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Precision Measurement of the Longitudinal Double-Spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions at sqrt[s]=200  GeV.

  • Author(s): Adamczyk, L;
  • Adkins, JK;
  • Agakishiev, G;
  • Aggarwal, MM;
  • Ahammed, Z;
  • Alekseev, I;
  • Alford, J;
  • Anson, CD;
  • Aparin, A;
  • Arkhipkin, D;
  • Aschenauer, EC;
  • Averichev, GS;
  • Banerjee, A;
  • Beavis, DR;
  • Bellwied, R;
  • Bhasin, A;
  • Bhati, AK;
  • Bhattarai, P;
  • Bichsel, H;
  • Bielcik, J;
  • Bielcikova, J;
  • Bland, LC;
  • Bordyuzhin, IG;
  • Borowski, W;
  • Bouchet, J;
  • Brandin, AV;
  • Brovko, SG;
  • Bültmann, S;
  • Bunzarov, I;
  • Burton, TP;
  • Butterworth, J;
  • Caines, H;
  • Calderón de la Barca Sánchez, M;
  • Campbell, JM;
  • 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;
  • Contin, G;
  • Cramer, JG;
  • Crawford, HJ;
  • Cudd, AB;
  • Cui, X;
  • Das, S;
  • Davila Leyva, A;
  • De Silva, LC;
  • Debbe, RR;
  • Dedovich, TG;
  • Deng, J;
  • Derevschikov, AA;
  • Derradi de Souza, R;
  • Dhamija, S;
  • di Ruzza, B;
  • Didenko, L;
  • Dilks, C;
  • Ding, F;
  • 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;
  • Eyser, O;
  • Fatemi, R;
  • Fazio, S;
  • Fedorisin, J;
  • Filip, P;
  • Finch, E;
  • Fisyak, Y;
  • Flores, CE;
  • Gagliardi, CA;
  • Gangadharan, DR;
  • Garand, D;
  • Geurts, F;
  • Gibson, A;
  • Girard, M;
  • Gliske, S;
  • Greiner, L;
  • Grosnick, D;
  • Gunarathne, DS;
  • Guo, Y;
  • Gupta, A;
  • Gupta, S;
  • Guryn, W;
  • Haag, B;
  • Hamed, A;
  • Han, L-X;
  • Haque, R;
  • Harris, JW;
  • Heppelmann, S;
  • Hirsch, A;
  • Hoffmann, GW;
  • Hofman, DJ;
  • Horvat, S;
  • Huang, B;
  • Huang, HZ;
  • Huang, X;
  • Huck, P;
  • Humanic, TJ;
  • Igo, G;
  • Jacobs, WW;
  • Jang, H;
  • 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;
  • Kosarzewski, LK;
  • Kotchenda, L;
  • Kraishan, AF;
  • Kravtsov, P;
  • Krueger, K;
  • Kulakov, I;
  • Kumar, L;
  • Kycia, RA;
  • Lamont, MAC;
  • Landgraf, JM;
  • Landry, KD;
  • Lauret, J;
  • Lebedev, A;
  • Lednicky, R;
  • Lee, JH;
  • LeVine, MJ;
  • Li, C;
  • Li, W;
  • Li, X;
  • Li, X;
  • Li, Y;
  • Li, ZM;
  • Lisa, MA;
  • Liu, F;
  • Ljubicic, T;
  • Llope, WJ;
  • Lomnitz, M;
  • Longacre, RS;
  • Luo, X;
  • Ma, GL;
  • Ma, YG;
  • Madagodagettige Don, DMMD;
  • Mahapatra, DP;
  • Majka, R;
  • Margetis, S;
  • Markert, C;
  • Masui, H;
  • Matis, HS;
  • McDonald, D;
  • McShane, TS;
  • Minaev, NG;
  • Mioduszewski, S;
  • Mohanty, B;
  • Mondal, MM;
  • Morozov, DA;
  • Mustafa, MK;
  • Nandi, BK;
  • Nasim, Md;
  • Nayak, TK;
  • Nelson, JM;
  • Nigmatkulov, G;
  • Nogach, LV;
  • Noh, SY;
  • Novak, J;
  • Nurushev, SB;
  • Odyniec, G;
  • Ogawa, A;
  • Oh, K;
  • Ohlson, A;
  • Okorokov, V;
  • Oldag, EW;
  • Olvitt, DL;
  • Pachr, M;
  • Page, BS;
  • Pal, SK;
  • Pan, YX;
  • Pandit, Y;
  • Panebratsev, Y;
  • Pawlak, T;
  • Pawlik, B;
  • Pei, H;
  • Perkins, C;
  • Peryt, W;
  • Pile, P;
  • Planinic, M;
  • Pluta, J;
  • Poljak, N;
  • Poniatowska, K;
  • Porter, J;
  • Poskanzer, AM;
  • Pruthi, NK;
  • Przybycien, M;
  • Pujahari, PR;
  • Putschke, J;
  • Qiu, H;
  • Quintero, A;
  • 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;
  • Rusnakova, O;
  • Sahoo, NR;
  • Sahu, PK;
  • Sakrejda, I;
  • Salur, S;
  • Sandweiss, J;
  • Sangaline, E;
  • Sarkar, A;
  • Schambach, J;
  • Scharenberg, RP;
  • Schmah, AM;
  • Schmidke, WB;
  • Schmitz, N;
  • Seger, J;
  • 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;
  • Spinka, HM;
  • Srivastava, B;
  • Stanislaus, TDS;
  • Stevens, JR;
  • Stock, R;
  • Strikhanov, M;
  • Stringfellow, B;
  • Sumbera, M;
  • Sun, X;
  • Sun, XM;
  • Sun, Y;
  • Sun, Z;
  • Surrow, B;
  • Svirida, DN;
  • Symons, TJM;
  • Szelezniak, MA;
  • 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;
  • Vandenbroucke, M;
  • Vanfossen, JA;
  • Varma, R;
  • Vasconcelos, GMS;
  • Vasiliev, AN;
  • Vertesi, R;
  • Videbæk, F;
  • Viyogi, YP;
  • Vokal, S;
  • Vossen, A;
  • Wada, M;
  • Wang, F;
  • Wang, G;
  • Wang, H;
  • Wang, JS;
  • 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, J;
  • Xu, N;
  • Xu, QH;
  • Xu, Y;
  • Xu, Z;
  • Yan, W;
  • Yang, C;
  • Yang, Y;
  • Yang, Y;
  • Ye, Z;
  • Yepes, P;
  • Yi, L;
  • Yip, K;
  • Yoo, I-K;
  • Yu, N;
  • Zawisza, Y;
  • Zbroszczyk, H;
  • Zha, W;
  • Zhang, JB;
  • Zhang, JL;
  • Zhang, S;
  • Zhang, XP;
  • Zhang, Y;
  • Zhang, ZP;
  • Zhao, F;
  • Zhao, J;
  • Zhong, C;
  • Zhu, X;
  • Zhu, YH;
  • Zoulkarneeva, Y;
  • Zyzak, M;
  • STAR Collaboration
  • et al.
Abstract

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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