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Observation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>mesons in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mi>¯</mml:mi></mml:mrow></mml:mover></mml:mrow></mml:mrow></mml:math>collisions at<mml:math …

F. Abe,H. Akimoto,A. Akopian,Michael Albrow,A. Amadon,S. R. Amendolia,D. Amidei,J. Antos̆,S. Aota,G. Apollinari,T. Arisawa,T. Asakawa,W. Ashmanskas,M. Ataç,Patrizia Azzi,N. Bacchetta,S. Bagdasarov,M. W. Bailey,Pawel de Barbaro,A. Barbaro-Galtieri,Virgil E Barnes,B. A. Barnett,M. Barone,G. Bauer,Thomas Baumann,F. Bedeschi,S. Behrends,Stefano Belforte,G. Bellettini,J. Bellinger,D. Benjamin,Jim Bensinger,A. Beretvas,J. P. Berge,J. W. Berryhill,S. Bertolucci,S. Bettelli,B. Bevensee,A. Bhatti,K. Biery,C. Bigongiari,M. Binkley,D. Bisello,R. E. Blair,C. Blocker,S. Blusk,A. Bodek,W. Bokhari,G. Bolla,Y. Bonushkin,D. Bortoletto,J. Boudreau,L. Breccia,C. Bromberg,N. Bruner,R. Brunetti,E. Buckley‐Geer,H. S. Budd,K. Burkett,G. Busetto,A. Byon-Wagner,K. L. Byrum,M. Campbell,A. Caner,W. Carithers,D. Carlsmith,J. Cassada,A. Castro,D. Cauz,A. Cerri,P. S. Chang,P. T. Chang,H. Y. Chao,J. Chapman,M. T. Cheng,M. Chertok,G. Chiarelli,C. N. Chiou,F. Chlebana,L. Christofek,M. L. Chu,S. Cihangir,A. Clark,M. Cobal,E. Cocca,M. Contreras,J. Conway,J. Cooper,M. Cordelli,Davide Costanzo,C. Couyoumtzelis,D. Cronin-Hennessy,R. Culbertson,D. Dagenhart,T. Daniels,F. DeJongh,S. Dell’Agnello,M. Dell’Orso,R. Démina,L. Demortier,M. Deninno,P. F. Derwent,T. Devlin,Jay Dittmann,S. Donati,J. Done,Tommaso Dorigo,N. Eddy,K. Einsweiler,J. E. Elias,R. Ely,E. Engels,Wolfram Erdmann,D. Errede,S. Errede,Q. Fan,R. G. Feild,Z. Feng,C. Ferretti,I. Fiori,B. Flaugher,G. W. Foster,M. Franklin,J. Freeman,J. Friedman,Y. Fukui,S. Gadomski,S. Galeotti,M. Gallinaro,O. Ganel,M. Garcia-Sciveres,A. F. Garfinkel,C. Gay,S. Geer,D. W. Gerdes,P. Giannetti,N. Giokaris,P. Giromini,G. Giusti,M. Gold,A. Gordon,A. T. Goshaw,Y. Gotra,K. Goulianos,H. Grassmann,L. Groer,C. Grosso-Pilcher,G. Guillian,J. Guimarães da Costa,R. S. Guo,C. Haber,E. Hafen,S. R. Hahn,R. Hamilton,T. Handa,R. Handler,F. Happacher,K. Hara,A. D. Hardman,R. M. Harris,Frank Hartmann,J. Hauser,E. Hayashi,J. Heinrich,W. Hao,B. Hinrichsen,K. D. Hoffman,Marcus Hohlmann,C. Holck,R. J. Hollebeek,L. Holloway,Zheng Huang,B. T. Huffman,R. Hughes,J. Huston,J. Huth,H. Ikeda,M. Incagli,Joe Incandela,G. Introzzi,J. Iwai,Y. Iwata,E. James,H. Jensen,Umesh Joshi,E. Kajfasz,H. Kambara,T. Kamon,T. Kaneko,K. Karr,H. Kasha,Y. Kato,T. A. Keaffaber,K. Kelley,R. D. Kennedy,R. Kephart,D. Kestenbaum,D. Khazins,T. Kikuchi,B. J. Kim,H. S. Kim,S. H. Kim,Y. K. Kim,L. Kirsch,S. Klimenko,D. Knoblauch,P. Koehn,A. Köngeter,K. Kondo,J. Konigsberg,K. Kordas,Andrey Korytov,E. Kovacs,W. Kowald,J. Kroll,M. Kruse,S. E. Kuhlmann,E. Kuns,K. Kurino,T. Kuwabara,A. T. Laasanen,S. Lami,Stephan Lammel,J. I. Lamoureux,M. Lancaster,M. Lanzoni,G. Latino,T. LeCompte,S. Leone,J. D. Lewis,P. Limon,M. Lindgren,T. M. Liss,J. B. Liu,Y. C. Liu,N. S. Lockyer,Owen Rosser Long,C. Loomis,M. Loreti,D. Lucchesi,P. Lukens,S. Lusin,J. Lys,K. Maeshima,Petar Maksimović,M. Mangano,M. Mariotti,J. P. Marriner,A. Martin,J. A. J. Matthews,P. Mazzanti,P. McIntyre,P. Mélèse,M. Menguzzato,A. Menzione,E. Meschi,S. Metzler,C. Miao,T. Miao,G. Michail,R. Miller,H. Minato,S. Miscetti,M. Mishina,S. Miyashita,N. Moggi,E. F. Moore,Y. Morita,A. Mukherjee,Th. Müller,P. Murat,S. Murgia,H. Nakada,I. Nakano,Charles A. Nelson,D. Neuberger,C. Newman-Holmes,C. Y.P. Ngan,L. Nodulman,A. Nomerotski,S. H. Oh,T. Ohmoto,T. Ohsugi,R. Oishi,M. Okabe,T. Okusawa,J. Olsen,C. Pagliarone,R. Paoletti,V. Papadimitriou,S. P. Pappas,Neeti Parashar,A. Parri,J. Patrick,G. Pauletta,M. Paulini,A. Perazzo,L. Pescara,Michael Peters,T. J. Phillips,G. Piacentino,M. Pillai,K. Pitts,R. Plunkett,A. Pompoš,L. Pondrom,J. Proudfoot,F. Ptohos,G. Punzi,K. Ragan,D. Reher,Markus Reischl,A. Ribon,F. Rimondi,L. Ristori,W. J. Robertson,T. Rodrigo,S. Rolli,L. Rosenson,R. Roser,T. Saab,W. K. Sakumoto,David Saltzberg,Andrea Sansoni,L. Santi,H. Sato,P. Schlabach,E. E. Schmidt,M. P. Schmidt,A. Scott,A. Scribano,S. Segler,Sally Seidel,Y. Seiya,F. Semeria,T. Shah,Marjorie Shapiro,N. M. Shaw,P. F. Shepard,T. Shibayama,M. Shimojima,M. Shochet,J. Siegrist,A. Sill,P. Sinervo,P. Singh,K. Sliwa,Caleb Smith,F. D. Snider,J. Spalding,T. Speer,P. Sphicas,F. Spinella,María Spiropúlu,Leonard Spiegel,L. Stančo,J. Steele,A. Stefanini,R. Ströhmer,John Strologas,F. Strumia,David Stuart,K. Sumorok,Junya Suzuki,T. Suzuki,T. Takahashi,T. Takano,Ryuichi Takashima,K. Takikawa,M. Tanaka,B. Tannenbaum,G. F. Tartarelli,W. Taylor,M. Tecchio,P. K. Teng,Y. Teramoto,Koji Terashi,S. Tether,D. Theriot,T. L. Thomas,R. Thurman-Keup,M. Timko,P. Tipton,A. Titov,S. Tkaczyk,D. Toback,K. Tollefson,A. Tollestrup,H. Toyoda,W. Trischuk,Jorge F de Trocóniz,S. Truitt,J. Tseng,N. Turini,T. Uchida,F. Ukegawa,J. Valls,S. C. van den Brink,S. Vejcik,G. Velev,R. Vidal,R. Vilar,D. Vucinic,R. G. Wagner,R. L. Wagner,J. Wahl,N. B. Wallace,A. M. Walsh,C. Wang,C. H. Wang,M. J. Wang,A. Warburton,Takashi Watanabe,T. Watts,R. Webb,C. Wei,H. Wenzel,W. C. Wester,A. B. Wicklund,E. Wicklund,R. Wilkinson,H. H. Williams,P. Wilson,B. L. Winer,D. Winn,D. Wolinski,J. Wolinski,Steven Worm,X. Wu,J. Wyss,A. Yagil,W-M. Yao,K. Yasuoka,G. P. Yeh,P. Yeh,J. Yoh,C. Yosef,Tomoko Yoshida,I. Yu,A. Zanetti,F. Zetti,S. Zucchelli

Computer science

1998

We report the observation of bottom-charmed mesons ${B}_{c}$ in 1.8 TeV $p\overline{p}$ collisions using the CDF detector at the Fermilab Tevatron. The ${B}_{c}$ mesons were found through their semileptonic decays, ${B}_{c}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}J/\ensuremath{\psi}{l}^{\ifmmode\pm\else\textpm\fi{}}X.$ A fit to the $J/\ensuremath{\psi}l$ mass distribution yielded ${20.4}_{\ensuremath{-}5.5}^{+6.2}$ events from ${B}_{c}$ mesons. A test of the null hypothesis, i.e., an attempt to fit the data with background alone, was rejected at the level of 4.8 standard deviations. By studying the quality of the fit as a function of the assumed ${B}_{c}$ mass, we determined ${M(B}_{c})=6.40\ifmmode\pm\else\textpm\fi{}0.39(\mathrm{stat}.)\ifmmode\pm\else\textpm\fi{}0.13\mathrm{}(\mathrm{syst})\mathrm{}\mathrm{GeV}{/c}^{2}.$ From the distribution of trilepton intersection points in the plane transverse to the beam direction we measured the ${B}_{c}$ lifetime to be $\ensuremath{\tau}{(B}_{c}{)=0.46}_{\ensuremath{-}0.16}^{+0.18}(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.03\mathrm{}(\mathrm{syst})\mathrm{}\mathrm{ps}.$ We also measured the ratio of production cross section times branching fraction for ${B}_{c}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{l}^{+}\ensuremath{\nu}$ relative to that for ${B}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{K}^{+}$ to be $\frac{\ensuremath{\sigma}{(B}_{c})\ifmmode\times\else\texttimes\fi{}{B(B}_{c}\ensuremath{\rightarrow}J/\ensuremath{\psi}l\ensuremath{\nu})}{\ensuremath{\sigma}(B)\ifmmode\times\else\texttimes\fi{}B(\stackrel{\ensuremath{\rightarrow}}{B}J/\ensuremath{\psi}K)}{=0.132}_{\ensuremath{-}0.037}^{+0.041}{(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.031\mathrm{}(\mathrm{syst})}_{\mathrm{\ensuremath{-}}0.020}^{+0.032}(\mathrm{lifetime}).$

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“Observation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>mesons in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mrow><mml:mrow><mml:mover><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mi>¯</mml:mi></mml:mrow></mml:mover></mml:mrow></mml:mrow></mml:math>collisions at<mml:math …” is a paper by F. Abe H. Akimoto A. Akopian Michael Albrow A. Amadon S. R. Amendolia D. Amidei J. Antos̆ S. Aota G. Apollinari T. Arisawa T. Asakawa W. Ashmanskas M. Ataç Patrizia Azzi N. Bacchetta S. Bagdasarov M. W. Bailey Pawel de Barbaro A. Barbaro-Galtieri Virgil E Barnes B. A. Barnett M. Barone G. Bauer Thomas Baumann F. Bedeschi S. Behrends Stefano Belforte G. Bellettini J. Bellinger D. Benjamin Jim Bensinger A. Beretvas J. P. Berge J. W. Berryhill S. Bertolucci S. Bettelli B. Bevensee A. Bhatti K. Biery C. Bigongiari M. Binkley D. Bisello R. E. Blair C. Blocker S. Blusk A. Bodek W. Bokhari G. Bolla Y. Bonushkin D. Bortoletto J. Boudreau L. Breccia C. Bromberg N. Bruner R. Brunetti E. Buckley‐Geer H. S. Budd K. Burkett G. Busetto A. Byon-Wagner K. L. Byrum M. Campbell A. Caner W. Carithers D. Carlsmith J. Cassada A. Castro D. Cauz A. Cerri P. S. Chang P. T. Chang H. Y. Chao J. Chapman M. T. Cheng M. Chertok G. Chiarelli C. N. Chiou F. Chlebana L. Christofek M. L. Chu S. Cihangir A. Clark M. Cobal E. Cocca M. Contreras J. Conway J. Cooper M. Cordelli Davide Costanzo C. Couyoumtzelis D. Cronin-Hennessy R. Culbertson D. Dagenhart T. Daniels F. DeJongh S. Dell’Agnello M. Dell’Orso R. Démina L. Demortier M. Deninno P. F. Derwent T. Devlin Jay Dittmann S. Donati J. Done Tommaso Dorigo N. Eddy K. Einsweiler J. E. Elias R. Ely E. Engels Wolfram Erdmann D. Errede S. Errede Q. Fan R. G. Feild Z. Feng C. Ferretti I. Fiori B. Flaugher G. W. Foster M. Franklin J. Freeman J. Friedman Y. Fukui S. Gadomski S. Galeotti M. Gallinaro O. Ganel M. Garcia-Sciveres A. F. Garfinkel C. Gay S. Geer D. W. Gerdes P. Giannetti N. Giokaris P. Giromini G. Giusti M. Gold A. Gordon A. T. Goshaw Y. Gotra K. Goulianos H. Grassmann L. Groer C. Grosso-Pilcher G. Guillian J. Guimarães da Costa R. S. Guo C. Haber E. Hafen S. R. Hahn R. Hamilton T. Handa R. Handler F. Happacher K. Hara A. D. Hardman R. M. Harris Frank Hartmann J. Hauser E. Hayashi J. Heinrich W. Hao B. Hinrichsen K. D. Hoffman Marcus Hohlmann C. Holck R. J. Hollebeek L. Holloway Zheng Huang B. T. Huffman R. Hughes J. Huston J. Huth H. Ikeda M. Incagli Joe Incandela G. Introzzi J. Iwai Y. Iwata E. James H. Jensen Umesh Joshi E. Kajfasz H. Kambara T. Kamon T. Kaneko K. Karr H. Kasha Y. Kato T. A. Keaffaber K. Kelley R. D. Kennedy R. Kephart D. Kestenbaum D. Khazins T. Kikuchi B. J. Kim H. S. Kim S. H. Kim Y. K. Kim L. Kirsch S. Klimenko D. Knoblauch P. Koehn A. Köngeter K. Kondo J. Konigsberg K. Kordas Andrey Korytov E. Kovacs W. Kowald J. Kroll M. Kruse S. E. Kuhlmann E. Kuns K. Kurino T. Kuwabara A. T. Laasanen S. Lami Stephan Lammel J. I. Lamoureux M. Lancaster M. Lanzoni G. Latino T. LeCompte S. Leone J. D. Lewis P. Limon M. Lindgren T. M. Liss J. B. Liu Y. C. Liu N. S. Lockyer Owen Rosser Long C. Loomis M. Loreti D. Lucchesi P. Lukens S. Lusin J. Lys K. Maeshima Petar Maksimović M. Mangano M. Mariotti J. P. Marriner A. Martin J. A. J. Matthews P. Mazzanti P. McIntyre P. Mélèse M. Menguzzato A. Menzione E. Meschi S. Metzler C. Miao T. Miao G. Michail R. Miller H. Minato S. Miscetti M. Mishina S. Miyashita N. Moggi E. F. Moore Y. Morita A. Mukherjee Th. Müller P. Murat S. Murgia H. Nakada I. Nakano Charles A. Nelson D. Neuberger C. Newman-Holmes C. Y.P. Ngan L. Nodulman A. Nomerotski S. H. Oh T. Ohmoto T. Ohsugi R. Oishi M. Okabe T. Okusawa J. Olsen C. Pagliarone R. Paoletti V. Papadimitriou S. P. Pappas Neeti Parashar A. Parri J. Patrick G. Pauletta M. Paulini A. Perazzo L. Pescara Michael Peters T. J. Phillips G. Piacentino M. Pillai K. Pitts R. Plunkett A. Pompoš L. Pondrom J. Proudfoot F. Ptohos G. Punzi K. Ragan D. Reher Markus Reischl A. Ribon F. Rimondi L. Ristori W. J. Robertson T. Rodrigo S. Rolli L. Rosenson R. Roser T. Saab W. K. Sakumoto David Saltzberg Andrea Sansoni L. Santi H. Sato P. Schlabach E. E. Schmidt M. P. Schmidt A. Scott A. Scribano S. Segler Sally Seidel Y. Seiya F. Semeria T. Shah Marjorie Shapiro N. M. Shaw P. F. Shepard T. Shibayama M. Shimojima M. Shochet J. Siegrist A. Sill P. Sinervo P. Singh K. Sliwa Caleb Smith F. D. Snider J. Spalding T. Speer P. Sphicas F. Spinella María Spiropúlu Leonard Spiegel L. Stančo J. Steele A. Stefanini R. Ströhmer John Strologas F. Strumia David Stuart K. Sumorok Junya Suzuki T. Suzuki T. Takahashi T. Takano Ryuichi Takashima K. Takikawa M. Tanaka B. Tannenbaum G. F. Tartarelli W. Taylor M. Tecchio P. K. Teng Y. Teramoto Koji Terashi S. Tether D. Theriot T. L. Thomas R. Thurman-Keup M. Timko P. Tipton A. Titov S. Tkaczyk D. Toback K. Tollefson A. Tollestrup H. Toyoda W. Trischuk Jorge F de Trocóniz S. Truitt J. Tseng N. Turini T. Uchida F. Ukegawa J. Valls S. C. van den Brink S. Vejcik G. Velev R. Vidal R. Vilar D. Vucinic R. G. Wagner R. L. Wagner J. Wahl N. B. Wallace A. M. Walsh C. Wang C. H. Wang M. J. Wang A. Warburton Takashi Watanabe T. Watts R. Webb C. Wei H. Wenzel W. C. Wester A. B. Wicklund E. Wicklund R. Wilkinson H. H. Williams P. Wilson B. L. Winer D. Winn D. Wolinski J. Wolinski Steven Worm X. Wu J. Wyss A. Yagil W-M. Yao K. Yasuoka G. P. Yeh P. Yeh J. Yoh C. Yosef Tomoko Yoshida I. Yu A. Zanetti F. Zetti S. Zucchelli published in 1998. It has an Open Access status of “green”. You can read and download a PDF Full Text of this paper here.