Journal article

Publication year: 2001

Pages: 1-8

Journal: Physics Letters B

Volume number: 513

Issue number: 1-2

ISSN: 0370-2693

Open access status: Green

DOI Link: https://doi.org/10.1016/S0370-2693(01)00744-4

Publisher: Elsevier

Abstract: 
We calculate open charm production in Pb + Pb reactions at SPS energies within the HSD transport approach - which is based on string, quark, diquark (q, (q) over bar, qq, (q) over bar(q) over bar) and hadronic degrees of freedom - including the production of open charm pairs from secondary 'meson'-'baryon' (or quark-diquark and antiquark-diquark) collisions. It is argued that at collision energies close to the c (c) over bar pair threshold the dominant production mechanism is related to the two body (or quasi two body) reactions piN --> (D) over bar((D) over bar*)Lambda (c), (Sigma (c)). Estimates within the framework of the Quark-Gluon String model suggest cross sections of a few Pb for piN --> (D) over bar Lambda (c) in the region of 1 GeV above threshold. The dynamical transport calculations for Pb + Pb at 160 A GeV indicate that the open charm enhancement reported by the NA50 Collaboration might be due to such secondary reaction mechanisms. (C) 2001 Elsevier Science B.V. All rights reserved.

Harvard Citation style: Cassing, W., Kondratyuk, L., Lykasov, G. and Rzjanin, M. (2001) Open charm enhancement by secondary interactions in relativistic nucleus-nucleus collisions?, Physics Letters B, 513(1-2), pp. 1-8. https://doi.org/10.1016/S0370-2693(01)00744-4

APA Citation style: Cassing, W., Kondratyuk, L., Lykasov, G., & Rzjanin, M. (2001). Open charm enhancement by secondary interactions in relativistic nucleus-nucleus collisions?. Physics Letters B. 513(1-2), 1-8. https://doi.org/10.1016/S0370-2693(01)00744-4