Longitudinal Double-Spin Asymmetry For Inclusive Jet Production In (P)Over-Right-Arrow + (P)Over-Right-Arrow Collisions At Root S=200 Gev

B. I. Abelev,M. M. Aggarwal, Z. Ahammed,B. D. Anderson,D. Arkhipkin,G. S. Averichev, Y. Bai,J. Balewski,O. Barannikova,L. Barnby,J. Baudot,S. Baumgart,V. Belaga,A. Bellingeri-Laurikainen, R. Bellwied,F. Benedosso,R. Betts,S. Bhardwaj, A. K. Bhati,A. Bhati, H. Bichsel, J. Bielcikova,L. Bland,S. L. Blyth,M. Bombara,B. Bonner, M. Botje,J. Bouchet,A. Brandin,T. Burton,M. Bystersky,X. Cai, H. Caines,M. Calderón de la Barca Sánchez, J. Callner,O. Catu, D. Cebra,M. Cervantes,Z. Chajecki,P. Chaloupka,S. Chattopadhyay, H. Chen, J. Chen, J. Cheng,M. J. M. Codrington, A. Chikanian,W. Christie,S. Chung,R. Clarke,M. Codrington,J. Coffin,T. Cormier,M. Cosentino,J. Cramer,H. Crawford,D. Das,S. Dash,M. Daugherity,M. de Moura,T. Dedovich,M. DePhillips,A. Derevschikov,L. Didenko, T. Dietel,P. Djawotho,S. Dogra, X. Dong,J. Drachenberg,J. Draper,F. Du,V. Dunin,J. Dunlop,M. Dutta Mazumdar,W. Edwards,L. Efimov,E. Elhalhuli,V. Emelianov,J. Engelage,G. Eppley,B. Erazmus, M. Estienne,P. Fachini,R. Fatemi,J. Fedorisin,A. Feng,P. Filip,E. Finch,V. Fine,Y. Fisyak,J. Fu,C. Gagliardi,L. Gaillard,M. Ganti, E. Garcia-Solis,V. Ghazikhanian,P. Ghosh,Y. Gorbunov,H. Gos,O. Grebenyuk,D. Grosnick,B. Grube,S. Guertin,K. Guimaraes, A. Gupta,N. Gupta,B. Haag,T. Hallman,A. Hamed,J. Harris,W. He,M. Heinz,T. J. Humanic,S. Heppelmann, B. Hippolyte, A. Hirsch,E. Hjort,A. Hoffman,G. Hoffmann,D. Hofman,R. Hollis,M. Horner,H. Huang,E. Hughes,T. Humanic, G. Igo,A. Iordanova, P. Jacobs,W. Jacobs,P. Jakl, P. Jones,E. Judd,S. Kabana,K. Kang,J. Kapitan,M. Kopytine,D. Keane,A. Kechechyan,D. Kettler,V. Khodyrev,J. Kiryluk,A. Kisiel,E. Kislov,S. Klein,A. Knospe,A. A. Kuznetsov,D. Koetke,T. Kollegger,M. Kopytine,L. Kotchenda,V. Kouchpil,K. Kowalik,P. Kravtsov,V. Kravtsov, K. Krueger,C. Kuhn, A. Kulikov, A. Kumar,P. Kurnadi,A. Kuznetsov,M. Lamont,J. Landgraf,S. Lange,S. LaPointe,F. Laue, J. Lauret, A. Lebedev,R. Lednicky, C. H. Lee,S. Lehocka,M. LeVine,C. Li,Q. Li, Y. Li, G. Lin, X. Lin,S. Lindenbaum,M. Lisa, F. Liu, H. Liu, J. Liu,L. Liu,T. Ljubicic,W. Llope,R. Longacre,W. Love,Y. Lu,T. Ludlam, D. Lynn,G. Ma,J. Ma,Y. Ma,D. Mahapatra,R. Majka,L. Mangotra,R. Manweiler,S. Margetis, C. Markert,L. Martin,H. Matis,Yu. Matulenko,T. McShane, A. Meschanin,J. Millane,M. Miller,N. Minaev,S. Mioduszewski, A. Mischke,J. Mitchell,B. Mohanty,D. Morozov,M. Munhoz,B. Nandi,C. Nattrass,T. Nayak,J. Nelson,C. Nepali,P. Netrakanti,L. Nogach,S. Nurushev, G. Odyniec,A. Ogawa,V. Okorokov, D. Olson,M. Pachr,S. Pal,Y. Panebratsev,A. Pavlinov,T. Pawlak,T. Peitzmann,V. Perevoztchikov,C. Perkins, W. Peryt,S. Phatak,M. Planinic, J. Pluta,N. Poljak,N. Porile,A. Poskanzer,M. Potekhin,E. Potrebenikova,B. Potukuchi,D. Prindle,C. Pruneau,N. Pruthi, J. Putschke,I. Qattan, R. Raniwala, S. Raniwala,R. Ray,D. Relyea,A. Ridiger,H. Ritter,J. Roberts,O. Rogachevskiy, J. Romero, A. Rose, C. Roy,L. Ruan,M. Russcher,R. Sahoo,I. Sakrejda, T. Sakuma, S. Salur,J. Sandweiss,M. Sarsour,P. Sazhin,J. Schambach,R. Scharenberg,N. Schmitz,J. Seger,I. Selyuzhenkov,P. Seyboth,A. Shabetai,E. Shahaliev,M. Shao,M. Sharma,W. Shen,S. Shimanskiy,E. Sichtermann,F. Simon,R. Singaraju,M. Skoby, N. Smirnov,R. Snellings,P. Sorensen, J. Sowinski,J. Speltz,H. Spinka, B. Srivastava,A. Stadnik,T. Stanislaus,D. Staszak,R. Stock,M. Strikhanov,B. Stringfellow,A. Suaide,M. Suarez,N. Subba,M. Sumbera,X. Sun, Z. Sun,B. Surrow,T. Symons,A. Szanto de Toledo,J. Takahashi,A. Tang,T. Tarnowsky,J. Thomas,A. Timmins,S. Timoshenko,M. Tokarev,T. Trainor,V. Tram,S. Trentalange,R. Tribble,O. Tsai,J. Ulery,T. Ullrich,D. Underwood,G. Van Buren,N. van der Kolk,M. van Leeuwen,A. Vander Molen,R. Varma,I. Vasilevski,A. Vasiliev,R. Vernet,S. Vigdor,Y. Viyogi,S. Vokal,S. Voloshin,M. Wada,W. Waggoner, F. Wang, G. Wang, J. Wang,X. Wang,Y. Wang,J. Webb,G. Westfall,C. Whitten,H. Wieman,S. Wissink,R. Witt,J. Wu,Y. Wu,N. Xu,Q. Xu,Z. Xu,P. Yepes,I. K. Yoo,Q. Yue,V. Yurevich,M. Zawisza, W. Zhan,H. Zhang, W. Zhang,Y. Zhang,Z. Zhang,Y. Zhao, C. Zhong,J. Zhou,R. Zoulkarneev,Y. Zoulkarneeva,A. Zubarev,J. Zuo

PHYSICAL REVIEW LETTERS（2008）

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摘要

We report a new STAR measurement of the longitudinal double-spin asymmetry A(LL) for inclusive jet production at midrapidity in polarized p+p collisions at a center-of-mass energy of root s = 200 GeV. The data, which cover jet transverse momenta 5 < p(T) < 30 GeV/c, are substantially more precise than previous measurements. They provide significant new constraints on the gluon spin contribution to the nucleon spin through the comparison to predictions derived from one global fit to polarized deep-inelastic scattering measurements. They provide significant new constraints on the gluon spin contribution to the nucleon spin through the comparison to predictions derived from one global fit to polarized deep-inelastic scattering measurements.

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