Precision Measurement of the Longitudinal Double-Spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions at sqrt[s]=200 GeV.
L Adamczyk, J K Adkins, G Agakishiev, M M Aggarwal, Z Ahammed, I Alekseev, J Alford, C D Anson, A Aparin, D Arkhipkin, E C Aschenauer, G S Averichev, A Banerjee, D R Beavis, R Bellwied, A Bhasin, A K Bhati, P Bhattarai, H Bichsel, J Bielcik, J Bielcikova, L C Bland, I G Bordyuzhin, W Borowski, J Bouchet, A V Brandin, S G Brovko, S Bültmann, I Bunzarov, T P Burton, J Butterworth, H Caines, M Calderón de la Barca Sánchez, J M Campbell, D Cebra, R Cendejas, M C Cervantes, P Chaloupka, Z Chang, S Chattopadhyay, H F Chen, J H Chen, L Chen, J Cheng, M Cherney, A Chikanian, W Christie, J Chwastowski, M J M Codrington, G Contin, J G Cramer, H J Crawford, A B Cudd, X Cui, S Das, A Davila Leyva, L C De Silva, R R Debbe, T G Dedovich, J Deng, A A Derevschikov, R Derradi de Souza, S Dhamija, B di Ruzza, L Didenko, C Dilks, F Ding, P Djawotho, X Dong, J L Drachenberg, J E Draper, C M Du, L E Dunkelberger, J C Dunlop, L G Efimov, J Engelage, K S Engle, G Eppley, L Eun, O Evdokimov, O Eyser, R Fatemi, S Fazio, J Fedorisin, P Filip, E Finch, Y Fisyak, C E Flores, C A Gagliardi, D R Gangadharan, D Garand, F Geurts, A Gibson, M Girard, S Gliske, L Greiner, D Grosnick, D S Gunarathne, Y Guo, A Gupta, S Gupta, W Guryn, B Haag, A Hamed, L-X Han, R Haque, J W Harris, S Heppelmann, A Hirsch, G W Hoffmann, D J Hofman, S Horvat, B Huang, H Z Huang, X Huang, P Huck, T J Humanic, G Igo, W W Jacobs, H Jang, E G Judd, S Kabana, D Kalinkin, K Kang, K Kauder, H W Ke, D Keane, A Kechechyan, A Kesich, Z H Khan, D P Kikola, I Kisel, A Kisiel, D D Koetke, T Kollegger, J Konzer, I Koralt, L K Kosarzewski, L Kotchenda, A F Kraishan, P Kravtsov, K Krueger, I Kulakov, L Kumar, R A Kycia, M A C Lamont, J M Landgraf, K D Landry, J Lauret, A Lebedev, R Lednicky, J H Lee, M J LeVine, C Li, W Li, X Li, X Li, Y Li, Z M Li, M A Lisa, F Liu, T Ljubicic, W J Llope, M Lomnitz, R S Longacre, X Luo, G L Ma, Y G Ma, D M M D Madagodagettige Don, D P Mahapatra, R Majka, S Margetis, C Markert, H Masui, H S Matis, D McDonald, T S McShane, N G Minaev, S Mioduszewski, B Mohanty, M M Mondal, D A Morozov, M K Mustafa, B K Nandi, Md Nasim, T K Nayak, J M Nelson, G Nigmatkulov, L V Nogach, S Y Noh, J Novak, S B Nurushev, G Odyniec, A Ogawa, K Oh, A Ohlson, V Okorokov, E W Oldag, D L Olvitt, M Pachr, B S Page, S K Pal, Y X Pan, Y Pandit, Y Panebratsev, T Pawlak, B Pawlik, H Pei, C Perkins, W Peryt, P Pile, M Planinic, J Pluta, N Poljak, K Poniatowska, J Porter, A M Poskanzer, N K Pruthi, M Przybycien, P R Pujahari, J Putschke, H Qiu, A Quintero, S Ramachandran, R Raniwala, S Raniwala, R L Ray, C K Riley, H G Ritter, J B Roberts, O V Rogachevskiy, J L Romero, J F Ross, A Roy, L Ruan, J Rusnak, O Rusnakova, N R Sahoo, P K Sahu, I Sakrejda, S Salur, J Sandweiss, E Sangaline, A Sarkar, J Schambach, R P Scharenberg, A M Schmah, W B Schmidke, N Schmitz, J Seger, P Seyboth, N Shah, E Shahaliev, P V Shanmuganathan, M Shao, B Sharma, W Q Shen, S S Shi, Q Y Shou, E P Sichtermann, R N Singaraju, M J Skoby, D Smirnov, N Smirnov, D Solanki, P Sorensen, H M Spinka, B Srivastava, T D S Stanislaus, J R Stevens, R Stock, M Strikhanov, B Stringfellow, M Sumbera, X Sun, X M Sun, Y Sun, Z Sun, B Surrow, D N Svirida, T J M Symons, M A Szelezniak, J Takahashi, A H Tang, Z Tang, T Tarnowsky, J H Thomas, A R Timmins, D Tlusty, M Tokarev, S Trentalange, R E Tribble, P Tribedy, B A Trzeciak, O D Tsai, J Turnau, T Ullrich, D G Underwood, G Van Buren, G van Nieuwenhuizen, M Vandenbroucke, J A Vanfossen, R Varma, G M S Vasconcelos, A N Vasiliev, R Vertesi, F Videbæk, Y P Viyogi, S Vokal, A Vossen, M Wada, F Wang, G Wang, H Wang, J S Wang, X L Wang, Y Wang, Y Wang, G Webb, J C Webb, G D Westfall, H Wieman, S W Wissink, R Witt, Y F Wu, Z Xiao, W Xie, K Xin, H Xu, J Xu, N Xu, Q H Xu, Y Xu, Z Xu, W Yan, C Yang, Y Yang, Y Yang, Z Ye, P Yepes, L Yi, K Yip, I-K Yoo, N Yu, Y Zawisza, H Zbroszczyk, W Zha, J B Zhang, J L Zhang, S Zhang, X P Zhang, Y Zhang, Z P Zhang, F Zhao, J Zhao, C Zhong, X Zhu, Y H Zhu, Y Zoulkarneeva, M Zyzak
We report a new measurement of the midrapidity inclusive jet longitudinal double-spin asymmetry, A_{LL}, in polarized pp collisions at center-of-mass energy sqrt[s]=200 GeV. The STAR data place stringent constraints on polarized parton distribution functions extracted at next-to-leading order from global analyses of inclusive deep-inelastic scattering (DIS), semi-inclusive DIS, and RHIC pp data. The measured asymmetries provide evidence at the 3σ level for positive gluon polarization in the Bjorken-x region x>0.05.
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