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.
Central-to-peripheral nuclear modification factors in Pb-Pb collisions at √sNN = 17.3 GeV/c / Antinori, F., Bacon, P.a., Badala, A., Barbera, R., Belogianni, A., Bloodworth, I.j., Bombara, M., Bruno, G.E., Bull, S.a., Caliandro, R., Campbell, M., Carena, W., Carrer, N., Clarke, R.f., Dainese, A., Di Bari, D., Di Liberto, S., Divia, R., Elia, D., Evans, D., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 623:1-2(2005), pp. 17-25. [10.1016/j.physletb.2005.07.040]
Central-to-peripheral nuclear modification factors in Pb-Pb collisions at √sNN = 17.3 GeV/c
Bruno, G. E.;
2005
Abstract
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.| File | Dimensione | Formato | |
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