%K COLLISIONS, PHYSICS %J PHYS REV LETT %L discovery132037 %I AMER PHYSICAL SOC %O © 2010 The American Physical Society %X We report a measurement of the ratio of the t (t) over bar to Z/gamma* production cross sections in root s = 1.96 TeV p (p) over bar collisions using data corresponding to an integrated luminosity of up to 4.6 fb(-1), collected by the CDF II detector. The t (t) over bar cross section ratio is measured using two complementary methods, a b-jet tagging measurement and a topological approach. By multiplying the ratios by the well-known theoretical Z/gamma* -> ll cross section predicted by the standard model, the extracted t (t) over bar cross sections are effectively insensitive to the uncertainty on luminosity. A best linear unbiased estimate is used to combine both measurements with the result sigma(t (t) over bar) = 7.70 +/- 0.52 pb, for a top-quark mass of 172.5 GeV/c(2). %N 1 %T Measurement of the Ratio sigma(t(t)over-bar)/sigma(Z/gamma*-> ll) and Precise Extraction of the t(t)over-bar Cross Section %V 105 %A T Aaltonen %A J Adelman %A BA Gonzalez %A S Amerio %A D Amidei %A A Anastassov %A A Annovi %A J Antos %A G Apollinari %A A Apresyan %A T Arisawa %A A Artikov %A J Asaadi %A W Ashmanskas %A A Attal %A A Aurisano %A F Azfar %A W Badgett %A A Barbaro-Galtieri %A VE Barnes %A BA Barnett %A P Barria %A P Bartos %A G Bauer %A PH Beauchemin %A F Bedeschi %A D Beecher %A S Behari %A G Bellettini %A J Bellinger %A D Benjamin %A A Beretvas %A A Bhatti %A M Binkley %A D Bisello %A I Bizjak %A RE Blair %A C Blocker %A B Blumenfeld %A A Bocci %A A Bodek %A V Boisvert %A D Bortoletto %A J Boudreau %A A Boveia %A B Brau %A A Bridgeman %A L Brigliadori %A C Bromberg %A E Brubaker %A J Budagov %A HS Budd %A S Budd %A K Burkett %A G Busetto %A P Bussey %A A Buzatu %A KL Byrum %A S Cabrera %A C Calancha %A S Camarda %A M Campanelli %A M Campbell %A F Canelli %A A Canepa %A B Carls %A D Carlsmith %A R Carosi %A S Carrillo %A S Carron %A B Casal %A M Casarsa %A A Castro %A P Catastini %A D Cauz %A V Cavaliere %A M Cavalli-Sforza %A A Cerri %A L Cerrito %A SH Chang %A YC Chen %A M Chertok %A G Chiarelli %A G Chlachidze %A F Chlebana %A K Cho %A D Chokheli %A JP Chou %A K Chung %A WH Chung %A YS Chung %A T Chwalek %A CI Ciobanu %A MA Ciocci %A A Clark %A D Clark %A G Compostella %A ME Convery %A J Conway %A M Corbo %A M Cordelli %A CA Cox %A DJ Cox %A F Crescioli %A CC Almenar %A J Cuevas %A R Culbertson %A JC Cully %A D Dagenhart %A M Datta %A T Davies %A P de Barbaro %A S De Cecco %A A Deisher %A G De Lorenzo %A M Dell'Orso %A C Deluca %A L Demortier %A J Deng %A M Deninno %A M d'Errico %A A Di Canto %A GP di Giovanni %A B Di Ruzza %A JR Dittmann %A M D'Onofrio %A S Donati %A P Dong %A T Dorigo %A S Dube %A K Ebina %A A Elagin %A R Erbacher %A D Errede %A S Errede %A N Ershaidat %A R Eusebi %A HC Fang %A S Farrington %A WT Fedorko %A RG Feild %A M Feindt %A JP Fernandez %A C Ferrazza %A R Field %A G Flanagan %A R Forrest %A MJ Frank %A M Franklin %A JC Freeman %A I Furic %A M Gallinaro %A J Galyardt %A F Garberson %A JE Garcia %A AF Garfinkel %A P Garosi %A H Gerberich %A D Gerdes %A A Gessler %A S Giagu %A V Giakoumopoulou %A P Giannetti %A K Gibson %A JL Gimmell %A CM Ginsburg %A N Giokaris %A M Giordani %A P Giromini %A M Giunta %A G Giurgiu %A V Glagolev %A D Glenzinski %A M Gold %A N Goldschmidt %A A Golossanov %A G Gomez %A G Gomez-Ceballos %A M Goncharov %A O Gonzalez %A I Gorelov %A AT Goshaw %A K Goulianos %A A Gresele %A S Grinstein %A C Grosso-Pilcher %A RC Group %A U Grundler %A JG da Costa %A Z Gunay-Unalan %A C Haber %A SR Hahn %A E Halkiadakis %A BY Han %A JY Han %A F Happacher %A K Hara %A D Hare %A M Hare %A RF Harr %A M Hartz %A K Hatakeyama %A C Hays %A M Heck %A J Heinrich %A M Herndon %A J Heuser %A S Hewamanage %A D Hidas %A CS Hill %A D Hirschbuehl %A A Hocker %A S Hou %A M Houlden %A SC Hsu %A RE Hughes %A M Hurwitz %A U Husemann %A M Hussein %A J Huston %A J Incandela %A G Introzzi %A M Iori %A A Ivanov %A E James %A D Jang %A B Jayatilaka %A EJ Jeon %A MK Jha %A S Jindariani %A W Johnson %A M Jones %A KK Joo %A SY Jun %A JE Jung %A TR Junk %A T Kamon %A D Kar %A PE Karchin %A Y Kato %A R Kephart %A W Ketchum %A J Keung %A V Khotilovich %A B Kilminster %A DH Kim %A HS Kim %A HW Kim %A JE Kim %A MJ Kim %A SB Kim %A SH Kim %A YK Kim %A N Kimura %A L Kirsch %A S Klimenko %A K Kondo %A DJ Kong %A J Konigsberg %A A Korytov %A AV Kotwal %A M Kreps %A J Kroll %A D Krop %A N Krumnack %A M Kruse %A V Krutelyov %A T Kuhr %A NP Kulkarni %A M Kurata %A S Kwang %A AT Laasanen %A S Lami %A S Lammel %A M Lancaster %A RL Lander %A K Lannon %A A Lath %A G Latino %A I Lazzizzera %A T LeCompte %A E Lee %A HS Lee %A JS Lee %A SW Lee %A S Leone %A JD Lewis %A CJ Lin %A J Linacre %A M Lindgren %A E Lipeles %A A Lister %A DO Litvintsev %A C Liu %A T Liu %A NS Lockyer %A A Loginov %A L Lovas %A D Lucchesi %A J Lueck %A P Lujan %A P Lukens %A G Lungu %A J Lys %A R Lysak %A D MacQueen %A R Madrak %A K Maeshima %A K Makhoul %A P Maksimovic %A S Malde %A S Malik %A G Manca %A A Manousakis-Katsikakis %A F Margaroli %A C Marino %A CP Marino %A A Martin %A V Martin %A M Martinez %A R Martinez-Ballarin %A P Mastrandrea %A M Mathis %A ME Mattson %A P Mazzanti %A KS McFarland %A P McIntyre %A R McNulty %A A Mehta %A P Mehtala %A A Menzione %A C Mesropian %A T Miao %A D Mietlicki %A N Miladinovic %A R Miller %A C Mills %A M Milnik %A A Mitra %A G Mitselmakher %A H Miyake %A S Moed %A N Moggi %A MN Mondragon %A CS Moon %A R Moore %A MJ Morello %A J Morlock %A PM Fernandez %A J Mulmenstadt %A A Mukherjee %A T Muller %A P Murat %A M Mussini %A J Nachtman %A Y Nagai %A J Naganoma %A K Nakamura %A I Nakano %A A Napier %A J Nett %A C Neu %A MS Neubauer %A S Neubauer %A J Nielsen %A L Nodulman %A M Norman %A O Norniella %A E Nurse %A L Oakes %A SH Oh %A YD Oh %A I Oksuzian %A T Okusawa %A R Orava %A K Osterberg %A SP Griso %A C Pagliarone %A E Palencia %A V Papadimitriou %A A Papaikonomou %A AA Paramanov %A B Parks %A S Pashapour %A J Patrick %A G Pauletta %A M Paulini %A C Paus %A T Peiffer %A DE Pellett %A A Penzo %A TJ Phillips %A G Piacentino %A E Pianori %A L Pinera %A K Pitts %A C Plager %A L Pondrom %A K Potamianos %A O Poukhov %A F Prokoshin %A A Pronko %A F Ptohos %A E Pueschel %A G Punzi %A J Pursley %A J Rademacker %A A Rahaman %A V Ramakrishnan %A N Ranjan %A I Redondo %A P Renton %A M Renz %A M Rescigno %A S Richter %A F Rimondi %A L Ristori %A A Robson %A T Rodrigo %A T Rodriguez %A E Rogers %A S Rolli %A R Roser %A M Rossi %A R Rossin %A P Roy %A A Ruiz %A J Russ %A V Rusu %A B Rutherford %A H Saarikko %A A Safonov %A WK Sakumoto %A L Santi %A L Sartori %A K Sato %A A Savoy-Navarro %A P Schlabach %A A Schmidt %A EE Schmidt %A MA Schmidt %A MP Schmidt %A M Schmitt %A T Schwarz %A L Scodellaro %A A Scribano %A F Scuri %A A Sedov %A S Seidel %A Y Seiya %A A Semenov %A L Sexton-Kennedy %A F Sforza %A A Sfyrla %A SZ Shalhout %A T Shears %A PF Shepard %A M Shimojima %A S Shiraishi %A M Shochet %A Y Shon %A I Shreyber %A A Simonenko %A P Sinervo %A A Sisakyan %A AJ Slaughter %A J Slaunwhite %A K Sliwa %A JR Smith %A FD Snider %A R Snihur %A A Soha %A S Somalwar %A V Sorin %A P Squillacioti %A M Stanitzki %A RS Denis %A B Stelzer %A O Stelzer-Chilton %A D Stentz %A J Strologas %A GL Strycker %A JS Suh %A A Sukhanov %A I Suslov %A A Taffard %A R Takashima %A Y Takeuchi %A R Tanaka %A J Tang %A M Tecchio %A PK Teng %A J Thom %A J Thome %A GA Thompson %A E Thomson %A P Tipton %A P Ttito-Guzman %A S Tkaczyk %A D Toback %A S Tokar %A K Tollefson %A T Tomura %A D Tonelli %A S Torre %A D Torretta %A P Totaro %A S Tourneur %A M Trovato %A SY Tsai %A Y Tu %A N Turini %A F Ukegawa %A S Uozumi %A N van Remortel %A A Varganov %A E Vataga %A F Vazquez %A G Velev %A C Vellidis %A M Vidal %A I Vila %A R Vilar %A M Vogel %A I Volobouev %A G Volpi %A P Wagner %A RG Wagner %A RL Wagner %A W Wagner %A J Wagner-Kuhr %A T Wakisaka %A R Wallny %A SM Wang %A A Warburton %A D Waters %A M Weinberger %A J Weinelt %A WC Wester %A B Whitehouse %A D Whiteson %A AB Wicklund %A E Wicklund %A S Wilbur %A G Williams %A HH Williams %A P Wilson %A BL Winer %A P Wittich %A S Wolbers %A C Wolfe %A H Wolfe %A T Wright %A X Wu %A F Wurthwein %A A Yagil %A K Yamamoto %A J Yamaoka %A UK Yang %A YC Yang %A WM Yao %A GP Yeh %A K Yi %A J Yoh %A K Yorita %A T Yoshida %A GB Yu %A I Yu %A SS Yu %A JC Yun %A A Zanetti %A Y Zeng %A X Zhang %A Y Zheng %A S Zucchelli %A . CDF Collaboration %D 2010