This article presents a measurement of the top quark mass using the CDF II detector at Fermilab. Colliding beams of protons and antiprotons at Fermilab's Tevatron (root s=1.96 TeV) produce top/antitop pairs, which decay to W(+)W(-)b (b) over bar; events are selected where one W decays to hadrons and the other W decays to either e or mu plus a neutrino. The data sample corresponds to an integrated luminosity of approximately 318 pb(-1). A total of 165 u (u) over bar events are separated into four subsamples based on jet transverse energy thresholds and the number of b jets identified by reconstructing a displaced vertex. In each event, the reconstructed top quark invariant mass is determined by minimizing a chi(2) for the overconstrained kinematic system. At the same time, the mass of the hadronically decaying W boson is measured in the same event sample. The observed W boson mass provides an in situ improvement in the determination of the hadronic jet energy scale. A simultaneous likelihood fit of the reconstructed top quark masses and the W boson invariant masses in the data sample to distributions from simulated signal and background events gives a top quark mass of 173.5(-3.8)(+3.9) GeV/c(2).
Top quark mass measurement using the template method in the lepton plus jets channel at CDF II / Abulencia, A; Acosta, D; Adelman, J; Affolder, T; Akimoto, T; Albrow, Mg; Ambrose, D; Amerio, S; Amidei, D; Anastassov, A; Anikeev, K; Annovi, A; Antos, J; Aoki, M; Apollinari, G; Arguin, Jf; Arisawa, T; Artikov, A; Ashmanskas, W; Attal, A; Azfar, F; AZZI BACCHETTA, P; Azzurri, P; Bacchetta, N; Bachacou, H; Badgett, W; BARBARO GALTIERI, A; Barnes, Ve; Barnett, Ba; Baroiant, S; Bartsch, V; Bauer, G; Bedeschi, F; Behari, S; Belforte, S; Bellettini, G; Bellinger, J; Belloni, A; BEN HAIM, E; Benjamin, D; Beretvas, A; Beringer, J; Berry, T; Bhatti, A; Binkley, M; Bisello, D; Bishai, M; Blair, Re; Blocker, C; Bloom, K; Blumenfeld, B; Bocci, A; Bodek, A; Boisvert, V; Bolla, G; Bolshov, A; Bortoletto, D; Boudreau, J; Bourov, S; Boveia, A; Brau, B; Bromberg, C; Brubaker, E; Budagov, J; Budd, Hs; Budd, S; Burkett, K; Busetto, G; Bussey, P; Byrum, Kl; Cabrera, S; Campanelli, M; Campbell, M; Canelli, F; 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[10.1103/physrevd.73.032003]
Top quark mass measurement using the template method in the lepton plus jets channel at CDF II
ABULENCIA A; ACOSTA D; ADELMAN J; AFFOLDER T; AKIMOTO T; ALBROW MG; AMBROSE D; AMERIO S; AMIDEI D; ANASTASSOV A; ANIKEEV K; ANNOVI A; ANTOS J; AOKI M; APOLLINARI G; ARGUIN JF; ARISAWA T; ARTIKOV A; ASHMANSKAS W; ATTAL A; AZFAR F; AZZI BACCHETTA P; AZZURRI P; BACCHETTA N; BACHACOU H; BADGETT W; BARBARO GALTIERI A; BARNES VE; BARNETT BA; BAROIANT S; BARTSCH V; BAUER G; BEDESCHI F; BEHARI S; BELFORTE S; BELLETTINI G; BELLINGER J; BELLONI A; BEN HAIM E; BENJAMIN D; BERETVAS A; BERINGER J; BERRY T; BHATTI A; BINKLEY M; BISELLO D; BISHAI M; BLAIR RE; BLOCKER C; BLOOM K; BLUMENFELD B; BOCCI A; BODEK A; BOISVERT V; BOLLA G; BOLSHOV A; BORTOLETTO D; BOUDREAU J; BOUROV S; BOVEIA A; BRAU B; BROMBERG C; BRUBAKER E; BUDAGOV J; BUDD HS; BUDD S; BURKETT K; BUSETTO G; BUSSEY P; BYRUM KL; CABRERA S; CAMPANELLI M; CAMPBELL M; CANELLI F; CANEPA A; CARLSMITH D; CAROSI R; CARRON S; CASARSA M; CASTRO A; CATASTINI P; CAUZ D; CAVALLI SFORZA M; CERRI A; CERRITO L; CHANG SH; CHAPMAN J; CHEN YC; CHERTOK M; CHIARELLI G; CHLACHIDZE G; CHLEBANA F; CHO I; CHO K; CHOKHELI D; CHOU JP; CHU PH; CHUANG SH; CHUNG K; CHUNG WH; CHUNG YS; CILJAK M; CIOBANU CI; CIOCCI MA; CLARK A; CLARK D; COCA M; CONNOLLY A; CONVERY ME; CONWAY J; COOPER B; COPIC K; CORDELLI M; CORTIANA G; CRUZ A; CUEVAS J; CULBERTSON R; CURRAT C; CYR D; DARONCO S; D'AURIA S; D'ONOFRIO M; DAGENHART D; DE BARBARO P; CECCO SD; DEISHER A; LENTDECKER GD; DELL'ORSO M; DEMERS S; DEMORTIER L; DENG J; DENINNO M; PEDIS DD; DERWENT PF; DIONISI, Carlo ;DITTMANN J; DITURO P; DORR C; DOMINGUEZ A; DONATI S; DONEGA M; DONG P; DONINI J; DORIGO T; DUBE S; EBINA K; EFRON J; EHLERS J; ERBACHER R; ERREDE D; ERREDE S; EUSEBI R; FANG HC; FARRINGTON S; FEDORKO I; FEDORKO WT; FEILD RG; FEINDT M; FERNANDEZ JP; FIELD R; FLANAGAN G; FLORES CASTILLO LR; FOLAND A; FORRESTER S; FOSTER GW; FRANKLIN M; FREEMAN JC; FUJII Y; FURIC I; GAJJAR A; GALLINARO M; GALYARDT J; GARCIA JE; SCIVERES MG; GARFINKEL AF; GAY C; GERBERICH H; GERCHTEIN E; GERDES D; GIAGU, Stefano ;GIANNETTI P; GIBSON A; GIBSON K; GINSBURG C; GIOLO K; GIORDANI M; GIUNTA M; GIURGIU G; GLAGOLEV V; GLENZINSKI D; GOLD M; GOLDSCHMIDT N; GOLDSTEIN J; GOMEZ G; GOMEZ CEBALLOS G; GONCHAROV M; MARGAROLI, Fabrizio ;GORELOV I; GOSHAW AT; GOTRA Y; GOULIANOS K; GRESELE A; GRIFFITHS M; GRINSTEIN S; GROSSO PILCHER C; GRUNDLER U; DA COSTA JG; HABER C; HAHN SR; HAHN K; HALKIADAKIS E; HAMILTON A; HAN BY; HANDLER R; HAPPACHER F; HARA K; HARE M; HARPER S; HARR RF; HARRIS RM; HATAKEYAMA K; HAUSER J; HAYS C; HAYWARD H; HEIJBOER A; HEINEMANN B; HEINRICH J; HENNECKE M; HERNDON M; HEUSER J; HIDAS D; HILL CS; HIRSCHBUEHL D; HOCKER A; HOLLOWAY A; HOU S; HOULDEN M; HSU SC; HUFFMAN BT; HUGHES RE; HUSTON J; IKADO K; INCANDELA J; INTROZZI G; IORI M; ISHIZAWA Y; IVANOV A; IYUTIN B; JAMES E; JANG D; JAYATILAKA B; JEANS D; JENSEN H; JEON EJ; JONES M; JOO KK; JUN SY; JUNK TR; KAMON T; KANG J; KARAGOZ UNEL M; KARCHIN PE; KATO Y; KEMP Y; KEPHART R; KERZEL U; KHOTILOVICH V; KILMINSTER B; KIM DH; KIM HS; KIM JE; KIM MJ; KIM MS; KIM SB; KIM SH; KIM YK; KIRBY M; KIRSCH L; KLIMENKO S; KLUTE M; KNUTESON B; KO BR; KOBAYASHI H; KONDO K; KONG DJ; KONIGSBERG J; KORDAS K; KORYTOV A; KOTWAL AV; KOVALEV A; KRAUS J; KRAVCHENKO I; KREPS M; KREYMER A; KROLL J; KRUMNACK N; KRUSE M; KRUTELYOV V; KUHLMANN SE; KUSAKABE Y; KWANG S; LAASANEN AT; LAI S; LAMI S; LAMMEL S; LANCASTER M; LANDER RL; LANNON K; LATH A; LATINO G; LAZZIZZERA I; LECCI C; LECOMPTE T; LEE J; LEE J; LEE SW; LEE YJ; LEFEVRE R; LEONARDO N; LEONE S; LEVY S; LEWIS JD; LI K; LIN C; LIN CS; LINDGREN M; LIPELES E; LISS TM; LISTER A; LITVINTSEV DO; LIU T; LIU Y; LOCKYER NS; LOGINOV A; LORETI M; LOVERRE, Pier Ferruccio ;LU RS; LUCCHESI D; LUJAN P; LUKENS P; LUNGU G; LYONS L; LYS J; LYSAK R; LYTKEN E; MACK P; MACQUEEN D; MADRAK R; MAESHIMA K; MAKSIMOVIC P; MANCA G; MARGAROLI F; MARGINEAN R; MARINO C; MARTIN A; MARTIN M; MARTIN V; MARTINEZ M; MARUYAMA T; MATSUNAGA H; MATTSON ME; MAZINI R; MAZZANTI P; MCFARLAND KS; MCGIVERN D; MCINTYRE P; MCNAMARA P; MCNULTY R; MEHTA A; MENZEMER S; MENZIONE A; MERKEL P; MESSINA, Andrea ;MESSINA A; VON DER MEY M; MIAO T; MILADINOVIC N; MILES J; MILLER R; MILLER JS; MILLS C; MILNIK M; MIQUEL R; MISCETTI S; MITSELMAKHER G; MIYAMOTO A; MOGGI N; MOHR B; MOORE R; MORELLO M; FERNANDEZ PM; MULMENSTADT J; MUKHERJEE A; MULHEARN M; MULLER T; MUMFORD R; MURAT P; NACHTMAN J; NAHN S; NAKANO I; NAPIER A; NAUMOV D; NECULA V; NEU C; NEUBAUER MS; NIELSEN J; NIGMANOV T; NODULMAN L; NORNIELLA O; OGAWA T; OH SH; OH YD; OKUSAWA T; OLDEMAN R; ORAVA R; OSTERBERG K; PAGLIARONE C; PALENCIA E; PAOLETTI R; PAPADIMITRIOU V; PAPIKONOMOU A; PARAMONOV AA; PARKS B; PASHAPOUR S; PATRICK J; PAULETTA G; PAULINI M; PAUS C; PELLETT DE; PENZO A; PHILLIPS TJ; PIACENTINO G; PIEDRA J; PITTS K; PLAGER C; PONDROM L; POPE G; PORTELL X; POUKHOV O; POUNDER N; PRAKOSHYN F; PRONKO A; PROUDFOOT J; PTOHOS F; PUNZI G; PURSLEY J; RADEMACKER J; RAHAMAN A; RAKITIN A; RAPPOCCIO S; RATNIKOV F; REISERT B; REKOVIC V; VAN REMORTEL N; RENTON P; RESCIGNO M; RICHTER S; RIMONDI F; RINNERT K; RISTORI L; ROBERTSON WJ; ROBSON A; RODRIGO T; ROGERS E; ROLLI S; ROSER R; ROSSI M; ROSSIN R; ROTT C; RUIZ A; RUSS J; RUSU V; RYAN D; SAARIKKO H; SABIK S; SAFONOV A; SAKUMOTO WK; SALAMANNA G; SALTO O; SALTZBERG D; SANCHEZ C; SANTI L; SARKAR S; SATO K; SAVARD P; SAVOY NAVARRO A; SCHEIDLE T; SCHLABACH P; SCHMIDT EE; SCHMIDT MP; SCHMITT M; SCHWARZ T; SCODELLARO L; SCOTT AL; SCRIBANO A; SCURI F; SEDOV A; SEIDEL S; SEIYA Y; SEMENOV A; SEMERIA F; SEXTON KENNEDY L; SFILIGOI I; SHAPIRO MD; SHEARS T; SHEPARD PF; SHERMAN D; SHIMOJIMA M; SHOCHET M; SHON Y; SHREYBER I; SIDOTI A; SIEGRIST J; SILL A; SINERVO P; SISAKYAN A; SJOLIN J; SKIBA A; SLAUGHTER AJ; SLIWA K; SMIRNOV D; SMITH JR; SNIDER FD; SNIHUR R; SODERBERG M; SOHA A; SOMALWAR S; SORIN V; SPALDING J; SPINELLA F; SQUILLACIOTI P; STANITZKI M; STAVERIS POLYKALAS A; DENIS RS; STELZER B; STELZER CHILTON O; STENTZ D; STROLOGAS J; STUART D; SUH JS; SUKHANOV A; SUMOROK K; SUN H; SUZUKI T; TAFFARD A; TAFIROUT R; TAKASHIMA R; TAKEUCHI Y; TAKIKAWA K; TANAKA M; TANAKA R; TANIMOTO N; TECCHIO M; TENG PK; TERASHI K; TETHER S; THOM J; THOMPSON AS; THOMSON E; TIPTON P; TIWARI V; TKACZYK S; TOBACK D; TOLLEFSON K; TOMURA T; TONELLI D; TONNESMANN M; TORRE S; TORRETTA D; TOURNEUR S; TRISCHUK W; TSUCHIYA R; TSUNO S; TURINI N; UKEGAWA F; UNVERHAU T; UOZUMI S; USYNIN D; VACAVANT L; VAICIULIS A; VALLECORSA S; VARGANOV A; VATAGA E; VELEV G; VERAMENDI G; VESZPREMI V; VICKEY T; VIDAL R; VILA I; VILAR R; VOLLRATH I; VOLOBOUEV I; WURTHWEIN F; WAGNER P; WAGNER RG; WAGNER RL; WAGNER W; WALLNY R; WALTER T; WAN Z; WANG MJ; WANG SM; WARBURTON A; WARD B; WASCHKE S; WATERS D; WATTS T; WEBER M; WESTER WC; WHITEHOUSE B; WHITESON D; WICKLUND AB; WICKLUND E; WILLIAMS HH; WILSON P; WINER BL; WITTICH P; WOLBERS S; WOLFE C; WORM S; WRIGHT T; WU X; WYNNE SM; XIE S; YAGIL A; YAMAMOTO K; YAMAOKA J; YAMASHITA T; YANG C; YANG UK; YAO WM; YEH GP; YOH J; YORITA K; YOSHIDA T; YU I; YU SS; YUN JC; ZANELLO L; ZANETTI A; ZAW I; ZETTI F; ZHANG X; ZHOU J; ZUCCHELLI S.
2006
Abstract
This article presents a measurement of the top quark mass using the CDF II detector at Fermilab. Colliding beams of protons and antiprotons at Fermilab's Tevatron (root s=1.96 TeV) produce top/antitop pairs, which decay to W(+)W(-)b (b) over bar; events are selected where one W decays to hadrons and the other W decays to either e or mu plus a neutrino. The data sample corresponds to an integrated luminosity of approximately 318 pb(-1). A total of 165 u (u) over bar events are separated into four subsamples based on jet transverse energy thresholds and the number of b jets identified by reconstructing a displaced vertex. In each event, the reconstructed top quark invariant mass is determined by minimizing a chi(2) for the overconstrained kinematic system. At the same time, the mass of the hadronically decaying W boson is measured in the same event sample. The observed W boson mass provides an in situ improvement in the determination of the hadronic jet energy scale. A simultaneous likelihood fit of the reconstructed top quark masses and the W boson invariant masses in the data sample to distributions from simulated signal and background events gives a top quark mass of 173.5(-3.8)(+3.9) GeV/c(2).
Citazione
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