Neutral pion cross section and spin asymmetries at intermediate pseudorapidity in polarized proton collisions at root s=200 GeV

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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, 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 ; 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 ; 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
刊名	PHYSICAL REVIEW D
	2014
卷号	89 期号:1
关键词	PLUS P COLLISIONS PI-0 PRODUCTION PARTON DISTRIBUTIONS TRANSVERSE-MOMENTUM STAR FRAGMENTATION ANTIPROTONS QCD
ISSN号	1550-7998
英文摘要	The 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.
收录类别	SCI
语种	英语
WOS记录号	WOS:000331864800001
公开日期	2015-03-13
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/14268]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 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).