Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at √S(NN)=200 GeV

G Agakishiev; M M Aggarwal; Z Ahammed; A V Alakhverdyants; I Alekseev; J Alford; B D Anderson; C D Anson; D Arkhipkin; G S Averichev; J Balewski; L S Barnby; D R Beavis; R Bellwied; M J Betancourt; R R Betts; A Bhasin; A K Bhati; H Bichsel; J Bielcik; J Bielcikova; L C Bland; I G Bordyuzhin; W Borowski; J Bouchet; E Braidot; A V Brandin; S G Brovko; E Bruna; S Bueltmann; I Bunzarov; T P Burton; X Z Cai; H Caines; M Calderón de la Barca Sánchez; D Cebra; R Cendejas; M C Cervantes; P Chaloupka; S Chattopadhyay; H F Chen; J H Chen; J Y Chen; L Chen; J Cheng; M Cherney; A Chikanian; W Christie; P Chung; M J M Codrington; R Corliss; J G Cramer; H J Crawford; X Cui; A Davila Leyva; L C De Silva; R R Debbe; T G Dedovich; J Deng; A A Derevschikov; R Derradi de Souza; L Didenko; P Djawotho; X Dong; J L Drachenberg; J E Draper; C M Du; J C Dunlop; L G Efimov; M Elnimr; J Engelage; G Eppley; M Estienne; L Eun; O Evdokimov; P Fachini; R Fatemi; J Fedorisin; R G Fersch; P Filip; E Finch; V Fine; Y Fisyak; C A Gagliardi; D R Gangadharan; F Geurts; P Ghosh; Y N Gorbunov; A Gordon; O G Grebenyuk; D Grosnick; A Gupta; S Gupta; W Guryn; B Haag; O Hajkova; A Hamed; L-X Han; J W Harris; J P Hays-Wehle; S Heppelmann; A Hirsch; G W Hoffmann; D J Hofman; B Huang; H Z Huang; T J Humanic; L Huo; G Igo; W W Jacobs; C Jena; J Joseph; E G Judd; S Kabana; K Kang; J Kapitan; K Kauder; H W Ke; D Keane; A Kechechyan; D Kettler; D P Kikola; J Kiryluk; A Kisiel; V Kizka; S R Klein; D D Koetke; T Kollegger; J Konzer; I Koralt; L Koroleva; W Korsch; L Kotchenda; P Kravtsov; K Krueger; L Kumar; M A C Lamont; J M Landgraf; S LaPointe; J Lauret; A Lebedev; R Lednicky; J H Lee; W Leight; M J LeVine; C Li; L Li; W Li; X Li; X Li; Y Li; Z M Li; L M Lima; M A Lisa; F Liu; T Ljubicic; W J Llope; R S Longacre; Y Lu; E V Lukashov; X Luo; G L Ma; Y G Ma; D P Mahapatra; R Majka; O I Mall; S Margetis; C Markert; H Masui; H S Matis; D McDonald; T S McShane; A Meschanin; R Milner; N G Minaev; S Mioduszewski; M K Mitrovski; Y Mohammed; B Mohanty; M M Mondal; B Morozov; D A Morozov; M G Munhoz; M K Mustafa; M Naglis; B K Nandi; Md Nasim; T K Nayak; L V Nogach; S B Nurushev; G Odyniec; A Ogawa; K Oh; A Ohlson; V Okorokov; E W Oldag; R A N Oliveira; D Olson; M Pachr; B S Page; S K Pal; Y Pandit; Y Panebratsev; T Pawlak; H Pei; T Peitzmann; C Perkins; W Peryt; P Pile; M Planinic; J Pluta; D Plyku; N Poljak; J Porter; A M Poskanzer; C B Powell; D Prindle; C Pruneau; N K Pruthi; P R Pujahari; J Putschke; H Qiu; R Raniwala; S Raniwala; R L Ray; R Redwine; R Reed; H G Ritter; J B Roberts; O V Rogachevskiy; J L Romero; L Ruan; J Rusnak; N R Sahoo; I Sakrejda; S Salur; J Sandweiss; E Sangaline; A Sarkar; J Schambach; R P Scharenberg; A M Schmah; N Schmitz; T R Schuster; J Seele; J Seger; I Selyuzhenkov; P Seyboth; N Shah; E Shahaliev; M Shao; M Sharma; S S Shi; Q Y Shou; E P Sichtermann; F Simon; R N Singaraju; M J Skoby; N Smirnov; D Solanki; P Sorensen; U G deSouza; H M Spinka; B Srivastava; T D S Stanislaus; S G Steadman; J R Stevens; R Stock; M Strikhanov; B Stringfellow; A A P Suaide; M C Suarez; M Sumbera; X M Sun; Y Sun; Z Sun; B Surrow; D N Svirida; T J M Symons; A Szanto de Toledo; J Takahashi; A H Tang; Z Tang; L H Tarini; T Tarnowsky; D Thein; J H Thomas; J Tian; A R Timmins; D Tlusty; M Tokarev; T A Trainor; S Trentalange; R E Tribble; P Tribedy; B A Trzeciak; O D Tsai; T Ullrich; D G Underwood; G Van Buren; G van Nieuwenhuizen; J A Vanfossen Jr; R Varma; G M S Vasconcelos; A N Vasiliev; F Videbæk; Y P Viyogi; S Vokal; S A Voloshin; M Wada; M Walker; F Wang; G Wang; H Wang; J S Wang; Q Wang; X L Wang; Y Wang; G Webb; J C Webb; G D Westfall; C Whitten Jr; H Wieman; S W Wissink; R Witt; W Witzke; Y F Wu; Z Xiao; W Xie; H Xu; N Xu; Q H Xu; W Xu; Y Xu; Z Xu; L Xue; Y Yang; Y Yang; P Yepes; K Yip; I-K Yoo; M Zawisza; H Zbroszczyk; W Zhan; J B Zhang; S Zhang; W M Zhang; X P Zhang; Y Zhang; Z P Zhang; F Zhao; J Zhao; C Zhong; X Zhu; Y H Zhu; Y Zoulkarneeva; STAR Collaboration

doi:10.1103/PhysRevLett.108.072302

Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at √S(NN)=200 GeV

Phys Rev Lett. 2012 Feb 17;108(7):072302. doi: 10.1103/PhysRevLett.108.072302. Epub 2012 Feb 14.

Authors

G Agakishiev¹, M M Aggarwal, Z Ahammed, A V Alakhverdyants, I Alekseev, J Alford, B D Anderson, C D Anson, D Arkhipkin, G S Averichev, J Balewski, L S Barnby, D R Beavis, R Bellwied, M J Betancourt, R R Betts, A Bhasin, A K Bhati, H Bichsel, J Bielcik, J Bielcikova, L C Bland, I G Bordyuzhin, W Borowski, J Bouchet, E Braidot, A V Brandin, S G Brovko, E Bruna, S Bueltmann, I Bunzarov, T P Burton, X Z Cai, H Caines, M Calderón de la Barca Sánchez, D Cebra, R Cendejas, M C Cervantes, P Chaloupka, S Chattopadhyay, H F Chen, J H Chen, J Y Chen, L Chen, J Cheng, M Cherney, A Chikanian, W Christie, P Chung, M J M Codrington, R Corliss, J G Cramer, H J Crawford, X Cui, A Davila Leyva, L C De Silva, R R Debbe, T G Dedovich, J Deng, A A Derevschikov, R Derradi de Souza, L Didenko, P Djawotho, X Dong, J L Drachenberg, J E Draper, C M Du, J C Dunlop, L G Efimov, M Elnimr, J Engelage, G Eppley, M Estienne, L Eun, O Evdokimov, P Fachini, R Fatemi, J Fedorisin, R G Fersch, P Filip, E Finch, V Fine, Y Fisyak, C A Gagliardi, D R Gangadharan, F Geurts, P Ghosh, Y N Gorbunov, A Gordon, O G Grebenyuk, D Grosnick, A Gupta, S Gupta, W Guryn, B Haag, O Hajkova, A Hamed, L-X Han, J W Harris, J P Hays-Wehle, S Heppelmann, A Hirsch, G W Hoffmann, D J Hofman, B Huang, H Z Huang, T J Humanic, L Huo, G Igo, W W Jacobs, C Jena, J Joseph, E G Judd, S Kabana, K Kang, J Kapitan, K Kauder, H W Ke, D Keane, A Kechechyan, D Kettler, D P Kikola, J Kiryluk, A Kisiel, V Kizka, S R Klein, D D Koetke, T Kollegger, J Konzer, I Koralt, L Koroleva, W Korsch, L Kotchenda, P Kravtsov, K Krueger, L Kumar, M A C Lamont, J M Landgraf, S LaPointe, J Lauret, A Lebedev, R Lednicky, J H Lee, W Leight, M J LeVine, C Li, L Li, W Li, X Li, X Li, Y Li, Z M Li, L M Lima, M A Lisa, F Liu, T Ljubicic, W J Llope, R S Longacre, Y Lu, E V Lukashov, X Luo, G L Ma, Y G Ma, D P Mahapatra, R Majka, O I Mall, S Margetis, C Markert, H Masui, H S Matis, D McDonald, T S McShane, A Meschanin, R Milner, N G Minaev, S Mioduszewski, M K Mitrovski, Y Mohammed, B Mohanty, M M Mondal, B Morozov, D A Morozov, M G Munhoz, M K Mustafa, M Naglis, B K Nandi, Md Nasim, T K Nayak, L V Nogach, S B Nurushev, G Odyniec, A Ogawa, K Oh, A Ohlson, V Okorokov, E W Oldag, R A N Oliveira, D Olson, M Pachr, B S Page, S K Pal, Y Pandit, Y Panebratsev, T Pawlak, H Pei, T Peitzmann, C Perkins, W Peryt, P Pile, M Planinic, J Pluta, D Plyku, N Poljak, J Porter, A M Poskanzer, C B Powell, D Prindle, C Pruneau, N K Pruthi, P R Pujahari, J Putschke, H Qiu, R Raniwala, S Raniwala, R L Ray, R Redwine, R Reed, H G Ritter, J B Roberts, O V Rogachevskiy, J L Romero, L Ruan, J Rusnak, N R Sahoo, I Sakrejda, S Salur, J Sandweiss, E Sangaline, A Sarkar, J Schambach, R P Scharenberg, A M Schmah, N Schmitz, T R Schuster, J Seele, J Seger, I Selyuzhenkov, P Seyboth, N Shah, E Shahaliev, M Shao, M Sharma, S S Shi, Q Y Shou, E P Sichtermann, F Simon, R N Singaraju, M J Skoby, N Smirnov, D Solanki, P Sorensen, U G deSouza, H M Spinka, B Srivastava, T D S Stanislaus, S G Steadman, J R Stevens, R Stock, M Strikhanov, B Stringfellow, A A P Suaide, M C Suarez, M Sumbera, X M Sun, Y Sun, Z Sun, B Surrow, D N Svirida, T J M Symons, A Szanto de Toledo, J Takahashi, A H Tang, Z Tang, L H Tarini, T Tarnowsky, D Thein, J H Thomas, J Tian, A R Timmins, D Tlusty, M Tokarev, T A Trainor, S Trentalange, R E Tribble, P Tribedy, B A Trzeciak, O D Tsai, T Ullrich, D G Underwood, G Van Buren, G van Nieuwenhuizen, J A Vanfossen Jr, R Varma, G M S Vasconcelos, A N Vasiliev, F Videbæk, Y P Viyogi, S Vokal, S A Voloshin, M Wada, M Walker, F Wang, G Wang, H Wang, J S Wang, Q Wang, X L Wang, Y Wang, G Webb, J C Webb, G D Westfall, C Whitten Jr, H Wieman, S W Wissink, R Witt, W Witzke, Y F Wu, Z Xiao, W Xie, H Xu, N Xu, Q H Xu, W Xu, Y Xu, Z Xu, L Xue, Y Yang, Y Yang, P Yepes, K Yip, I-K Yoo, M Zawisza, H Zbroszczyk, W Zhan, J B Zhang, S Zhang, W M Zhang, X P Zhang, Y Zhang, Z P Zhang, F Zhao, J Zhao, C Zhong, X Zhu, Y H Zhu, Y Zoulkarneeva; STAR Collaboration

Affiliation

¹ Joint Institute for Nuclear Research, Dubna, Russia.

PMID: 22401197
DOI: 10.1103/PhysRevLett.108.072302

Abstract

We report transverse momentum (p(T)≤15 GeV/c) spectra of π(±), K(±), p, p[over ¯], K(S)(0), and ρ(0) at midrapidity in p+p and Au+Au collisions at √S(NN)=200 GeV. Perturbative QCD calculations are consistent with π(±) spectra in p+p collisions but do not reproduce K and p(p[over ¯]) spectra. The observed decreasing antiparticle-to-particle ratios with increasing p(T) provide experimental evidence for varying quark and gluon jet contributions to high-p(T) hadron yields. The relative hadron abundances in Au+Au at p(T)≳8 GeV/c are measured to be similar to the p+p results, despite the expected Casimir effect for parton energy loss.