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Coherent photoproduction of ρ0 vector mesons in ultra-peripheral Pb-Pb collisions at √sNN=5.02 TeV

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Cross sections for the coherent photoproduction of ρ0 vector mesons in ultra-peripheral Pb-Pb collisions at sNN$$ \sqrt{{\mathrm{s}}_{\mathrm{NN}}} $$= 5.02 TeV are reported. The measurements, which rely on the π+π− decay channel, are presented in three regions of rapidity covering the range |y| <...

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Main Authors: 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) , Schmah, Alexander (Author) , Schmidt, Marten Ole (Author) , Stachel, Johanna (Author) , Windelband, Bernd (Author) , Yüncü, Alperen (Author)
Corporate Author: ALICE (Author)
Format: Article (Journal)
Language:English
Published: 04 June 2020
In: Journal of high energy physics
Year: 2020, Issue: 6
ISSN:1029-8479
DOI:10.1007/JHEP06(2020)035
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP06(2020)035
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Author Notes:the ALICE collaboration
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Summary:Cross sections for the coherent photoproduction of ρ0 vector mesons in ultra-peripheral Pb-Pb collisions at sNN$$ \sqrt{{\mathrm{s}}_{\mathrm{NN}}} $$= 5.02 TeV are reported. The measurements, which rely on the π+π− decay channel, are presented in three regions of rapidity covering the range |y| < 0.8. For each rapidity interval, cross sections are shown for different nuclear-breakup classes defined according to the presence of neutrons measured in the zero-degree calorimeters. The results are compared with predictions based on different models of nuclear shadowing. Finally, the observation of a coherently produced resonance-like structure with a mass around 1.7 GeV/c2 and a width of about 140 MeV/c2 is reported and compared with similar observations from other experiments.
Item Description:The ALICE collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim, M. Kim, M.K. Köhler, L. Leardini, J. Lopez, N.A. Martin, Y.C. Pachmayer, K. Reygers, A. Schmah, M.O. Schmidt, J. Stache, B. Windelband, A. Yüncü [und viele weitere]
Im Titel ist die erste "0" bei p0 hochgestellt, der Ausdruck "sNN" steht unter dem Wurzelsymbol, "NN" ist dabei tiefgestellt
Gesehen am 25.11.2020
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP06(2020)035

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