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Neutral pion cross section and spin asymmetries at intermediate pseudorapidity in polarized proton collisions at root s=200 GeV
Adamczyk, L; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Alford, J; Anson, CD; Aparin, A; Arkhipkin, D; Aschenauer, EC; Averichev, GS; Balewski, J; Banerjee, A; Barber, B; Barnovska, Z; Beavis, DR; Bellwied, R; Betancourt, MJ; Bhasin, A; Bhati, AK; Bhattarai, P; Bichsel, H; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Borowski, W; Bouchet, J; Brandin, AV; Bridgeman, A; Brovko, SG; Bultmann, S; Bunzarov, I; Burton, TP; Butterworth, J; Caines, H; Sanchez, MCD; Cebra, D; Cendejas, R; Cervantes, MC; Chaloupka, P; Chang, Z; Chattopadhyay, S; Chen, HF; Chen, JH; Chen, L; Cheng, J; Cherney, M; Chikanian, A; Christie, W; Chwastowski, J; Codrington, MJM; Corliss, R; Cramer, JG; Crawford, HJ; Cui, X; Das, S; Leyva, AD; De Silva, LC; Debbe, RR; Dedovich, TG; Deng, J; Derevschikov, AA; de Souza, RD; Dhamija, S; di Ruzza, B; Didenko, L; Dilks, C; Ding, F; Dion, A; Djawotho, P; Dong, X; Drachenberg, JL; Draper, JE; Du, CM; Dunkelberger, LE; Dunlop, JC; Efimov, LG; Engelage, J; Engle, KS; Eppley, G; Eun, L; Evdokimov, O; Fatemi, R; Fazio, S; Fedorisin, J; Fersch, RG; Filip, P; Finch, E; Fisyak, Y; Flores, CE; Gagliardi, CA; Gangadharan, DR; Garand, D; Geurts, F; Gibson, A; Girard, M; Gliske, S; Grosnick, D; Guo, Y; Gupta, A; Gupta, S; Guryn, W; Haag, B; Hajkova, O; Hamed, A; Han, LX; Haque, R; Harris, JW; Hays-Wehle, JP; He, W; Heppelmann, S; Hirsch, A; Hoffmann, GW; Hofman, DJ; Horvat, S; Huang, B; Huang, HZ; Huck, P; Humanic, TJ; Igo, G; Jacobs, WW; Jang, H; Jena, C; Judd, EG; Kabana, S; Kalinkin, D; Kang, K; Kauder, K; Ke, HW; Keane, D; Kechechyan, A; Kesich, A; Khan, ZH; Kikola, DP; Kisel, I; Kisiel, A; Koetke, DD; Kollegger, T; Konzer, J; Koralt, I; Korsch, W; Kotchenda, L; Kravtsov, P; Krueger, K; Kulakov, I; Kumar, L; Kycia, RA; Lamont, MAC; Landgraf, JM; Landry, KD; Lauret, J; Lebedev, A; Lednicky, R; Lee, JH; Leight, W; LeVine, MJ; Li, C; Li, W; Li, X; Li, Y; Li, ZM; Lima, LM; Lisa, MA; Liu, F; Ljubicic, T; Llope, WJ; Longacre, RS; Luo, X; Ma, GL; Ma, YG; Don, DMMDM; Mahapatra, DP; Majka, R; Manweiler, R; Margetis, S; Markert, C; Masui, H; Matis, HS; McDonald, D; McShane, TS; Minaev, NG; Mioduszewski, S; Mohanty, B; Mondal, MM; Morozov, DA; Munhoz, MG; Mustafa, MK; Naglis, M; Nandi, BK; Nasim, M; Nayak, TK; Nelson, JM; Nogach, LV; Noh, SY; Nord, PM; Novak, J; Nurushev, SB; Odyniec, G; Ogawa, A; Oh, K; Ohlson, A; Okorokov, V; Oldag, EW; Oliveira, RAN; Olson, D; Pachr, M; Page, BS; Pal, SK; Pan, YX; Pandit, Y; Panebratsev, Y; Pawlak, T; Pawlik, B; Pei, H; Perkins, C; Peryt, W; Peterson, A; Pile, P; Planinic, M; Pluta, J; Plyku, D; Pochron, W; Poljak, N; Porter, J; Poskanzer, AM; Powell, CB; Pruneau, C; Pruthi, NK; Przybycien, M; Pujahari, PR; Putschke, J; Qiu, H; Ramachandran, S; Raniwala, R; Raniwala, S; Ray, RL; Riley, CK; Ritter, HG; Roberts, JB; Rogachevskiy, OV; Romero, JL; Ross, JF; Roy, A; Ruan, L; Rusnak, J; Sahoo, NR; Sahu, PK; Sakrejda, I; Salur, S; Sandacz, A; Sandweiss, J; Sangaline, E; Sarkar, A; Schambach, J; Scharenberg, RP; Schaub, J; Schmah, AM; Schmidke, WB; Schmitz, N; Seger, J; Selyuzhenkov, I; Seyboth, P; Shah, N; Shahaliev, E; Shanmuganathan, PV; Shao, M; Sharma, B; Shen, WQ; Shi, SS; Shou, QY; Sichtermann, EP; Singaraju, RN; Skoby, MJ; Smirnov, D; Smirnov, N; Solanki, D; Sorensen, P; deSouza, UG; Spinka, HM; Srivastava, B; Stanislaus, TDS; Stevens, JR; Stock, R; Strikhanov, M; Stringfellow, B; Suaide, AAP; Sumbera, M; Sun, X; Sun, XM; Sun, Y; Sun, Z; Surrow, B; Svirida, DN; Symons, TJM; de Toledo, AS; Takahashi, J; Tang, AH; Tang, Z; Tarnowsky, T; Thomas, JH; Timmins, AR; Tlusty, D; Tokarev, M; Trentalange, S; Tribble, RE; Tribedy, P; Trzeciak, BA; Tsai, OD; Turnau, J; Ullrich, T; Underwood, DG; Van Buren, G; van Nieuwenhuizen, G; Vanfossen, JA; Varma, R; Vasconcelos, GMS; Vasiliev, AN; Vertesi, R; Videbk, F; Viyogi, YP; Vokal, S; Voloshin, SA; Vossen, A; Wada, M; Walker, M; Wang, F; Wang, G; Wang, H; Wang, JS; Wang, Q; Wang, XL; Wang, Y; Webb, G; Webb, JC; Westfall, GD; Wieman, H; Wissink, SW; Witt, R; Wu, YF; Xiao, Z; Xie, W; Xin, K; Xu, H; Xu, N; Xu, QH; Xu, W; Xu, Y; Xu, Z; Yan, W; Yang, C; Yang, Y; Ye, Z; Yepes, P; Yi, L; Yip, K; Yoo, IK; Zawisza, Y; Zbroszczyk, H; Zha, W; Zhang, JB; Zhang, S; Zhang, XP; Zhang, Y; Zhang, ZP; Zhao, F; Zhao, J; Zhong, C; Zhu, X; Zhu, YH; Zoulkarneeva, Y; Zyzak, M
2014
Source PublicationPHYSICAL REVIEW D
ISSN1550-7998
Volume89Issue:1
AbstractThe differential cross section and spin asymmetries for neutral pions produced within the intermediate pseudorapidity range 0.8 < eta < 2.0 in polarized proton-proton collisions at root s = 200 GeV are presented. Neutral pions were detected using the end cap electromagnetic calorimeter in the STAR detector at RHIC. The cross section was measured over a transverse momentum range of 5 < p(T) < 16 GeV/c and is found to agree with a next-to-leading order perturbative QCD calculation. The longitudinal double-spin asymmetry A(LL) is measured in the same pseudorapidity range and spans a range of Bjorken-x down to x approximate to 0.01. The measured A(LL) is consistent with model predictions for varying degrees of gluon polarization. The parity-violating asymmetry A(L) is also measured and found to be consistent with zero. The transverse single-spin asymmetry A(N) is measured over a previously unexplored kinematic range in Feynman-x and p(T). Such measurements may aid our understanding of the onset and kinematic dependence of the large asymmetries observed at more forward pseudorapidity (eta approximate to 3) and their underlying mechanisms. The A(N) results presented are consistent with a twist-3 model prediction of a small asymmetry over the present kinematic range.
KeywordPlus p Collisions Pi-0 Production Parton Distributions Transverse-momentum Star Fragmentation Antiprotons Qcd
Indexed BySCI
Language英语
WOS IDWOS:000331864800001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14268
Collection中科院上海应用物理研究所2011-2020年
Recommended Citation
GB/T 7714
Adamczyk, L,Adkins, JK,Agakishiev, G,et al. Neutral pion cross section and spin asymmetries at intermediate pseudorapidity in polarized proton collisions at root s=200 GeV[J]. PHYSICAL REVIEW D,2014,89(1).
APA Adamczyk, L.,Adkins, JK.,Agakishiev, G.,Aggarwal, MM.,Ahammed, Z.,...&Zyzak, M.(2014).Neutral pion cross section and spin asymmetries at intermediate pseudorapidity in polarized proton collisions at root s=200 GeV.PHYSICAL REVIEW D,89(1).
MLA Adamczyk, L,et al."Neutral pion cross section and spin asymmetries at intermediate pseudorapidity in polarized proton collisions at root s=200 GeV".PHYSICAL REVIEW D 89.1(2014).
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