Measurement of the Electron Charge Asymmetry inpp¯→W+X→eν+XEvents ats=1.96  TeV

V M Abazov,J Yu,S Söldner-Rembold,F Déliot,N Gollub,Y A Yatsunenko,P Banerjee,P Houben,G R Snow,A Leflat,E Kajfasz,D Duggan,P Vint,M Ahsan,T J Kim,D Wicke,B Quinn,G S Muanza,A White,Y M Kharzheev,P Neustroev,J M Butler,J Cammin,N J Buchanan,E Shabalina,S F Novaes,P Svoisky,W M Van Leeuwen,B Tuchming,C Tully,T Millet,H S Mao,Y Liu,L Duflot,A Jonckheere,A Alton,M Diesburg,A Evdokimov,I Iashvili,M Owen,V M Podstavkov,S Beale,P Slattery,Y Arnoud,S P Denisov,P Bargassa,F Fiedler,M Pangilinan,J Warchol,Y Pogorelov,M Besançon,K Yip,M P Sanders,A Patwa,M Begel,C Schwanenberger,H E Fisk,M Titov,T Yasuda,S Chakrabarti,T Gadfort,R F Rodrigues,R Piegaia,G Pawloski,A Sopczak,S Cihangir,G Obrant,J Mitrevski,A Chandra,A Kharchilava,M Arthaud,S Snyder,M Mulhearn,B G Pope,P Lebrun,P Verdier,J Lellouch,A Duperrin,A Melnitchouk,K Harder,K W Merritt,D Brown,M Rijssenbeek,R D Schamberger,A Boehnlein,M Perfilov,B Gómez,T R Wyatt,M Merkin,R Luna,S Calvet,M Hohlfeld,L Wang,B Tiller,R Brock,R K Mommsen,T Schliephake,R Yamada,L Mundim,E Cheu,C De Oliveira Martins,C Magass,E Barberis,T H Burnett,S Burdin,K Peters,S Eno,N Oshima,A Bean,M Verzocchi,P J Van Den Berg,M Wetstein,M Voutilainen,M Begalli,D Boline,K M Chan,T Bose,V N Evdokimov,L Bellantoni,J Sekaric,G Sajot,N Osman,J Stark,N Parashar,J Steele,G Bernardi,K Jakobs,Y Hu,R Hauser,G A Alves,S Zelitch,J Zhu,L Welty-Rieger,H D Wahl,I Torchiani,J Li,H Yin,V Shary,G D Alexeev,J Meyer,D Gillberg,J M Hauptman,M Corcoran,M Strauss,H Evans,S Fu,E W Varnes,M Wayne,R Beuselinck,L Christofek,K Ranjan,J Hays,V Hynek,S Reucroft,G Davies,I A Vasilyev,S Choi,X B Bu,Y Peters,N A Naumann,D Khatidze,P Skubic,D Strom,H Severini,J Kvita,E Strauss,A Sznajder,P Tamburello,R Lipton,N J Hadley,S Blessing,T Kurča,M Demarteau,R Unalan,A Quadt,L Sonnenschein,E De La Cruz-Burelo,D Lincoln,W Geist,H Fox,A Dubey,P C Bhat,P Renkel,L Li,G Safronov,V A Bezzubov,R Kehoe,M Arov,D Mackin,M Naimuddin,Y Gershtein,R K Shivpuri,S Lammers,P Ermolov,G J Otero Y Garzón,J.-F Grivaz,M Jaffré,A Bellavance,P Polozov,R J Madaras,A Khanov,S W Youn,N K Mondal,M Johnson,M Vaupel,F Tissandier,B Hoeneisen,P D Grannis,V Cuplov,D Tsybychev,B Penning,C Biscarat,R Jesik,P Pétroff,M Aoki,S Yacoob,G Blazey,V Bunichev,L Uvarov,H A Neal,S Schlobohm,E Von Toerne,T Scanlon,D Edmunds,M S Rangel,J Clutter,S Fuess,F Couderc,H Schellman,N Parua,R Illingworth,E Carrera,D Smirnov,S M Lietti,K Bloom,E G Zverev,G Savage,F Rizatdinova,P Rubinov,A Bross,I Ripp-Baudot,A Lobodenko,E Nagy,V Gavrilov,W L Prado Da Silva,H Nogima,M Ćwiok,J Snow,D Denisov,M Anastasoaie,P G Mercadante,A Dyshkant,B S Acharya,F Blekman,H Dong,D Onoprienko,L Bagby,G Landsberg,F Villeneuve-Seguier,A Askew,A Haas,R W Moore,A Magerkurth,T Dorland,B Spurlock,D A Stoyanova,F Filthaut,V Zutshi,T Adams,J Ellison,D Lam,M Sosebee,T Nunnemann,Z Liu,D V Bandurin,G W Wilson,V D Elvira,P Calfayan,R Van Kooten,L Sawyer,W M Lee,S Protopopescu,T Christoudias,Ph Gris,N Khalatyan,S J De Jong,Y Enari,W Taylor,G Brooijmans,A S Ito,M Petteni,C P Buszello,J Haley,B Martin,J Qian,K De,U Heintz,S Banerjee,V Kaushik,M Weber,A V Kozelov,A Sánchez-Hernández,W E Cooper,W Geng,D Hedin,N Wermes,H Nilsen,J M Kohli,V V Lipaev,A P Heinson,H J Lubatti,O Mundal,R Hirosky,Y Maravin,S Malik,P Padley,L S Ancu,C Hensel,P A Kasper,I Katsanos,A Rakitine,B Åsman,T Ferbel,M Fortner,D Gelé,S Uvarov,H Da Motta,F Lacroix,Z D Greenwood,L S Vertogradov,V Stolin,T Zhao,Y Scheglov,A L Lyon,G Borissov,G Alkhazov,V Bhatnagar,G Ginther,J M Kalk,S Hagopian,A Meyer,V Buescher,V Sirotenko,S K Park,D Schaile,H D Yoo,G Grenier,J Linnemann,C Jarvis,V O’Dell,T Moulik,B Klima,C E Gerber,J A Benitez,K Herner,C Zeitnitz,A Brandt,B Sanghi,A Schwartzman,P Haefner,M Buehler,J Rieger,A Grohsjean,R Bernhard,M Wobisch,F Chevallier,R Ströhmer,B Abbott,G Watts,R Otec,P Mättig,E M Gregores,S Jabeen,J Guo,J Strandberg,Y Xie,R Ruchti,M Eads,V V Tokmenin,D Chakraborty,J P Negret,P N Ratoff,W Carvalho,S Hossain,D Karmanov,J F Bartlett,B Baldin,V L Malyshev,S Robinson,S Strandberg,S Sumowidagdo,G Weber,H Hoeth,T Andeen,J Osta,D C O’Neil,R Partridge,M Cooke,M Narain,M Shamim,D Vilanova,D Bauer,S Desai,B Vachon,R E Hall,F Guo,P M Tuts,M Rominsky,S Grünendahl,P Baringer,H T Diehl,C Ochando,A Das,L Mendoza,V Siccardi,P Rich,S Kermiche,J Dyer,D Buchholz,D Kau,A Harel,S Uzunyan,I Hall,S B Beri,R Schwienhorst,H Greenlee,A Dominguez,U Bassler,J Piper,J Barreto,O Atramentov,V A Kuzmin,F Badaud,M S Anzelc,M Abolins,Q Z Li,N Varelas,L Stutte,B Zhou,T Hebbeker,D K Cho,A A Shchukin,C Royon,A G Goussiou ,J K Kraus ,S Wimpenny ,S Dugad ,C Bélanger-Champagne ,H Malbouisson ,Z Hubáček ,A García-Bellido ,D R Claes ,D Ćutts ,C Galea ,P A Love ,R L Mccarthy ,H Prosper ,L Dudko ,T Kühl ,G Hamel De Monchenault ,D Wood ,S J Park ,A K.a Maciel ,E Aguiló ,C A Johnson ,P L.m Podesta-Lerma ,M Kirby ,M R Adams ,H Castilla‐Valdez ,P Mal ,M H.l.s Wang ,P Vokáč ,B C.k Casey ,S Cŕéṕe-Renaudin ,M Strang ,Ashok Kumar ,C Ávila ,J G.r Lima ,W C Fisher ,J Hegeman ,K A Johns ,V Šimák ,M Grünewald ,G Gutiérrez ,K Soustružnı́k ,M A Pleier ,C T Potter ,L Živković ,А В Попов ,M C Cousinou ,M Zieliński ,Bernard Andrieu ,C Garćıa ,A C.s Assis Jesus ,D Ziemińska ,J A Parsons ,D Blöch ,Han Liu ,P Jönsson ,P Gutiérrez ,M E Pol ,A Kupčo ,E Boos ,A F Barfuss ,Matthias Kirsch ,M Lokajı́ček ,T Bolton ,Sh Jain ,R G Wagner ,Andreas Wenger ,R Démina ,I A Bertram ,B C Choudhary ,W C Yang ,J Hobbs ,G G Hesketh ,A Ziemiński ,Jaehoon Lim ,J P Konrath ,M Hildreth ,J Degenhardt ,A Juste Rozas ,A Ferapontov ,A J Tanasijczuk

doi:10.1103/physrevlett.101.211801

Abstract

We present a measurement of the electron charge asymmetry in pp[over ]-->W+X-->enu+X events at a center of mass energy of 1.96 TeV using 0.75 fb(-1) of data collected with the D0 detector at the Fermilab Tevatron Collider. The asymmetry is measured as a function of the electron transverse momentum and pseudorapidity in the interval (-3.2, 3.2) and is compared with expectations from next-to-leading order calculations in perturbative quantum chromodynamics. These measurements will allow more accurate determinations of the proton parton distribution functions.

Highlights

18CEA, Irfu, SPP, Saclay, France 19IPHC, Universite Louis Pasteur, CNRS/IN2P3, Strasbourg, France 20IPNL, Universite Lyon 1, CNRS/IN2P3, Villeurbanne, France and Universitede Lyon, Lyon, France 21III
We present a measurement of the electron charge asymmetry in pp" ! W þ X ! e þ X events at a center of mass energy of 1.96 TeV using 0:75 fbÀ1 of data collected with the D0 detector at the Fermilab
Any difference between the u- and d-quark parton distribution functions (PDFs) will result in an asymmetry in the W boson rapidity distribution between Wþ and WÀ boson production [1]