| Title: |
System size and centrality dependence of charged hadron transverse momentum spectra in Au + Au and Cu + Cu collisions at root s(NN)=62.4 and 200 GeV |
| Author(s): |
Alver, B.; Back, B.B.; Baker, M.D.; Ballintijn, M.; Barton, D.S.; Betts, R.R.; Bindel, R.; Busza, W.; Chai, Z.; Chetluru, V.; Garcia, E.; Gburek, T.; Gulbrandsen, K.; Hamblen, J.; Harnarine, I.; Henderson, C.; Hofman, D.; Hollis, R.S.; Holynski, R.; Holzman, B.; Iordanova, A.; Kane, J.L.; Kulinich, P.; Kuo, C.M.; Li, W.; Lin, W.T.; Loizides, C.; Manly, S.; Mignerey, A.C.; Nouicer, R.; Olszewski, A.; Pak, R.; Reed, C.; Richardson, E.; Roland, C.; Roland, G.; Sagerer, J.; Sedykh, I.; Smith, C.E.; Stankiewicz, M.A.; Steinberg, P.; Stephans, G.S.F.; Sukhanov, A.; Szostak, A.; Tonjes, M.B.; Trzupek, A.; van Nieuwenhuizen, G.J.; Vaurynovich, S.S.; Verdier, R.; Veres, G.I.; Walters, P.; Wenger, E.; Willhelm, D.; Wolfs, F.L.H.; Wosiek, B.; Wozniak, K.; Wyngaardt, S.; Wyslouch, B.
|
| Subject(s): |
Suppressioin
|
| Abstract: |
We present transverse momentum distributions of charged hadrons produced in Cu+Cu collisions at root sNN=62.4 and 200 GeV. The spectra are measured for transverse momenta of 0.25 < p(T)< 5.0 GeV/c at root sNN=62.4 GeV and 0.25 < p(T)< 7.0 GeV/c at root sNN=200 GeV, in a pseudorapidity range of 0.2 <eta < 1.4. The nuclear modification factor R-AA is calculated relative to p+p data at both collision energies as a function of collision centrality. At a given collision energy and fractional cross section, R-AA is observed to be systematically larger in Cu+Cu collisions compared to Au+Au. However, for the same number of participating nucleons, R-AA is essentially the same in both systems over the measured range of p(T), in spite of the significantly different geometries of the Cu+Cu and Au+Au systems. |
| Issue Date: |
2006-06-02 |
| Publisher: |
American Physical Society |
| Citation Info: |
Alver, B., Back, B. B., Baker, M. D., Ballintijn, M., Barton, D. S., Betts, R. R. et al. (2006). System size and centrality dependence of charged hadron transverse momentum spectra in Au plus Au and Cu plus Cu collisions at root s(NN)=62.4 and 200 GeV. Physical Review Letters, 96.
http://scitation.aip.org.proxy.cc.uic.edu/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000096000021212301000001&idtype=cvips&gifs=yes |
| Type: |
Article |
| Description: |
Publishers Copyright - http://forms.aps.org/author/copyfaq.html. |
| URI: |
http://hdl.handle.net/10027/205
|
| ISSN: |
0031-9007 |
| Date Available in INDIGO: |
2008-04-14 |
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