Mass and lifetime measurements of bottom and charm baryons in $p\bar p$ collisions at $\sqrt{s}= 1.96 TeV T Aaltonen , Seoyoung Noh , P Maestro , D Goldin , E Gerchtein , M Stancari , S Errede , W Parker , P Catastini , A T Laasanen , M Datta , J Thom , I A Budagov , M Cordelli , G Latino , C Hays , D Carlsmith , D Cauz , S Seidel , G Chlachidze , S Wolbers , M Dorigo , G Punzi , A Clark , M Tecchio , T Yoshida , J R Dittmann , G Introzzi , Andrew Ivanov , E Gramellini , A Annovi , F Happacher , T Schwarz , D Bortoletto , Angelo Di Canto , Unki Yang , E Pianori , R E Hughes , R Roser , Thomas Muller , G Piacentino , I Oksuzian , K J Knoepfel , P Mazzanti , G Flanagan , Pingkun Teng , P Barria , F Devoto , A Beretvas , K K Joo , J C Maestro , M Shochet , L Ristori , S Tokar , A Mazzacane , K Sliwa , T J Phillips , H Frisch , J Antos , C M Ginsburg , Tiehui Ted Liu , M Cremonesi , A Bocci , P Butti , G Bellettini , G Apollinari , C Grossopilcher , V E Barnes , F Prokoshin , D Waters , E E Schmidt , J Yoh , J Lys , S Uozumi , G Busetto , Jieun Kim , J Huston , S R Hahn , A Simonenko , Y Oh , M Chertok , Matthew Jones , T Bae , A T Goshaw , R Mcnulty , G Velev , F Ruffini , A Bhatti , K Kondo , D Jang , N Ranjan , Kihyeon Cho , Jaison Lee , Vladimir Glagolev , T Rodriguez , Y Kato , S Malik , R Carosi , M Corbo , G P Yeh , D Tonelli , J Freeman , Pawel De Barbaro , V Papadimitriou , Miguel Vidal Marono , F Bedeschi , P Lukens , V Saveliev , S Camarda , M Donofrio , I Yu , M Ronzani , C Paus , B Carls , P Murat , Alessandra Luca , P Totaro , M Herndon , A Artikov , Donghee Kim , C Bromberg , E Thomson , A Golossanov , Alexei Semenov , J Heinrich , Azeddine Kasmi , F D Snider , D Yamato , M Gold , G Gomezceballos , Qiuguang Liu , Yenchu Chen , M Hare , M Iori , Juan Pablo Fernandez Ramos , R Orava , Mohammad Hussein , Y Nagai , S Z Shalhout , I Nakano , Weiming Yao , K Tollefson , M Mussini , T Wright , A Bodek , S Leo , M Kreps , R Lysak , J D Lewis , D Amidei , Ryan Christopher Edgar , A Elagin , I Shreybertecker , Konstantinos Vellidis , A Pranko , J Boudreau , A Aurisano , L Santi , T Okusawa , D J Cox , S Behari , P Giromini , J Bellinger , A Cerri , H Wolfe , K Potamianos , V Cavaliere , John R Smith , F Azfar , M Bauce , K Goulianos , D Lucchesi , G Pauletta , F Margaroli , S Giagu , W Ketchum , Ijoseph Kroll , Hao Liu , S H Oh , Maria Veronica Sorin , K Hatakeyama , M Derrico , C Plager , F Sforza , L Scodellaro , J Pilot , Joao Guimaraes Da Costa , Zhenbin Wu , G Lungu , D Torretta , Alberto Ruiz Jimeno , P Lujan , Y Seiya , I Suslov , Oscar Gonzalez Lopez , Mario Martinezperez , V Giakoumopoulou , N Kimura , Youngjin Kim , T Nigmanov , Koji Sato , Christopher Clarke , S Poprocki , Y Takeuchi , P Wittich , K Burkett , C P Marino , T Kuhr , R D Field , Justin Kien Keung , K Pitts , Andrea Castro , A Calamba , M Goncharov , Chen Zhou , D Glenzinski , C A Cox , P Mehtala , P Wagner , Bruno Casal Larana , Kazuhiro Yamamoto , M Franklin , A Boveia , J Strologas , S Amerio , K Lannon , R Forrest , T R Junk , F Canelli , P Garosi , M Vogel , S Zucchelli , B Auerbach , K Gibson , P Bussey , Jiyeon Han , D Mietlicki , S Donati , M Casarsa , W Ashmanskas , B Esham , J S Wilson , J Naganoma , Daniel Cruz Alonso , Eunju Jeon , A Sukhanov , G B Yu , K Yorita , J Nett , Jonathan L Rosner , B Jayatilaka , N Dascenzo , A Mukherjee , M E Mattson , K Yi , Y C Yang , K Takemasa , L Marchese , P E Karchin , D Chokheli , B A Barnett , S Torre , S Rolli , H S Budd , A Napier , M Kruse , Richard Dante St Denis , A Limosani , Hao Song , A V Kotwal , F Scuri , P Palni , R Erbacher , H Miyake , Kazuhiko Hara , Changseong Moon , A Savoynavarro , L Cerrito , N Moggi , L Ortolan , Jesus Manuel Vizan Garcia , D Whiteson , V Rusu , M J Morello , W Badgett , M Campanelli , A B Wicklund , P Wilson , Keith Matera , I Gorelov , Elsa Fabiola Vazquezvalencia , P Bartos , U Husemann , A Manousakiskatsikakis , T Harringtontaber , S R Hou , Andrew Mehta , M Kurata , L Demortier , T Kamon , Sandra Leone , A Loginov , M Kambeitz , F Ukegawa , E Brucken , G Giurgiu , R Culbertson , L Brigliadori , H H Williams , H S Lee , A F Garfinkel , Camilla Galloni , Salvador Carrillo Moreno , S Moed , G Manca , F Rimondi , M Deninno , D J Kong , James Andrew Hocker , S Lockwitz , T Arisawa , T Miao , R Wallny , D Stentz , E James , M J Kim , C Mesropian , Yu Zeng , I Fernandez , Caterina Vernieri , G Volpi , P Schlabach , Y Sudo , M E Convery , J Conway , E Lipeles , L Nodulman , C Pagliarone , J Konigsberg , G Chiarelli , J Lueck , N Giokaris , M Cavallisforza , J Russ , A Anastassov , S Jindariani , T Tomura , K Ebina , A Driutti , P Renton , D Benjamin , Rocio Vilar Cortabitarte , A Lister , H Gerberich , S Y Jun , Benedetto Di Ruzza , F Ptohos , A Barbarogaltieri , J Nachtman , R F Harr , G Gomez , P F Shepard , S Grinstein , M Shimojima , Y Funakoshi , Jose Enrique Palencia , A Buzatu , M Lancaster , A Robson , Ziqing Hong , A Zanetti , K R Bland , L Pondrom , A Mitra , M H Kirby , T Shears , L Oakes , V Thukral , B Blumenfeld , Songming Wang , W C Wester , J A Appel , T Yang , S B Kim , Sinead Farrington , C Neu , Hyunsoo Kim , S Lammel , M Paulini , M Trovato , J Asaadi , R Moore , S Wilbur , Jian Tang , O Francisco , B L Winer , M Rescigno , W K Sakumoto , Xin Wu , W Hopkins , B Kilminster , R Madrak , Y Sakurai , D Toback PHYSICAL REVIEW D（2014）
摘要
We report on mass and lifetime measurements of several ground state charmed and bottom baryons, using a data sample corresponding to 9.6 fb(-1) from p (p) over bar collisions at pffisffiffi root s = 1.96 TeV and recorded with the Collider Detector at Fermilab. Baryon candidates are reconstructed from data collected with an online event selection designed for the collection of long-lifetime heavy-flavor decay products and a second event selection designed to collect J/psi -> mu(+)mu(-) candidates. First evidence for the process Omega(-)(b) -> Omega(0)(c)pi(-) is presented with a significance of 3.3 sigma. We measure the following baryon masses: M(Xi(0)(c)) = 2470.85 +/- 0.24(stat) +/- 0.55(syst) MeV/c(2); M(Xi(+)(c)) = 2468.00 +/- 0.18(stat) +/- 0.51(syst) MeV/c(2); M(Lambda(b)) = 5620.15 +/- 0.31(stat) +/- 0.47(syst) MeV/c(2); M(Xi(-)(b)) = 5793.4 +/- 1.8(stat) +/- 0.7(syst) MeV/c(2); M(Xi(0)(b)) = 5788.7 +/- 4.3(stat) +/- 1.4(syst) MeV/c(2); and M(Omega(-)(b)) = 6047.5 +/- 3.8(stat) +/- 0.6(syst) MeV/c(2): The isospin splitting of the Xi(-0)(b) states is found to be M(Xi(-)(b)) - M(Xi(0)(b)) = 4.7 +/- 4.7(stat) +/- 0.7(syst)MeV/c(2). The isospin splitting of the Xi(0,vertical bar)(c) states is found to be M(Xi(0)(c)) - M(Xi(0)(c)) = 2.85 +/- 0.30(stat) +/- 0.04(syst) MeV/c(2). The following lifetime measurements are made: tau(Lambda(b)) = 1.565 +/- 0.035(stat) +/- 0.020(syst) ps; tau(Xi(-)(b)) = 1.32 +/- 0.14(stat) +/- 0.02(syst) ps; tau(Omega(-)(b)) = 1.66(-0.40)(+0.53)(stat) +/- 0.02(syst) ps:
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