Coherent ρ 0 photoproduction in ultra-peripheral Pb-Pb collisions at √sNN=2.76 TeV
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Título: | Coherent ρ 0 photoproduction in ultra-peripheral Pb-Pb collisions at √sNN=2.76 TeV |
Autor/a: | ALICE Collaboration Armesto Pérez, Néstor González Ferreiro, Elena Pajares Vales, Carlos Salgado López, Carlos Alberto |
Centro/Departamento: | Universidade de Santiago de Compostela. Departamento de Física de Partículas Universidade de Santiago de Compostela. Instituto Galego de Física de Altas Enerxías (IGFAE) |
Palabras chave: | Hadron-hadron scattering | |
Data: | 2015 |
Editor: | Springer |
Cita bibliográfica: | Adam, J., Adamová, D., Aggarwal, M.M. et al. Coherent ρ 0 photoproduction in ultra-peripheral Pb-Pb collisions at √sNN=2.76 TeV. J. High Energ. Phys. 2015, 95 (2015). https://doi.org/10.1007/JHEP09(2015)095 |
Resumo: | We report the first measurement at the LHC of coherent photoproduction of ρ 0 mesons in ultra-peripheral Pb-Pb collisions. The invariant mass and transverse momentum distributions for ρ 0 production are studied in the + − decay channel at mid-rapidity. The production cross section in the rapidity range |y| < 0.5 is found to be d /dy = 425 ± 10 (stat.) +42 −50 (sys.) mb. Coherent ρ 0 production is studied with and without requirement of nuclear breakup, and the fractional yields for various breakup scenarios are presented. The results are compared with those from lower energies and with model predictions |
Versión do editor: | https://doi.org/10.1007/JHEP09(2015)095 |
URI: | http://hdl.handle.net/10347/21529 |
DOI: | 10.1007/JHEP09(2015)095 |
E-ISSN: | 1029-8479 |
Dereitos: | © CERN, for the benefit of the ALICE Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made |
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