Central-to-peripheral nuclear modification factors in Pb-Pb collisions at &#8730;sNN = 17.3 GeV/c

Di Bari, Domenico; Bruno, Giuseppe Eugenio; Badala, A; Barbera, R; Belogianni, A; Bloodworth, Ij; Bombara, M; Bruno, Ge; Bull, Sa; Caliandro, R; Campbell, M; Carena, W; Carrer, N; Clarke, Rf; Dainese, A; Di Bari, D; Di Liberto, S; Divia, R; Elia, D; Evans, D; Feofilov, Ga; Fini, Ra; Ganoti, P; Ghidini, B; Grella, G; Helstrup, H; Hetland, Kf; Holme, Ak; Jacholkowski, A; Jones, Gt; Jovanovic, P; Jusko, A; Kamermans, R; Kinson, Jb; Knudson, K; Kondratiev, V; Kralik, I; Kravcakova, A; Kuijer, P; Lenti, V; Lietava, R; Lovhoiden, G; Manzari, V; Mazzoni, Ma; Meddi, F; Michalon, A; Morando, M; Norman, Pi; Palmeri, A; Pappalardo, Gs; Pastircak, B; Platt, Rj; Quercigh, E; Riggi, F; Rohrich, D; Romano, G; Safarik, K; Sandor, L; Schillings, E; Segato, G; Sene, M; Sene, R; Snoeys, W; Somarel, F; Spyropoulou Stassinaki, M; Staroba, P; Turrisi, R; Tveter, Ts; Urban, J; van de Ven, P; Vyvre, Pv; Vascotto, A; Vik, T; Baillie, Ov; Vinogradov, L; Virgili, T; Votruba, Mf; Vrlakova, J; Zavada, P.

doi:10.1016/j.physletb.2005.07.040

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.

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Titolo:	Central-to-peripheral nuclear modification factors in Pb-Pb collisions at √sNN = 17.3 GeV/c
Autori:	DI BARI, Domenico BRUNO, GIUSEPPE EUGENIO Badala A Barbera R Belogianni A Bloodworth IJ Bombara M Bruno GE Bull SA Caliandro R Campbell M Carena W Carrer N Clarke RF Dainese A Di Bari D Di Liberto S Divia R Elia D Evans D Feofilov GA Fini RA Ganoti P Ghidini B Grella G Helstrup H Hetland KF Holme AK Jacholkowski A Jones GT Jovanovic P Jusko A Kamermans R Kinson JB Knudson K Kondratiev V Kralik I Kravcakova A Kuijer P Lenti V Lietava R Lovhoiden G Manzari V Mazzoni MA Meddi F Michalon A Morando M Norman PI Palmeri A Pappalardo GS Pastircak B Platt RJ Quercigh E Riggi F Rohrich D Romano G Safarik K Sandor L Schillings E Segato G Sene M Sene R Snoeys W Somarel F Spyropoulou Stassinaki M Staroba P Turrisi R Tveter TS Urban J van de Ven P Vyvre PV Vascotto A Vik T Baillie OV Vinogradov L Virgili T Votruba MF Vrlakova J Zavada P. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2005
Rivista:	PHYSICS LETTERS. SECTION B
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.
Handle:	http://hdl.handle.net/11586/133434
Appare nelle tipologie:	1.1 Articolo in rivista

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