ϕ-meson production in In–In collisions at Elab=158A GeV: Evidence for relics of a thermal phase
- Yields and transverse mass distributions of the ϕ-mesons reconstructed in the ϕ→μ+μ− channel in In+In collisions at Elab=158A GeV are calculated within an integrated Boltzmann+hydrodynamics hybrid approach based on the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) transport model with an intermediate hydrodynamic stage. The analysis is performed for various centralities and a comparison with the corresponding NA60 data in the muon channel is presented. We find that the hybrid model, that embeds an intermediate locally equilibrated phase subsequently mapped into the transport dynamics according to thermal phase-space distributions, gives a good description of the experimental data, both in yield and slope. On the contrary, the pure transport model calculations tend to fail in catching the general properties of the ϕ meson production: not only the yield, but also the slope of the mT spectra, compare poorly with the experimental observations at top SPS energies.
Author: | Elvira SantiniGND, Hannah PetersenORCiDGND, Marcus BleicherORCiDGND |
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URN: | urn:nbn:de:hebis:30:3-764886 |
DOI: | https://doi.org/10.1016/j.physletb.2010.02.085 |
ISSN: | 0370-2693 |
Parent Title (English): | Physics Letters B |
Publisher: | Elsevier |
Place of publication: | Amsterdam |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2010/03/17 |
Date of first Publication: | 2010/03/17 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2023/10/09 |
Tag: | Monte Carlo simulations; Particle and resonance production; Relativistic heavy-ion collisions |
Volume: | 687 |
Issue: | 4 |
Page Number: | 7 |
First Page: | 320 |
Last Page: | 326 |
HeBIS-PPN: | 513366296 |
Institutes: | Physik |
Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS) | |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Sammlungen: | Universitätspublikationen |
Licence (German): | Creative Commons - CC BY - Namensnennung 4.0 International |