cross-section is in good agreement withthe QED predictions from the Monte Carlo programs Starlight and SuperChic, confirmingthe broad features of the initial photon fluxes. The differential cross-sections showsystematic differences from these predictions which are more pronounced at high |yee| and| cos | values.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of High Energy Physics
ISSN
1029-8479
e-ISSN
1029-8479
Volume of the periodical
2023
Issue of the periodical within the volume
06
Country of publishing house
DE - GERMANY
Number of pages
42
Pages from-to
182
UT code for WoS article
001069745300005
EID of the result in the Scopus database
2-s2.0-85163887123