Identified baryon and meson distributions at large transverse momenta from Au + Au collisions at square root sNN=200 GeV

B I Abelev; M M Aggarwal; Z Ahammed; B D Anderson; M Anderson; D Arkhipkin; G S Averichev; Y Bai; J Balewski; O Barannikova; L S Barnby; J Baudot; S Bekele; V V Belaga; A Bellingeri-Laurikainen; R Bellwied; F Benedosso; S Bhardwaj; A Bhasin; A K Bhati; H Bichsel; J Bielcik; J Bielcikova; L C Bland; S-L Blyth; B E Bonner; M Botje; J Bouchet; A V Brandin; A Bravar; T P Burton; M Bystersky; R V Cadman; X Z Cai; H Caines; M Calderón de la Barca Sánchez; J Castillo; O Catu; D Cebra; Z Chajecki; P Chaloupka; S Chattopadhyay; H F Chen; J H Chen; J Cheng; M Cherney; A Chikanian; W Christie; J P Coffin; T M Cormier; M R Cosentino; J G Cramer; H J Crawford; D Das; S Das; S Dash; M Daugherity; M M de Moura; T G Dedovich; M Dephillips; A A Derevschikov; L Didenko; T Dietel; P Djawotho; S M Dogra; W J Dong; X Dong; J E Draper; F Du; V B Dunin; J C Dunlop; M R Dutta Mazumdar; V Eckardt; W R Edwards; L G Efimov; V Emelianov; J Engelage; G Eppley; B Erazmus; M Estienne; P Fachini; R Fatemi; J Fedorisin; P Filip; E Finch; V Fine; Y Fisyak; J Fu; C A Gagliardi; L Gaillard; M S Ganti; V Ghazikhanian; P Ghosh; J E Gonzalez; Y G Gorbunov; H Gos; O Grebenyuk; D Grosnick; S M Guertin; K S F F Guimaraes; N Gupta; T D Gutierrez; B Haag; T J Hallman; A Hamed; J W Harris; W He; M Heinz; T W Henry; S Hepplemann; B Hippolyte; A Hirsch; E Hjort; A M Hoffman; G W Hoffmann; M J Horner; H Z Huang; S L Huang; E W Hughes; T J Humanic; G Igo; P Jacobs; W W Jacobs; P Jakl; F Jia; H Jiang; P G Jones; E G Judd; S Kabana; K Kang; J Kapitan; M Kaplan; D Keane; A Kechechyan; V Yu Khodyrev; B C Kim; J Kiryluk; A Kisiel; E M Kislov; S R Klein; A Kocoloski; D D Koetke; T Kollegger; M Kopytine; L Kotchenda; V Kouchpil; K L Kowalik; M Kramer; P Kravtsov; V I Kravtsov; K Krueger; C Kuhn; A I Kulikov; A Kumar; A A Kuznetsov; M A C Lamont; J M Landgraf; S Lange; S Lapointe; F Laue; J Lauret; A Lebedev; R Lednicky; C-H Lee; S Lehocka; M J Levine; C Li; Q Li; Y Li; G Lin; X Lin; S J Lindenbaum; M A Lisa; F Liu; H Liu; J Liu; L Liu; Z Liu; T Ljubicic; W J Llope; H Long; R S Longacre; W A Love; Y Lu; T Ludlam; D Lynn; G L Ma; J G Ma; Y G Ma; D Magestro; D P Mahapatra; R Majka; L K Mangotra; R Manweiler; S Margetis; C Markert; L Martin; H S Matis; Yu A Matulenko; C J McClain; T S McShane; Yu Melnick; A Meschanin; J Millane; M L Miller; N G Minaev; S Mioduszewski; C Mironov; A Mischke; D K Mishra; J Mitchell; B Mohanty; L Molnar; C F Moore; D A Morozov; M G Munhoz; B K Nandi; C Nattrass; T K Nayak; J M Nelson; N S Nepali; P K Netrakanti; L V Nogach; S B Nurushev; G Odyniec; A Ogawa; V Okorokov; M Oldenburg; D Olson; M Pachr; S K Pal; Y Panebratsev; S Y Panitkin; A I Pavlinov; T Pawlak; T Peitzmann; V Perevoztchikov; C Perkins; W Peryt; S C Phatak; R Picha; M Planinic; J Pluta; N Poljak; N Porile; J Porter; A M Poskanzer; M Potekhin; E Potrebenikova; B V K S Potukuchi; D Prindle; C Pruneau; J Putschke; G Rakness; R Raniwala; S Raniwala; R L Ray; S V Razin; J Reinnarth; D Relyea; A Ridiger; H G Ritter; J B Roberts; O V Rogachevskiy; J L Romero; A Rose; C Roy; L Ruan; M J Russcher; R Sahoo; T Sakuma; S Salur; J Sandweiss; M Sarsour; P S Sazhin; J Schambach; R P Scharenberg; N Schmitz; J Seger; I Selyuzhenkov; P Seyboth; A Shabetai; E Shahaliev; M Shao; M Sharma; W Q Shen; S S Shimanskiy; E P Sichtermann; F Simon; R N Singaraju; N Smirnov; R Snellings; G Sood; P Sorensen; J Sowinski; J Speltz; H M Spinka; B Srivastava; A Stadnik; T D S Stanislaus; R Stock; A Stolpovsky; M Strikhanov; B Stringfellow; A A P Suaide; N L Subba; E Sugarbaker; M Sumbera; Z Sun; B Surrow; M Swanger; T J M Symons; A Szanto de Toledo; A Tai; J Takahashi; A H Tang; T Tarnowsky; D Thein; J H Thomas; A R Timmins; S Timoshenko; M Tokarev; T A Trainor; S Trentalange; R E Tribble; O D Tsai; J Ulery; T Ullrich; D G Underwood; G Van Buren; N van der Kolk; M van Leeuwen; A M Vander Molen; R Varma; I M Vasilevski; A N Vasiliev; R Vernet; S E Vigdor; Y P Viyogi; S Vokal; S A Voloshin; W T Waggoner; F Wang; G Wang; J S Wang; X L Wang; Y Wang; J W Watson; J C Webb; G D Westfall; A Wetzler; C Whitten Jr; H Wieman; S W Wissink; R Witt; J Wood; J Wu; N Xu; Q H Xu; Z Xu; P Yepes; I-K Yoo; V I Yurevich; W Zhan; H Zhang; W M Zhang; Y Zhang; Z P Zhang; Y Zhao; C Zhong; R Zoulkarneev; Y Zoulkarneeva; A N Zubarev; J X Zuo; STAR Collaboration

doi:10.1103/PhysRevLett.97.152301

Identified baryon and meson distributions at large transverse momenta from Au + Au collisions at square root sNN=200 GeV

Phys Rev Lett. 2006 Oct 13;97(15):152301. doi: 10.1103/PhysRevLett.97.152301. Epub 2006 Oct 11.

Authors

B I Abelev¹, M M Aggarwal, Z Ahammed, B D Anderson, M Anderson, D Arkhipkin, G S Averichev, Y Bai, J Balewski, O Barannikova, L S Barnby, J Baudot, S Bekele, V V Belaga, A Bellingeri-Laurikainen, R Bellwied, F Benedosso, S Bhardwaj, A Bhasin, A K Bhati, H Bichsel, J Bielcik, J Bielcikova, L C Bland, S-L Blyth, B E Bonner, M Botje, J Bouchet, A V Brandin, A Bravar, T P Burton, M Bystersky, R V Cadman, X Z Cai, H Caines, M Calderón de la Barca Sánchez, J Castillo, O Catu, D Cebra, Z Chajecki, P Chaloupka, S Chattopadhyay, H F Chen, J H Chen, J Cheng, M Cherney, A Chikanian, W Christie, J P Coffin, T M Cormier, M R Cosentino, J G Cramer, H J Crawford, D Das, S Das, S Dash, M Daugherity, M M de Moura, T G Dedovich, M Dephillips, A A Derevschikov, L Didenko, T Dietel, P Djawotho, S M Dogra, W J Dong, X Dong, J E Draper, F Du, V B Dunin, J C Dunlop, M R Dutta Mazumdar, V Eckardt, W R Edwards, L G Efimov, V Emelianov, J Engelage, G Eppley, B Erazmus, M Estienne, P Fachini, R Fatemi, J Fedorisin, P Filip, E Finch, V Fine, Y Fisyak, J Fu, C A Gagliardi, L Gaillard, M S Ganti, V Ghazikhanian, P Ghosh, J E Gonzalez, Y G Gorbunov, H Gos, O Grebenyuk, D Grosnick, S M Guertin, K S F F Guimaraes, N Gupta, T D Gutierrez, B Haag, T J Hallman, A Hamed, J W Harris, W He, M Heinz, T W Henry, S Hepplemann, B Hippolyte, A Hirsch, E Hjort, A M Hoffman, G W Hoffmann, M J Horner, H Z Huang, S L Huang, E W Hughes, T J Humanic, G Igo, P Jacobs, W W Jacobs, P Jakl, F Jia, H Jiang, P G Jones, E G Judd, S Kabana, K Kang, J Kapitan, M Kaplan, D Keane, A Kechechyan, V Yu Khodyrev, B C Kim, J Kiryluk, A Kisiel, E M Kislov, S R Klein, A Kocoloski, D D Koetke, T Kollegger, M Kopytine, L Kotchenda, V Kouchpil, K L Kowalik, M Kramer, P Kravtsov, V I Kravtsov, K Krueger, C Kuhn, A I Kulikov, A Kumar, A A Kuznetsov, M A C Lamont, J M Landgraf, S Lange, S Lapointe, F Laue, J Lauret, A Lebedev, R Lednicky, C-H Lee, S Lehocka, M J Levine, C Li, Q Li, Y Li, G Lin, X Lin, S J Lindenbaum, M A Lisa, F Liu, H Liu, J Liu, L Liu, Z Liu, T Ljubicic, W J Llope, H Long, R S Longacre, W A Love, Y Lu, T Ludlam, D Lynn, G L Ma, J G Ma, Y G Ma, D Magestro, D P Mahapatra, R Majka, L K Mangotra, R Manweiler, S Margetis, C Markert, L Martin, H S Matis, Yu A Matulenko, C J McClain, T S McShane, Yu Melnick, A Meschanin, J Millane, M L Miller, N G Minaev, S Mioduszewski, C Mironov, A Mischke, D K Mishra, J Mitchell, B Mohanty, L Molnar, C F Moore, D A Morozov, M G Munhoz, B K Nandi, C Nattrass, T K Nayak, J M Nelson, N S Nepali, P K Netrakanti, L V Nogach, S B Nurushev, G Odyniec, A Ogawa, V Okorokov, M Oldenburg, D Olson, M Pachr, S K Pal, Y Panebratsev, S Y Panitkin, A I Pavlinov, T Pawlak, T Peitzmann, V Perevoztchikov, C Perkins, W Peryt, S C Phatak, R Picha, M Planinic, J Pluta, N Poljak, N Porile, J Porter, A M Poskanzer, M Potekhin, E Potrebenikova, B V K S Potukuchi, D Prindle, C Pruneau, J Putschke, G Rakness, R Raniwala, S Raniwala, R L Ray, S V Razin, J Reinnarth, D Relyea, A Ridiger, H G Ritter, J B Roberts, O V Rogachevskiy, J L Romero, A Rose, C Roy, L Ruan, M J Russcher, R Sahoo, T Sakuma, S Salur, J Sandweiss, M Sarsour, P S Sazhin, J Schambach, R P Scharenberg, N Schmitz, J Seger, I Selyuzhenkov, P Seyboth, A Shabetai, E Shahaliev, M Shao, M Sharma, W Q Shen, S S Shimanskiy, E P Sichtermann, F Simon, R N Singaraju, N Smirnov, R Snellings, G Sood, P Sorensen, J Sowinski, J Speltz, H M Spinka, B Srivastava, A Stadnik, T D S Stanislaus, R Stock, A Stolpovsky, M Strikhanov, B Stringfellow, A A P Suaide, N L Subba, E Sugarbaker, M Sumbera, Z Sun, B Surrow, M Swanger, T J M Symons, A Szanto de Toledo, A Tai, J Takahashi, A H Tang, T Tarnowsky, D Thein, J H Thomas, A R Timmins, S Timoshenko, M Tokarev, T A Trainor, S Trentalange, R E Tribble, O D Tsai, J Ulery, T Ullrich, D G Underwood, G Van Buren, N van der Kolk, M van Leeuwen, A M Vander Molen, R Varma, I M Vasilevski, A N Vasiliev, R Vernet, S E Vigdor, Y P Viyogi, S Vokal, S A Voloshin, W T Waggoner, F Wang, G Wang, J S Wang, X L Wang, Y Wang, J W Watson, J C Webb, G D Westfall, A Wetzler, C Whitten Jr, H Wieman, S W Wissink, R Witt, J Wood, J Wu, N Xu, Q H Xu, Z Xu, P Yepes, I-K Yoo, V I Yurevich, W Zhan, H Zhang, W M Zhang, Y Zhang, Z P Zhang, Y Zhao, C Zhong, R Zoulkarneev, Y Zoulkarneeva, A N Zubarev, J X Zuo; STAR Collaboration

Affiliation

¹ Yale University, New Haven, Connecticut 06520, USA.

PMID: 17155321
DOI: 10.1103/PhysRevLett.97.152301

Abstract

Transverse momentum spectra of pi+/-, p, and p up to 12 GeV/c at midrapidity in centrality selected Au + Au collisions at square root sNN=200 GeV are presented. In central Au + Au collisions, both pi +/- and p(p) show significant suppression with respect to binary scaling at pT approximately >4 GeV/c. Protons and antiprotons are less suppressed than pi+/-, in the range 1.5 approximately < pT approximately < 6 GeV/c. The pi-/pi+ and p/p ratios show at most a weak pT dependence and no significant centrality dependence. The p/pi ratios in central Au + Au collisions approach the values in p + p and d + Au collisions at pT approximately >5 GeV/c. The results at high pT indicate that the partonic sources of pi+/-, p, and p have similar energy loss when traversing the nuclear medium.