Direct Measurement of theWBoson Width

V M Abazov,J Piper,S Snyder,S M Lietti,T Adams,V Shary,G S Muanza,J Kraus,T Hoang,C Ochando,M Arov,E De La Cruz-Burelo,P Houben,J Ellison,J Stark,P Verdier,L Sonnenschein,D Boline,M Ćwiok,P Rubinov,B Åsman,I Iashvili,D Lincoln,N Huske,M Takahashi,W E Cooper,P Rich,N Osman,G Davies,R Yamada,Y Scheglov,P G Mercadante,J Kvita,M Naimuddin,B Gómez,B S Acharya,J Sekaric,H Evans,E M Gregores,B Calpas,E Shabalina,P D Grannis,A Lobodenko,Ph Gris,F Filthaut,V A Bezzubov,S Yacoob,R Beuselinck,T Dorland,C Xu,R D Schamberger,V M Podstavkov,M Begalli,M Eads,R Otec,D Schaile,M Hohlfeld,P Svoisky,D Smirnov,V Zutshi,E Barberis,D Jamin,A Meyer,H Nogima,G W Wilson,V V Tokmenin,M Verzocchi,L Han,P Haefner,A V Kozelov,R Ruchti,M M Meijer,A Evdokimov,H E Montgomery,F Déliot,M Wetstein,V A Kuzmin,E Carrera,L Li,V D Elvira,S Lammers,H Greenlee,B Quinn,G Ginther,B Spurlock,D Brown,Y Enari,D Wicke,S Hossain,G Blazey,F Badaud,S Protopopescu,T Zhao,L Mendoza,E Cheu,A Askew,S Beale,S Banerjee,C Zeitnitz,L Stutte,I Ripp-Baudot,M Pangilinan,B Baldin,P Lebrun,G Golovanov,M Rijssenbeek,S Robinson,A Quadt,S Grünendahl,P Padley,A Grohsjean,M S Anzelc,D Mackin,S Hagopian,P Pétroff,N K Mondal,G Safronov,W M Van Leeuwen,E Kajfasz,G Facini,T R Wyatt,M Ahsan,P Baringer,G A Alves,A Patwa,I Torchiani,T H Burnett,S Fuess,S Uvarov,S Chakrabarti,D Strom,Z D Greenwood,Y A Yatsunenko,M Narain,J Guo,D Karmanov,H Yin,G Bernardi,C L Mcgivern,U Bassler,V Gavrilov,A Brandt,S Kermiche,D Buchholz,B Tiller,J.-F Grivaz,P Vint,P Neustroev,T Hebbeker,C E Gerber,S Blessing,P Bargassa,P Polozov,A Sopczak,L Uvarov,D Chakraborty,L Mundim,S Dutt,T Andeen,D K Cho,D Vilanova,A Duperrin,J M Kohli,A P Heinson,Y N Kharzheev,Y Gershtein,M Abolins,S J De Jong,S P Denisov,J Osta,M Mulhearn,H Schellman,A Alton,W Geng,M Wobisch,Y Xie,A Dominguez,G Landsberg,K Harder,K M Chan,X B Bu,A Dubey,N Parashar,N Oshima,D A Stoyanova,N Varelas,D Duggan,H Nilsen,T Schliephake,D Edmunds,I Heredia-De La Cruz,J Haley,V Bunichev,F Lacroix,I A Vasilyev,D Menezes,V L Malyshev,D Hedin,H T Diehl,T Moulik,P Mättig,K Devaughan,B Penning,S Uzunyan,C Royon,J A Benitez,M Padilla,F Fiedler,K Bloom,A Melnitchouk,S Söldner-Rembold,O Atramentov,E Strauss,D Bauer,M Diesburg,G D Alexeev,M Jaffré,S Malik,J Snow,M Corcoran,H Severini,S F Novaes,D Lam,P M Tuts,T Kurča,E W Varnes,R Piegaia,R Schwienhorst,J Zhu,C Hensel,C Schwanenberger,S B Beri,P J Van Den Berg,A A Shchukin,T Ferbel,G Weber,S W Cho,S Greder,R Unalan,S Cihangir,G Brooijmans,H D Yoo,J Barreto,M Titov,K Jakobs,J Yu,J F Bartlett,P Skubic,J Lellouch,M S Rangel,M Perfilov,J Cammin,V Hynek,J Hays,Q Z Li,M Strauss,P N Ratoff,M Demarteau,A White,P Slattery,V Kaushik,T Nunnemann,T Scanlon,F Guo,G Savage,M Besançon,I Hall,T Gadfort,D Tsybychev,G R Snow,G Watts,P Calfayan,B Sanghi,B Zhou,N Khalatyan,R Hirosky,A Leflat,M Weber,B Tuchming,V Siccardi,L Bagby,V Sirotenko,A Dyshkant,Z Liu,A Sánchez-Hernández,A Kharchilava,A Khanov,R Brock,E Nagy,J Clutter,A Rakitine,S Choi,J Qian,T Christoudias,M Rominsky,M Wayne,L Duflot,J Backusmayes,P C Bhat,W Carvalho,M Vesterinen,A Harel,W M Lee,M Buehler,K De,B Hoeneisen,M Arthaud,R Partridge,S K Park,S Schlobohm,A Boehnlein,F Rizatdinova,G Obrant,L Bellantoni,S Burdin,M Owen,H Fox,R Magaña-Villalba,S W Youn,H S Lee,H D Wahl,C Tully,P Renkel,T Bose,H E Fisk,R Lipton,J Linnemann,R Jesik,A L Lyon,S Desai,G Alkhazov,G J Otero Y Garzón,R E Hall,A Haas,H J Lubatti,B Klima,R W Moore,M Begel,V Stolin,D V Bandurin,M P Sanders,V V Lipaev,G Borissov,S Zelitch,K Yip,L S Vertogradov,B Martin,N Parua,T Yasuda,S Sumowidagdo,H A Neal,L S Ancu,S Jabeen,V Bhatnagar,A Jonckheere,M Aoki,C P Buszello,M Cooke,K Ranjan,R K Shivpuri,D Denisov,J Orduna,S Calvet,A S Ito,G Grenier,Y Liu,S Jain,M Escalier,V Buescher,D Onoprienko,R Illingworth,O Mundal,R Ströhmer,R Van Kooten,Y Maravin,R Bernhard,M A Carrasco-Lizarraga,W Taylor,J P Negret,A Bross,I Katsanos,K Peters,A Bean,D Khatidze,W Geist,Y Peters,G Sajot,M Prewitt,Y Pogorelov,Y Arnoud,D Gillberg,M Sosebee,M Fortner,R Kehoe,U Heintz,B Abbott,E G Zverev,L Sawyer,Z Ye,J Meyer,M Shamim,J M Hauptman,K Herner,D Johnston,J Warchol,M Merkin,A Chandra,F Couderc,D R Claes ,В Н Евдокимов ,A García-Bellido ,M Strang ,W C Fisher ,M Zieliński ,G G Hesketh ,M Hildreth ,P Jönsson ,Mark Richard James Williams ,M Kirby ,A F Barfuss ,R G Wagner ,Matthias Kirsch ,M Lokajı́ček ,S C Eno ,A J Tanasijczuk ,G Hamel De Monchenault ,Andreas Wenger ,M R Adams ,A Kupčo ,B C Choudhary ,T Bolton ,L Dudko ,K A Johns ,H Castilla‐Valdez ,C A Johnson ,A Ferapontov ,M E Pol ,R Démina ,B C.k Casey ,P Mal ,P Kasper ,M A Pleier ,Yifan Hu ,Ashok Kumar ,M C Cousinou ,Jaehoon Lim ,Z Hubáček ,J P Konrath ,K Soustružnı́k ,D Ćutts ,P A Love ,V Šimák ,C Ávila ,Michael Wang ,M Grünewald ,A G Goussiou ,E Aguiló ,P Vokáč ,R L Mccarthy ,G Gutiérrez ,P Gutiérrez ,Mark D Johnson ,L Živković ,A Popov ,C Galea ,T Kühl ,J Hobbs ,P L.m Podesta-Lerma ,I A Bertram ,A K.a Maciel ,W C Yang ,C Bélanger-Champagne ,R Luna-García ,Ashok Das ,S J Park ,E Boos ,D Ziemińska ,S Wimpenny ,A Juste Rozas ,J A Parsons ,D Wood ,S Strandberg ,J Hegeman

doi:10.1103/physrevlett.103.231802

Abstract

We present a direct measurement of the width of the W boson using the shape of the transverse mass distribution of W->enu candidates selected in 1 fb-1 of data collected with the D0 detector at the Fermilab Tevatron collider in ppbar collisions at sqrt{s}=1.96 TeV. We use the same methods and data sample that were used for our recently published W boson mass measurement, except for the modeling of the recoil, which is done with a new method based on a recoil library. Our result, 2.028 +- 0.072 GeV, is in agreement with the predictions of the standard model.

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