Top quark mass measurement from dilepton events at CDF II with the matrix-element method

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Garfinkel,M Casarsa,S Lammel,Y Kemp,S Belforte,A Annovi,J C Yun,E E Schmidt,N Moggi,Y C Chen,C Cuenca Almenar,X Wu,P Schlabach,T Scheidle,R Vilar,C Mills,V Krutelyov,K Sliwa,D Bisello,P Savard,L Lyons,A Belloni,F Chlebana,P Merkel,O Saltó,A Boveia,B Stelzer,D Acosta,J Mülmenstädt,D Jang,H Bachacou,A Vaiciulis,H Kobayashi,R Oldeman,S H Oh,D Carlsmith,M Cordelli,S Carron,D Tonelli,A T Laasanen,G Williams,S Amerio,M Kreps,C Dionisi,G Compostella,I Nakano,B T Huffman,T Unverhau,Y Takeuchi,A Rahaman,S Grinstein,C Blocker,G Bolla,M Campanelli,A Hamilton,D Stentz,P F Shepard,K Maeshima,S Nahn,J E Garcia,U Kerzel,R Erbacher,D Macqueen,P Mazzanti,G Salamanna,M Chertok,X Zhang,N Pounder,B Blumenfeld,E Ben Haim,P Catastini,R Marginean,I Cho,S Leone,M A Ciocci,A Yagil,J Conway,S Menzemer,A Kovalev,A Bocci,I Sfiligoi,K Gibson,Y K Kim,F Würthwein,F D Snider,A Semenov,V Necula,A J Slaughter,J Adelman,M Lindgren,E Lytken,U Grundler,J P Chou,A Beretvas,D Waters,A Napier,N Giokaris,T Lecompte,T Shears,L Sexton-Kennedy,P Azzi-Bacchetta,D De Pedis,J Kroll,M Paulini,M Rescigno,J Hauser,P Mcintyre,I Fedorko,R Rossin,S H Chuang,S Rolli,R Eusebi,J E Kim,M Tönnesmann,R Miquel,L Scodellaro,G P Yeh,R.-S Lu,C Grosso-Pilcher,F Scuri,S Cabrera,S Y Jun,P Lujan,S Lami,A Staveris-Polykalas,R G Wagner,C Dörr,S.-C Hsu,A S Thompson,J S Suh,U K Yang,S Budd,F Spinella,D Naumov,V Boisvert,C Pagliarone,M Von Der Mey,C Mesropian,A Scribano,P Giannetti,S Tourneur,T J Phillips,M Aoki,S Sabik,F Ukegawa,J Boudreau,R M Harris,Y D Oh,S Behari,K L Byrum,A Castro,P Dong,L Nodulman,T Ogawa,S Tether,S Rappoccio,S Jindariani,B Brau,S M Wynne,M Goncharov,G Chiarelli,F Bedeschi,D Benjamin,S Kwang,W H Chung,J R Smith,E Lipeles,A B Wicklund,T Arisawa,L Ristori,C Bromberg,G Busetto,P Bussey,C Lin,M Tanaka,D Jeans,L Demortier,A Lister,M Hare,T M Liss,H S Budd,B L Winer,A Bodek,N Goldschmidt,D Toback,J Piedra,N Krumnack,H Jensen,N Van Remortel,S Malde,B Knuteson,S Forrester,K Goulianos,E James,E Palencia,M Klute,R Tanaka,L Pinera,I Vollrath,M Ciljak,M Griffiths,Y Kusakabe,M Deninno,P Tipton,T R Junk,F Margaroli,P H Chu,I Shreyber,P Wagner,M Jones,V Rusu,I Lazzizzera,K Pitts,T Okusawa,B A Barnett,E Rogers,H C Fang,S Demers,S Vallecorsa,K Ebina,A L Scott,W Wagner,I Gorelov,J Bellinger,S W Lee,A Korytov,A Warburton,K Sumorok,V Khotilovich,A Canepa,K Yamamoto,K Sato,S S Yu,A Holloway,C Plager,S Somalwar,V Bartsch,S Pashapour,T Yoshida,C S Hill,A Artikov,J Chapman,B Parks,J Incandela,A Miyamoto,A Mehta,J Yoh,T Yamashita,G B Yu,A Cruz,K Copic,G Latino,M Garcia Sciveres,K Tollefson,K Yorita,M Gallinaro,V Glagolev,D Clark,C Neu,A Mukherjee,R Vidal,A Barbaro-Galtieri,A Safonov,V Papadimitriou,A Foland,S Baroiant,P Wilson,M S Neubauer,M Shimojima,B Mohr,W C Wester,M Lancaster,A Ivanov,D J Kong,Y Ishizawa,F Happacher,A Deisher,B Reisert,R Snihur,P De Barbaro,P Dituro,A Ruiz,A Penzo,T Tomura,S Lai,B Iyutin,F Prakoshyn,N Bacchetta,D Saltzberg,J Lee,D O Litvintsev,M Loreti,B Heinemann,P Mack,X Portell,A Robson,I Zaw,F Cresciolo,C Marino,K Burkett,C Haber,A Menzione,H H Williams,S D’Auria,S Daronco,A Bhatti,N S Lockyer,R Roser,R Mcnulty,A Mitra,K Chung,P E Karchin,M Binkley,B Jayatilaka,V Tiwari,P Murat,N Miladinovic,E Nurse,T Vine,Z Wan,D Usynin,G Piacentino,O Stelzer-Chilton,L Kirsch,C Wolfe,A Taffard,S Tsuno,R Wallny,C Rott,G Bellettini,M Milnik,R Kephart,G Apollinari,S Hou,A Gibson,Z Gunay-Unalan,J Ehlers,E Halkiadakis,A Sedov,S De Cecco,B R Ko,T Kamon,G Pauletta,A Zanetti,M Dell’Orso,J Nielsen,T Nigmanov,J Patrick,T Dorigo,M Campbell,T Suzuki,B Kilminster,L Pondrom,S Sarkar,W Ashmanskas,C Yang,D Chokheli,G Mitselmakher,G Volpi,G Manca,J Thom,A Skiba,T Rodrigo,C S Lin,J Strologas,G Lungu,D Torretta,S Klimenko,F Azfar,A Soha,H Matsunaga,L Santi,C I Ciobanu,A Pronko,G Punzi,N Turini,R Culbertson,R Orava,J Heinrich,D Sherman,R Handler,R G Feild,D Errede,J Kraus,P K Teng,I Volobouev,J Goldstein,I Kravchenko,G W Foster,E J Jeon,L Zanello,A Savoy-Navarro,G Giurgiu,T Spreitzer,N Leonardo,M E Mattson,E Wicklund,R Mumford,S Harper,E Thomson,T Berry,P Loverre,F Canelli,D Bortoletto,M Soderberg,S Donati,S M Wang,J Galyardt,P Wittich,M Iori,A Loginov,J Nachtman,M D’Onofrio,M Herndon,F Zetti,C Paus,G Chlachidze,D Cauz,W J Robertson,P Movilla Fernandez,P F Derwent,E Brubaker,O Poukhov,F Rimondi,J Huston,J Deng,A T Goshaw,M Franklin,P Sinervo,J Pursley,T Akimoto,M E Convery,M Tecchio,S Torre,M Coca,K Hatakeyama,T Wright,M Houlden,F Ratnikov,P Squillacioti,J Naganoma,T Miao,P Giromini,L Cerrito,F Ptohos,M Gold,D Stuart,M Rossi,T Walter,W K Sakumoto,T Liu,Y S Chung,M Spezziga,W Trischuk,R St Denis,M J Kim,A Lath,G Bauer,M Feindt,A Y Rakitin ,A N Sisakyan ,J H Rademacker ,V Reković ,M C Kruse ,A A Affolder ,R Lander ,I K Furic ,Th Müller ,M P Giordani ,R Hughes ,J Sjölin ,A Höcker ,D Pellett ,J Han ,M J Shochet ,J-F Arguin ,W-M Yao ,B Y Han ,M Shapiro ,M Cavalli‐Sforza ,S M Farrington ,R D Field ,R Lysák ,M Albrow ,D Glenzinskí ,T Mäki ,Ryosuke Tsuchiya ,V Veszprémi ,K A Hahn ,J Antos̆ ,J Dittmann ,S C Seidel ,Thomas Schwarz ,C Sánchez ,A Paramonov ,M J Morello ,Y Yang ,C P Hays ,J Freeman ,S Dubé ,R Harr ,V J Martin ,L R Flores Castillo ,K Österberg ,M M Stanitzki ,M Donegà ,A Martín ,J P Fernández ,А Суханов ,G Gómez ,V Sorı́n ,S Tokár ,G Gómez-Ceballos ,A Kotwal ,M Martı́nez ,J S Kang ,J Guimarães Da Costa ,C M Ginsburg ,Michael Henry Schmitt ,P Maksimović ,D W Gerdes ,J Königsberg ,B D Cooper ,R W Moore

doi:10.1103/physrevd.74.032009

Abstract

We describe a measurement of the top quark mass using events with two charged leptons collected by the CDF II detector from $p\bar{p}$ collisions with $\sqrt s = 1.96$ TeV at the Fermilab Tevatron. The likelihood in top mass is calculated for each event by convoluting the leading order matrix element describing $q\bar{q} \to t\bar{t} \to b\ell\nu_{\ell}\bar{b}\ell'\nu_{\ell'}$ with detector resolution functions. The presence of background events in the data sample is modeled using similar calculations involving the matrix elements for major background processes. In a data sample with integrated luminosity of 340 pb$^{-1}$, we observe 33 candidate events and measure $M_{top} = 165.2 \pm 6.1(\textrm{stat.}) \pm 3.4(\textrm{syst.}) \mathrm{~GeV}/c^2.$ This measurement represents the first application of this method to events with two charged leptons and is the most precise single measurement of the top quark mass in this channel.

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