Longitudinal double-spin asymmetry and cross section for inclusive jet production in polarized proton collisions at square root of s = 200 GeV

2008-04-14T00:00:00Z (GMT) by BI Abelev MM Aggarwal Z Ahammed J Amonett BD Anderson M Anderson D Arkhipkin GS Averichev Y BaI J Balewski O Barannikova T Kollegger M Kopytine L Kotchenda V Kouchpil KL Kowalik L Ruan M Kramer P Kravtsov A Bellingeri-Laurikainen N van der Kolk MM de Moura AK Bhati VI Kravtsov K Krueger C Kuhn AI Kulikov A Kumar AA Kuznetsov MJ Russcher MAC Lamont JM Landgraf TG Dedovich YG Ma S Lange S LaPointe CJ McClain R Bellwied F Laue J Lauret A Lebedev R Lednicky R Sahoo M DePhillips CH Lee S Raniwala S Lehocka MJ LeVine C Li Q Li TS McShane Y Li F Benedosso G Lin AA Derevschikov X Lin M Botje RV Cadman SJ Lindenbaum MA Lisa F Liu H Liu J Liu L Liu Yu Melnick L Didenko Z Liu T Ljubicic S Bhardwaj M van Leeuwen T Sakuma WJ Llope A Meschanin J Millane ML Miller NG Minaev R Manweiler S Mioduszewski C Mironov TD Gutierrez A Mischke AM Vander Molen H Bichsel S Salur DK Mishra J Mitchell B Mohanty T Dietel L Molnar CF Moore DA Morozov MG Munhoz BK Nandi R Varma B Haag C Nattrass RS Longacre TK Nayak P Djawotho J Bielcik JM Nelson PK Netrakanti LV Nogach SB Nurushev G Odyniec IM Vasilevski A Ogawa V Okorokov TJ Hallman SM Dogra TW Henry M Oldenburg D Olson M Pachr J Bielcikova SK Pal Y Panebratsev AN Vasiliev SY Panitkin AI Pavlinov JB Roberts T Pawlak T Peitzmann J Sandweiss A Hamed V Perevoztchikov C Perkins W Peryt SC Phatak R Vernet LC Bland S Trentalange R Picha M Planinic J Pluta N Poljak M Sarsour N Porile JW Harris J Porter AM Poskanzer GW Hoffmann TJ Humanic M Potekhin E Potrebenikova BVKS Potukuchi SL Blyth D Prindle C Pruneau PS Sazhin J Putschke G Rakness W He WJ Dong SE Vigdor R Raniwala J Schambach RP Scharenberg N Schmitz J Seger I Selyuzhenkov J Bouchet WA Love P Seyboth X Dong LS Barnby VP Viyogi A Shabetai E Shahaliev M Shao M Sharma WQ Shen SS Shimanskiy EP Sichtermann F Simon JE Draper Y Lu RN Singaraju RL Ray AV Brandin S Hepplemann N Smirnov R Snellings G Sood P Sorensen J Sowinski F Du J Speltz HM Spinka T Ludlam A Bhasin B Srivastava A Stadnik TDS Stanislaus B Hippolyte A Bravar R Stock VB Dunin A Stolpovsky M Strikhanov B Stringfellow AAP Suaide S Vokal D Lynn E Sugarbaker M Sumbera Z Sun B Surrow JC Dunlop A Hirsch M Swanger TP Burton TJM Symons A Szanto de Toledo SA Voloshin A Tai GL Ma J Takahashi AH Tang S Margetis T Tarnowsky D Thein JH Thomas E Hjort AR Timmins S Timoshenko XZ Cai M Bystersky M Tokarev JG Ma MR Dutta Mazumdar TA Trainor WT Waggoner F Wang G Wang JS Wang XL Wang MJ Horner SV Razin Y Wang KSFF Guimaraes V Eckardt JW Watson JC Webb GD Westfall A Wetzler H Caines C Whitten H Wieman SW Wissink J Reinnarth R Witt RE Tribble HZ Huang D Magestro J Wood J Wu N Xu QH Xu Z Xu P Yepes M Caldero´n de la Barca Sa´nchez D Relyea M Heinz IK Yoo VI Yurevich W Zhan DP Mahapatra SL Huang H Zhang J Castillo O Catu D Cebra Z Chajecki WR Edwards BE Bonner P Chaloupka S Chattopadhyay HF Chen JH Chen R Majka J Cheng EW Hughes M Cherney A Chikanian L Efimov W Christie A Ridiger JP Coffin TM Cormier MR Cosentino JG Cramer HJ Crawford LK Mangotra D Das S Das G Igo J Baudot S Dash HG Ritter M Daugherity V Emelianov J Engelage G Eppley B Erazmus M Estienne C Markert OD Tsai P Fachini H Long R Fatemi J Fedorisin P Filip E Finch P Jacobs V Fine Y Fisyak J Fu J Ulery CA Gagliardi L Martin OV Rogachevskiy L Gaillard MS Ganti V Ghazikhanian P Ghosh JE Gonzalez YG Gorbunov WW Jacobs T Ullrich H Gos O Grebenyuk D Grosnick JL Romero HS Matis SM Guertin P Jakl F Jia H Jiang PG Jones AM Hoffman EG Judd S Kabana S Bekele K Kang A Rose J Kapitan Yu A Matulenko M Kaplan D Keane A Kechechyan DG Underwood YVu Khodyrev BC Kim J Kiryluk A Kisiel EM Kislov C Roy VV Belaga SR Klein N Gupta A Kocoloski G Van Buren DD Koetke
We report a measurement of the longitudinal double-spin asymmetry A(LL) and the differential cross section for inclusive midrapidity jet production in polarized proton collisions at s=200 GeV. The cross section data cover transverse momenta 5 < p(T)< 50 GeV/c and agree with next-to-leading order perturbative QCD evaluations. The A(LL) data cover 5 < p(T)< 17 GeV/c and disfavor at 98% C.L. maximal positive gluon polarization in the polarized nucleon.

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