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Acharya, Shreyasi
[Author];
Angelov, Venelin
[Author];
Arslandok, Mesut
[Author];
Danisch, Meike
[Author];
Feuillard, Victor
[Author];
Glässel, Peter
[Author];
Kim, Jiyoung
[Author];
Kim, Minjung
[Author];
Köhler, Markus Konrad
[Author];
Leardini, Lucia
[Author];
López, Jorge
[Author];
Martin, Nicole Alice
[Author];
Pachmayer, Yvonne C.
[Author];
Reygers, Klaus
[Author];
Schicker, Rainer
[Author];
Schmah, Alexander
[Author];
Schmidt, Marten Ole
[Author];
Stachel, Johanna
[Author];
Stiefelmaier, Stephan
[Author];
Windelband, Bernd
[Author];
Yüncü, Alperen
[Author]
;
ALICE Körperschaft
Dielectron production in proton-proton and proton-lead collisions at √sNN=5.02 TeV
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- Media type: E-Article
- Title: Dielectron production in proton-proton and proton-lead collisions at √sNN=5.02 TeV
- Contributor: Acharya, Shreyasi [VerfasserIn]; Angelov, Venelin [VerfasserIn]; Arslandok, Mesut [VerfasserIn]; Danisch, Meike [VerfasserIn]; Feuillard, Victor [VerfasserIn]; Glässel, Peter [VerfasserIn]; Kim, Jiyoung [VerfasserIn]; Kim, Minjung [VerfasserIn]; Köhler, Markus Konrad [VerfasserIn]; Leardini, Lucia [VerfasserIn]; López, Jorge [VerfasserIn]; Martin, Nicole Alice [VerfasserIn]; Pachmayer, Yvonne C. [VerfasserIn]; Reygers, Klaus [VerfasserIn]; Schicker, Rainer [VerfasserIn]; Schmah, Alexander [VerfasserIn]; Schmidt, Marten Ole [VerfasserIn]; Stachel, Johanna [VerfasserIn]; Stiefelmaier, Stephan [VerfasserIn]; Windelband, Bernd [VerfasserIn]; Yüncü, Alperen [VerfasserIn]
-
imprint:
25 November 2020
- Published in: Physical review ; 102(2020), 5, Seite 055204
- Language: English
- DOI: 10.1103/PhysRevC.102.055204
- ISSN: 2469-9993
- Identifier:
- Origination:
-
Footnote:
Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol, "NN" ist dabei tiefgestellt
ALICE Collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, J.G. Feuillard, P. Glässel, J. Kim, M. Kim, M.K. Köhler, L. Leardini, J.A. Lopez, N.A. Martin, Y. Pachmayer, K. Reygers, R. Schicker, A. Schmah, M.O. Schmidt, J. Stachel, S.F. Stiefelmaier, B. Windelband, A. Yuncu [und viele weitere]
- Description: The first measurements of dielectron production at midrapidity (|ηe|<0.8) in proton-proton and proton-lead collisions at √sNN=5.02TeV at the LHC are presented. The dielectron cross section is measured with the ALICE detector as a function of the invariant mass mee and the pair transverse momentum pT,ee in the ranges mee<3.5 GeV/c2 and pT,ee<8 GeV/c, in both collision systems. In proton-proton collisions, the charm and beauty cross sections are determined at midrapidity from a fit to the data with two different event generators. This complements the existing dielectron measurements performed at √s=7 and 13 TeV. The slope of the √s dependence of the three measurements is described by FONLL calculations. The dielectron cross section measured in proton-lead collisions is in agreement, within the current precision, with the expected dielectron production without any nuclear matter effects for e+e− pairs from open heavy-flavor hadron decays. For the first time at LHC energies, the dielectron production in proton-lead and proton-proton collisions are directly compared at the same √sNN via the dielectron nuclear modification factor RpPb. The measurements are compared to model calculations including cold nuclear matter effects, or additional sources of dielectrons from thermal radiation.
- Access State: Open Access