prikaz prve stranice dokumenta Dielectron production at midrapidity at low transverse momentum in peripheral and semi- peripheral Pb–Pb collisions at √sNN = 5.02 TeV
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Dielectron production at midrapidity at low transverse momentum in peripheral and semi- peripheral Pb–Pb collisions at √sNN = 5.02 TeV
Journal of High Energy Physics, 2023 (2023), 06; 024. https://doi.org/10.1007/jhep06(2023)024
(ALICE Collaboration) Acharya, S.; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ...; Karatović, David; ...; Lončar, Petra; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Vicković, Linda; ...; Zurlo, N. Više autora...

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Acharya, S., Erhardt, F., Gotovac, S., Jerčić, M., Karatović, D., Lončar, P. ... Zurlo, N. (2023). Dielectron production at midrapidity at low transverse momentum in peripheral and semi- peripheral Pb–Pb collisions at √sNN = 5.02 TeV. Journal of High Energy Physics, 2023. (06). doi: 10.1007/jhep06(2023)024

Acharya, S., et al. "Dielectron production at midrapidity at low transverse momentum in peripheral and semi- peripheral Pb–Pb collisions at √sNN = 5.02 TeV." Journal of High Energy Physics, vol. 2023, br. 06, 2023. https://doi.org/10.1007/jhep06(2023)024

Acharya, S., Filip Erhardt, Sven Gotovac, Marko Jerčić, David Karatović, Petra Lončar, Eugen Mudnić, et al. "Dielectron production at midrapidity at low transverse momentum in peripheral and semi- peripheral Pb–Pb collisions at √sNN = 5.02 TeV." Journal of High Energy Physics 2023, br. 06 (2023). https://doi.org/10.1007/jhep06(2023)024

Acharya, S., et al. (2023) 'Dielectron production at midrapidity at low transverse momentum in peripheral and semi- peripheral Pb–Pb collisions at √sNN = 5.02 TeV', Journal of High Energy Physics, 2023(06). doi: 10.1007/jhep06(2023)024

Acharya S, Erhardt F, Gotovac S, Jerčić M, Karatović D, Lončar P, i sur.. Dielectron production at midrapidity at low transverse momentum in peripheral and semi- peripheral Pb–Pb collisions at √sNN = 5.02 TeV. Journal of High Energy Physics [Internet]. 2023. [pristupljeno 16.11.2024.];2023(06). doi: 10.1007/jhep06(2023)024

S. Acharya, et al., "Dielectron production at midrapidity at low transverse momentum in peripheral and semi- peripheral Pb–Pb collisions at √sNN = 5.02 TeV", Journal of High Energy Physics, vol. 2023, br. 06, 2023. [Online]. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:830274. [Citirano: 16.11.2024.]

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Naslov (engleski)Dielectron production at midrapidity at low transverse momentum in peripheral and semi- peripheral Pb–Pb collisions at √sNN = 5.02 TeV
AutorS. Acharya
Autor
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AutorFilip Erhardt
Autor
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AutorSven Gotovac
Autor
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AutorMarko Jerčić
Autor
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AutorDavid Karatović
Autor
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AutorPetra Lončar
Autor
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AutorEugen Mudnić
Autor
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AutorMirko Planinić
Autor
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AutorNikola Poljak
Autor
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AutorLinda Vicković
Autor
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AutorN. Zurlo
KolaboracijaALICE Collaboration
Autorova ustanovaSveučilište u Zagrebu
Prirodoslovno-matematički fakultet
(Fizički odsjek)
Znanstveno / umjetničko
područje, polje i grana		PRIRODNE ZNANOSTI
Fizika
Sažetak (engleski)
The first measurement of the e+e− pair production at low lepton pair transverse momentum (pT, ee) and low invariant mass (mee) in non-central Pb–Pb collisions at √sNN = 5.02 TeV at the LHC is presented. The dielectron production is studied with the ALICE detector at midrapidity (|ηe| < 0.8) as a function of invariant mass (0.4≤ mee < 2.7 GeV/c^2) in the 50–70% and 70–90% centrality classes for pT, ee < 0.1 GeV/c, and as a function of pT, ee in three mee intervals in the most peripheral Pb–Pb collisions. Below a pT, ee of 0.1 GeV/c, a clear excess of e+e − pairs is found compared to the expectations from known hadronic sources and predictions of thermal radiation from the medium. The mee excess spectra are reproduced, within uncertainties, by different predictions of the photon–photon production of dielectrons, where the photons originate from the extremely strong electromagnetic fields generated by the highly Lorentz-contracted Pb nuclei. Lowest- order quantum electrodynamic (QED) calculations, as well as a model that takes into account the impact- parameter dependence of the average transverse momentum of the photons, also provide a good description of the pT, ee spectra. The measured √<p^2T, ee> of the excess pT, ee spectrum in peripheral Pb–Pb collisions is found to be comparable to the values observed previously at RHIC in a similar phase-space region.
Ključne riječi (engleski)
Jezikengleski
Vrsta publikacijeZnanstveni rad - Izvorni znanstveni rad
Status objaveObjavljen
Vrsta recenzijeRecenziran - međunarodna recenzija
Verzija publikacijeObjavljena verzija rada (izdavačev PDF)
Naslov časopisaJournal of High Energy Physics
Brojčani podacivol. 2023, br. 06, 024
p-ISSN1126-6708
e-ISSN1029-8479
DOIhttps://doi.org/10.1007/jhep06(2023)024
URN:NBNurn:nbn:hr:217:830274
Datum objave publikacije2023
URL dokumentahttps://link.springer.com/article/10.1007/JHEP06(2023)024
Vrsta resursaTekst
Prava pristupaOtvoreni pristup
Uvjeti korištenjaIkona licence Imenovanje 4.0 međunarodna (CC BY 4.0)
Javna napomenaOpen Access . This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. Received 25 May 2022; Accepted 08 October 2022; Published 05 June 2023.
Datum i vrijeme pohrane2023-08-23 09:39:07