Antideuteron and deuteron production in midcentral Pb+Pb collisions at 158A GeV

Production of deuterons and antideuterons was studied by the NA49 experiment in the 23.5% most central Pb+Pb collisions at the top CERN Super Proton Synchroton (SPS) energy of √s[subscript NN]=17.3 GeV. Invariant yields for d̅ and d were measured as a function of centrality in the center-of-mass rap...

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Bibliographic Details
Main Authors: Roland, Christof E, Roland, Gunther M
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: American Physical Society 2012
Online Access:http://hdl.handle.net/1721.1/71681
https://orcid.org/0000-0001-8983-2169
Description
Summary:Production of deuterons and antideuterons was studied by the NA49 experiment in the 23.5% most central Pb+Pb collisions at the top CERN Super Proton Synchroton (SPS) energy of √s[subscript NN]=17.3 GeV. Invariant yields for d̅ and d were measured as a function of centrality in the center-of-mass rapidity range −1.2<y<−0.6. Results for d̅ (d) together with previously published p̅ (p) measurements are discussed in the context of the coalescence model. The coalescence parameters B[subscript 2] were deduced as a function of transverse momentum pt and collision centrality.