Central-to-peripheral nuclear modification factors in Pb-Pb collisions at √sNN = 17.3 GeV

F Antinori, Paul Bacon, Ian Bloodworth, Stephen Bull, Rory Clarke, David Evans, Goronwy Tudor Jones, Predrag Jovanovic, Anton Jusko, John Kinson, Roman Lietava, Paul Norman, Richard Platt, Orlando Villalobos Baillie, Milan Votruba

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25 Citations (Scopus)


We present central-to-peripheral nuclear modification factors, R-CP, for the (PT) distributions of K-S(0), Lambda, Lambda, and negatively charged particles, measured at central rapidity in Pb-Pb collisions at top SPS energy. The data cover the 55% most central fraction of the inelastic cross section. The K-S(0) and Lambda R-CP((PT)) are similar in shape to those measured at root sNN = 200 GeV at RHIC, though they are larger in absolute value. We have compared our K-S(0) R-CP data to a theoretical calculation. The prediction overestimates the data at (PT) approximate to 3-4 GeV/c, unless sizeable parton energy loss is included in the calculation. (c) 2005 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)17-25
Number of pages9
JournalPhysics Letters B
Publication statusPublished - 8 Sept 2005


  • strange particles
  • nucleus-nucleus collisions


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