K/pi Fluctuations at relativistic energies

B I Abelev; M M Aggarwal; Z Ahammed; B D Anderson; D Arkhipkin; G S Averichev; J Balewski; O Barannikova; L S Barnby; J Baudot; S Baumgart; D R Beavis; R Bellwied; F Benedosso; M J Betancourt; R R Betts; A Bhasin; A K Bhati; H Bichsel; J Bielcik; J Bielcikova; B Biritz; L C Bland; M Bombara; B E Bonner; M Botje; J Bouchet; E Braidot; A V Brandin; E Bruna; S Bueltmann; T P Burton; M Bystersky; X Z Cai; H Caines; M Calderón de la Barca Sánchez; O Catu; D Cebra; R Cendejas; M C Cervantes; Z Chajecki; P Chaloupka; S Chattopadhyay; H F Chen; J H Chen; J Y Chen; J Cheng; M Cherney; A Chikanian; K E Choi; W Christie; R F Clarke; M J M Codrington; R Corliss; T M Cormier; M R Cosentino; J G Cramer; H J Crawford; D Das; S Das; S Dash; M Daugherity; L C De Silva; T G Dedovich; M DePhillips; A A Derevschikov; R Derradi de Souza; L Didenko; P Djawotho; S M Dogra; X Dong; J L Drachenberg; J E Draper; J C Dunlop; M R Dutta Mazumdar; W R Edwards; L G Efimov; E Elhalhuli; M Elnimr; V Emelianov; J Engelage; G Eppley; B Erazmus; M Estienne; L Eun; P Fachini; R Fatemi; J Fedorisin; A Feng; P Filip; E Finch; V Fine; Y Fisyak; C A Gagliardi; L Gaillard; D R Gangadharan; M S Ganti; E J Garcia-Solis; A Geromitsos; F Geurts; V Ghazikhanian; P Ghosh; Y N Gorbunov; A Gordon; O Grebenyuk; D Grosnick; B Grube; S M Guertin; K S F F Guimaraes; A Gupta; N Gupta; W Guryn; B Haag; T J Hallman; A Hamed; J W Harris; W He; M Heinz; S Heppelmann; B Hippolyte; A Hirsch; E Hjort; A M Hoffman; G W Hoffmann; D J Hofman; R S Hollis; H Z Huang; T J Humanic; L Huo; G Igo; A Iordanova; P Jacobs; W W Jacobs; P Jakl; C Jena; F Jin; C L Jones; P G Jones; J Joseph; E G Judd; S Kabana; K Kajimoto; K Kang; J Kapitan; D Keane; A Kechechyan; D Kettler; V Yu Khodyrev; D P Kikola; J Kiryluk; A Kisiel; S R Klein; A G Knospe; A Kocoloski; D D Koetke; M Kopytine; W Korsch; L Kotchenda; V Kouchpil; P Kravtsov; V I Kravtsov; K Krueger; M Krus; C Kuhn; L Kumar; P Kurnadi; M A C Lamont; J M Landgraf; S LaPointe; J Lauret; A Lebedev; R Lednicky; C-H Lee; J H Lee; W Leight; M J LeVine; C Li; N Li; Y Li; G Lin; S J Lindenbaum; M A Lisa; F Liu; J Liu; L Liu; T Ljubicic; W J Llope; R S Longacre; W A Love; Y Lu; T Ludlam; G L Ma; Y G Ma; D P Mahapatra; R Majka; O I Mall; L K Mangotra; R Manweiler; S Margetis; C Markert; H S Matis; Yu A Matulenko; D McDonald; T S McShane; A Meschanin; R Milner; N G Minaev; S Mioduszewski; A Mischke; B Mohanty; D A Morozov; M G Munhoz; B K Nandi; C Nattrass; T K Nayak; J M Nelson; P K Netrakanti; M J Ng; L V Nogach; S B Nurushev; G Odyniec; A Ogawa; H Okada; V Okorokov; D Olson; M Pachr; B S Page; S K Pal; Y Pandit; Y Panebratsev; T Pawlak; T Peitzmann; V Perevoztchikov; C Perkins; W Peryt; S C Phatak; P Pile; M Planinic; J Pluta; D Plyku; N Poljak; A M Poskanzer; B V K S Potukuchi; D Prindle; C Pruneau; N K Pruthi; P R Pujahari; J Putschke; R Raniwala; S Raniwala; R Redwine; R Reed; 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; I Sakrejda; T Sakuma; S Salur; J Sandweiss; M Sarsour; J Schambach; R P Scharenberg; N Schmitz; J Seger; I Selyuzhenkov; P Seyboth; A Shabetai; E Shahaliev; M Shao; M Sharma; S S Shi; X-H Shi; E P Sichtermann; F Simon; R N Singaraju; M J Skoby; N Smirnov; R Snellings; P Sorensen; J Sowinski; H M Spinka; B Srivastava; A Stadnik; T D S Stanislaus; D Staszak; M Strikhanov; B Stringfellow; A A P Suaide; M C Suarez; N L Subba; M Sumbera; X M Sun; Y Sun; Z Sun; B Surrow; 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; S Timoshenko; D Tlusty; M Tokarev; V N Tram; A L Trattner; S Trentalange; R E Tribble; O D Tsai; J Ulery; T Ullrich; D G Underwood; G Van Buren; M van Leeuwen; A M Vander Molen; J A Vanfossen Jr; R Varma; G M S Vasconcelos; I M Vasilevski; A N Vasiliev; F Videbaek; S E Vigdor; Y P Viyogi; S Vokal; S A Voloshin; M Wada; M Walker; F Wang; G Wang; J S Wang; Q Wang; X Wang; X L Wang; Y Wang; G Webb; J C Webb; G D Westfall; C Whitten Jr; H Wieman; S W Wissink; R Witt; Y Wu; W Xie; N Xu; Q H Xu; Y Xu; Z Xu; P Yang; P Yepes; K Yip; I-K Yoo; Q Yue; M Zawisza; H Zbroszczyk; W Zhan; S Zhang; W M Zhang; X P Zhang; Y Zhang; Z P Zhang; Y Zhao; C Zhong; J Zhou; R Zoulkarneev; Y Zoulkarneeva; J X Zuo; STAR Collaboration

doi:10.1103/PhysRevLett.103.092301

K/pi Fluctuations at relativistic energies

Phys Rev Lett. 2009 Aug 28;103(9):092301. doi: 10.1103/PhysRevLett.103.092301. Epub 2009 Aug 24.

Authors

B I Abelev¹, M M Aggarwal, Z Ahammed, B D Anderson, D Arkhipkin, G S Averichev, J Balewski, O Barannikova, L S Barnby, J Baudot, S Baumgart, D R Beavis, R Bellwied, F Benedosso, M J Betancourt, R R Betts, A Bhasin, A K Bhati, H Bichsel, J Bielcik, J Bielcikova, B Biritz, L C Bland, M Bombara, B E Bonner, M Botje, J Bouchet, E Braidot, A V Brandin, E Bruna, S Bueltmann, T P Burton, M Bystersky, X Z Cai, H Caines, M Calderón de la Barca Sánchez, O Catu, D Cebra, R Cendejas, M C Cervantes, Z Chajecki, P Chaloupka, S Chattopadhyay, H F Chen, J H Chen, J Y Chen, J Cheng, M Cherney, A Chikanian, K E Choi, W Christie, R F Clarke, M J M Codrington, R Corliss, T M Cormier, M R Cosentino, J G Cramer, H J Crawford, D Das, S Das, S Dash, M Daugherity, L C De Silva, T G Dedovich, M DePhillips, A A Derevschikov, R Derradi de Souza, L Didenko, P Djawotho, S M Dogra, X Dong, J L Drachenberg, J E Draper, J C Dunlop, M R Dutta Mazumdar, W R Edwards, L G Efimov, E Elhalhuli, M Elnimr, V Emelianov, J Engelage, G Eppley, B Erazmus, M Estienne, L Eun, P Fachini, R Fatemi, J Fedorisin, A Feng, P Filip, E Finch, V Fine, Y Fisyak, C A Gagliardi, L Gaillard, D R Gangadharan, M S Ganti, E J Garcia-Solis, A Geromitsos, F Geurts, V Ghazikhanian, P Ghosh, Y N Gorbunov, A Gordon, O Grebenyuk, D Grosnick, B Grube, S M Guertin, K S F F Guimaraes, A Gupta, N Gupta, W Guryn, B Haag, T J Hallman, A Hamed, J W Harris, W He, M Heinz, S Heppelmann, B Hippolyte, A Hirsch, E Hjort, A M Hoffman, G W Hoffmann, D J Hofman, R S Hollis, H Z Huang, T J Humanic, L Huo, G Igo, A Iordanova, P Jacobs, W W Jacobs, P Jakl, C Jena, F Jin, C L Jones, P G Jones, J Joseph, E G Judd, S Kabana, K Kajimoto, K Kang, J Kapitan, D Keane, A Kechechyan, D Kettler, V Yu Khodyrev, D P Kikola, J Kiryluk, A Kisiel, S R Klein, A G Knospe, A Kocoloski, D D Koetke, M Kopytine, W Korsch, L Kotchenda, V Kouchpil, P Kravtsov, V I Kravtsov, K Krueger, M Krus, C Kuhn, L Kumar, P Kurnadi, M A C Lamont, J M Landgraf, S LaPointe, J Lauret, A Lebedev, R Lednicky, C-H Lee, J H Lee, W Leight, M J LeVine, C Li, N Li, Y Li, G Lin, S J Lindenbaum, M A Lisa, F Liu, J Liu, L Liu, T Ljubicic, W J Llope, R S Longacre, W A Love, Y Lu, T Ludlam, G L Ma, Y G Ma, D P Mahapatra, R Majka, O I Mall, L K Mangotra, R Manweiler, S Margetis, C Markert, H S Matis, Yu A Matulenko, D McDonald, T S McShane, A Meschanin, R Milner, N G Minaev, S Mioduszewski, A Mischke, B Mohanty, D A Morozov, M G Munhoz, B K Nandi, C Nattrass, T K Nayak, J M Nelson, P K Netrakanti, M J Ng, L V Nogach, S B Nurushev, G Odyniec, A Ogawa, H Okada, V Okorokov, D Olson, M Pachr, B S Page, S K Pal, Y Pandit, Y Panebratsev, T Pawlak, T Peitzmann, V Perevoztchikov, C Perkins, W Peryt, S C Phatak, P Pile, M Planinic, J Pluta, D Plyku, N Poljak, A M Poskanzer, B V K S Potukuchi, D Prindle, C Pruneau, N K Pruthi, P R Pujahari, J Putschke, R Raniwala, S Raniwala, R Redwine, R Reed, 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, I Sakrejda, T Sakuma, S Salur, J Sandweiss, M Sarsour, J Schambach, R P Scharenberg, N Schmitz, J Seger, I Selyuzhenkov, P Seyboth, A Shabetai, E Shahaliev, M Shao, M Sharma, S S Shi, X-H Shi, E P Sichtermann, F Simon, R N Singaraju, M J Skoby, N Smirnov, R Snellings, P Sorensen, J Sowinski, H M Spinka, B Srivastava, A Stadnik, T D S Stanislaus, D Staszak, M Strikhanov, B Stringfellow, A A P Suaide, M C Suarez, N L Subba, M Sumbera, X M Sun, Y Sun, Z Sun, B Surrow, 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, S Timoshenko, D Tlusty, M Tokarev, V N Tram, A L Trattner, S Trentalange, R E Tribble, O D Tsai, J Ulery, T Ullrich, D G Underwood, G Van Buren, M van Leeuwen, A M Vander Molen, J A Vanfossen Jr, R Varma, G M S Vasconcelos, I M Vasilevski, A N Vasiliev, F Videbaek, S E Vigdor, Y P Viyogi, S Vokal, S A Voloshin, M Wada, M Walker, F Wang, G Wang, J S Wang, Q Wang, X Wang, X L Wang, Y Wang, G Webb, J C Webb, G D Westfall, C Whitten Jr, H Wieman, S W Wissink, R Witt, Y Wu, W Xie, N Xu, Q H Xu, Y Xu, Z Xu, P Yang, P Yepes, K Yip, I-K Yoo, Q Yue, M Zawisza, H Zbroszczyk, W Zhan, S Zhang, W M Zhang, X P Zhang, Y Zhang, Z P Zhang, Y Zhao, C Zhong, J Zhou, R Zoulkarneev, Y Zoulkarneeva, J X Zuo; STAR Collaboration

Affiliation

¹ Argonne National Laboratory, Argonne, Illinois 60439, USA.

PMID: 19792791
DOI: 10.1103/PhysRevLett.103.092301

Abstract

We report K/pi fluctuations from Au + Au collisions at sqrt[s(NN)]= 19.6, 62.4, 130, and 200 GeV using the STAR detector at the Relativistic Heavy Ion Collider. K/pi fluctuations in central collisions show little dependence on incident energy and are on the same order as those from NA49 at the Super Proton Synchrotron in central Pb + Pb collisions at sqrt[s(NN)]=12.3 and 17.3 GeV. We report results for the collision centrality dependence of K/pi fluctuations and results for charge-separated fluctuations. We observe that the K/pi fluctuations scale with the charged particle multiplicity density.