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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 544651.0, MPI für Physik / MPI für Physik
Three-Dimensional two-pion source image from Pb+Pb Collisions at Sqrts_NN=17.3 GeV: New constraints for source breakup dynamics
Authors:NA49 Collaboration; Alt, C.; Eckardt, V.; Schmitz, N.; Seyboth, P.; et al.
Date of Publication (YYYY-MM-DD):2010
Title of Journal:Physics Letters B
Journal Abbrev.:Phys.Lett.B
Issue / Number:685
Start Page:41
End Page:46
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:Source imaging methodology is used to provide a three-dimensional two-pion source function for mid-rapidity pion pairs with $p_T<70$ MeV/c in central ($0-7%$) Pb+Pb collisions at $\sqrt s_{NN}$=17.3 GeV. Prominent non-Gaussian tails are observed in the pion pair transverse momentum (outward) and in the beam (longitudinal) directions. Model calculations reproduce them with the assumption of Bjorken longitudinal boost invariance and transverse flow blast-wave dynamics coupled with "outside-in burning" in the transverse direction; they also yield a proper time for breakup and emission duration for the pion source.
Classification / Thesaurus:NA49
Comment of the Author/Creator:Six pages 4 figs. Submitted for publication
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2010-238
URL:http://www.slac.stanford.edu/spires/find/hep/www?r...
URL:http://arXiv.org/abs/arxiv:0809.1445
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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