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Measurement of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>Λ</mml:mi><mml:mi>b</mml:mi><mml:mn>0</mml:mn></mml:msubsup></mml:math>Lifetime in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>Λ</mml:mi><mml:mi>b</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mo>→</mml:mo><mml:msubsup><mml:mi>Λ</mml:mi><mml:mi>c</mml:mi><mml:mo>+</mml:mo></mml:msubsup><mml:msup><mml:mi>π</mml:mi><mml:mo>−</mml:mo></…

T. Aaltonen,J. Adelman,Bárbara Álvarez González,S. Amerio,D. Amidei,A. Anastassov,A. Annovi,J. Antoš,G. Apollinari,Artur Apresyan,T. Arisawa,A. Artikov,J. Asaadi,W. Ashmanskas,A. Attal,A. Aurisano,F. Azfar,W. Badgett,A. Barbaro‐Galtieri,Virgil E Barnes,B. A. Barnett,Patrizia Barria,Pavol Bartoš,G. Bauer,P. H. Beauchemin,F. Bedeschi,D. Beecher,S. Behari,G. Bellettini,J. Bellinger,D. Benjamin,A. Beretvas,A. Bhatti,M. Binkley,D. Bisello,I. Bizjak,R. E. Blair,C. Blocker,B. Blumenfeld,Andrea Bocci,A. Bodek,V. Boisvert,D. Bortoletto,J. Boudreau,A. Boveia,B. Brau,A. Bridgeman,L. Brigliadori,C. Bromberg,E. Brubaker,J. Budagov,H. S. Budd,S. Budd,K. Burkett,G. Busetto,P. Bussey,A. Buzatu,K. L. Byrum,S. Cabrera,C. Calancha,Stefano Camarda,M. Campanelli,M. Campbell,F. Canelli,A. Canepa,B. Carls,D. Carlsmith,R. Carosi,S. Carrillo,S. Carron,B. Casal,Massimo Casarsa,A. Castro,P. Catastini,D. Cauz,V. Cavaliere,M. Cavalli‐Sforza,A. Cerri,L. Cerrito,S. Chang,Y. C. Chen,M. Chertok,G. Chiarelli,G. Chlachidze,Frank Chlebana,K. Cho,D. Chokheli,John Paul Chou,K. Chung,W. H. Chung,Y. S. Chung,T. Chwalek,C. I. Ciobanu,M. A. Ciocci,A. Clark,D. Clark,G. Compostella,M. E. Convery,J. Conway,M. Corbo,M. Cordelli,C. A. Cox,D. J. Cox,F. Crescioli,C. Cuenca Almenar,J. Cuevas,R. Culbertson,J. C. Cully,D. Dagenhart,M. Datta,T. Davies,Pawel de Barbaro,S. De Cecco,A. Deisher,G. De Lorenzo,M. Dell’Orso,C. Deluca,L. Demortier,J. Deng,M. Deninno,M. d’Errico,A. Di Canto,G. P. Di Giovanni,B. Di Ruzza,Jay Dittmann,Monica d'Onofrio,S. Donati,P. Dong,Tommaso Dorigo,Sourabh Dube,K. Ebina,A. Elagin,R. Erbacher,D. Errede,S. Errede,N. Ershaidat,Ricardo Eusebi,H. C. Fang,Sinead Farrington,W. T. Fedorko,R. G. Feild,M. Feindt,J. P. Fernández,C. Ferrazza,Richard D Field,G. Flanagan,R. Forrest,M. J. Frank,M. Franklin,J. Freeman,I. Furic,M. Gallinaro,J. Galyardt,F. Garberson,J. E. Garcia,A. F. Garfinkel,P. Garosi,H. Gerberich,D. W. Gerdes,A. Gessler,S. Giagu,V. A. Giakoumopoulou,P. Giannetti,K. Gibson,J. L. Gimmell,C. M. Ginsburg,N. Giokaris,M. P. Giordani,P. Giromini,M. Giunta,G. Giurgiu,V. Glagolev,D. Glenzinskí,M. Gold,N. Goldschmidt,A. Golossanov,Gervasio Gomez,G. Gómez-Ceballos,M. Goncharov,O. González,I. Gorelov,A. T. Goshaw,K. Goulianos,A. Gresele,S. Grinstein,C. Grosso-Pilcher,R. C. Group,U. Grundler,J. Guimarães da Costa,Z. Gunay-Unalan,C. Haber,S. R. Hahn,Eva Halkiadakis,B. Y. Han,J. Han,F. Happacher,K. Hara,D. Hare,M. Hare,R. Harr,M. Hartz,K. Hatakeyama,Chris Hays,M. Heck,J. Heinrich,Matthew Herndon,J. Heuser,S. Hewamanage,D. Hidas,Christopher Hill,D. Hirschbuehl,A. Höcker,S. Hou,M. Houlden,S.-C. Hsu,R. E. Hughes,M. Hurwitz,Ulrich Husemann,M. Hussein,J. Huston,Joe Incandela,G. Introzzi,M. Iori,A. Ivanov,E. James,D. Jang,Bodhitha Jayatilaka,E. J. Jeon,M. K. Jha,Sergo Jindariani,William Joseph Johnson,M. Jones,K. K. Joo,S. Y. Jun,Jerome Jung,T. R. Junk,T. Kamon,Deepak Kar,P. E. Karchin,Y. Kato,R. Kephart,W. Ketchum,J. Keung,V. Khotilovich,Benjamin Kilminster,D. H. Kim,H. S. Kim,H. W. Kim,J. E. Kim,M. J. Kim,S. B. Kim,S. H. Kim,Y. K. Kim,N. Kimura,L. Kirsch,S. Klimenko,K. Kondo,D. J. Kong,J. Konigsberg,Andrey Korytov,A. Kotwal,M. Kreps,J. Kroll,D. Krop,N. Krumnack,M. Kruse,Vyacheslav Krutelyov,T. Kuhr,N. P. Kulkarni,M. Kurata,S. Kwang,A. T. Laasanen,S. Lami,Stephan Lammel,M. Lancaster,R. Lander,Kevin Lannon,Amitabh Lath,G. Latino,I. Lazzizzera,T. LeCompte,E. Lee,H. S. Lee,J. S. Lee,S. W. Lee,S. Leone,J. D. Lewis,C. Lin,Jacob Linacre,M. Lindgren,E. Lipeles,A. Lister,D. O. Litvintsev,C. Liu,T. Liu,N. Lockyer,A. Loginov,L. Lovas,D. Lucchesi,J. Lueck,P. Lujan,P. Lukens,G. Lungu,J. Lys,R. Lysák,D. MacQueen,R. Madrak,K. Maeshima,K. Makhoul,Petar Maksimović,S. Malde,Sarah Malik,G. Manca,A. Manousakis-Katsikakis,F. Margaroli,C. Marino,C. Marino,A. Martin,M. Martin,Victoria Jane Martin,M. Martı́nez,R. Mart́ínez-Ballaŕın,Paolo Mastrandrea,M. Mathis,M. E. Mattson,P. Mazzanti,K. S. McFarland,P. McIntyre,R. McNulty,A. Mehta,P. Mehtälä,A. Menzione,C. Mesropian,T. Miao,D. Mietlicki,N. Miladinovic,R. Miller,C. Mills,M. Milnik,A. Mitra,G. Mitselmakher,H. Miyake,S. Moëd,N. Moggi,M. N. Mondragón,Chang-Seong Moon,R. W. Moore,M. J. Morello,J. Morlock,P. Movilla Fernandez,J. Mülmenstädt,A. Mukherjee,Th. Müller,R. Mumford,P. Murat,M. Mussini,Jane Nachtman,Y. Nagai,J. Naganoma,Koji Nakamura,I. Nakano,A. Napier,J. Nett,C. Neu,Mark Neubauer,S. Neubauer,J. Nielsen,L. Nodulman,Michael L. Norman,O. Norniella,E. Nurse,L. Oakes,S. H. Oh,Y. D. Oh,I. Oksuzian,T. Okusawa,R. Orava,Kenneth Österberg,S. Pagan Griso,C. Pagliarone,E. Palencia,V. Papadimitriou,A. Papaikonomou,A. A. Paramanov,B. Parks,S. Pashapour,J. Patrick,G. Pauletta,M. Paulini,Christoph Paus,Thomas Peiffer,D. Pellett,A. Penzo,T. J. Phillips,G. Piacentino,Elisabetta Pianori,L. Pinera,K. Pitts,C. Plager,L. Pondrom,K. Potamianos,O. Poukhov,F. Prokoshin,A. Pronko,F. Ptohos,E. Pueschel,G. Punzi,J. Pursley,J. H. Rademacker,A. Rahaman,V. Ramakrishnan,N. Ranjan,I. Redondo,P. Renton,M. Renz,M. Rescigno,S. Richter,F. Rimondi,L. Ristori,A. Robson,T. Rodrigo,T. Rodriguez,E. Rogers,S. Rolli,R. Roser,M. Rossi,Roberto Rossin,Probir Roy,A. Ruiz,James Russ,V. Rusu,B. Rutherford,H. Saarikko,Alexei Safonov,W. K. Sakumoto,L. Santi,L. Sartori,K. Sato,A. Savoy-Navarro,P. Schlabach,A. Schmidt,E. E. Schmidt,M. A. Schmidt,M. P. Schmidt,M. Schmitt,Thomas Schwarz,L. Scodellaro,A. Scribano,F. Scuri,A. Sedov,Sally Seidel,Y. Seiya,A. Semenov,L. Sexton-Kennedy,Federico Sforza,Anna Sfyrla,S. Z. Shalhout,T. Shears,P. F. Shepard,M. Shimojima,S. Shiraishi,M. Shochet,Y. Shon,I. Shreyber,А. Симоненко,P. Sinervo,A. N. Sisakyan,A. J. Slaughter,J. Slaunwhite,K. Sliwa,J. Smith,F. D. Snider,R. Snihur,A. Soha,Sunil Somalwar,V. Sorı́n,P. Squillacioti,Marcel Michael Stanitzki,R. St. Denis,B. Stelzer,Oliver Stelzer-Chilton,D. Stentz,John Strologas,G. L. Strycker,J. S. Suh,А. Суханов,И. Суслов,A. Taffard,Ryuichi Takashima,Y. Takeuchi,R. Tanaka,J. Tang,M. Tecchio,P. K. Teng,Julia Thom,J. Thome,G. A. Thompson,E. Thomson,P. Tipton,P. Ttito-Guzmán,Slawek Tkaczyk,D. Toback,S. Tokár,K. Tollefson,T. Tomura,D. Tonelli,S. Torre,D. Torretta,P. Totaro,S. Tourneur,M. Trovato,S. Y. Tsai,Yanjun Tu,N. Turini,F. Ukegawa,S. Uozumi,N. Van Remortel,A. Varganov,E. Vataga,F. Vázquez,G. Velev,C. Vellidis,M. Vidal,Iván Vila,R. Vilar,Marcelo Vogel,Igor Volobouev,G. Volpi,P. Wagner,R. G. Wagner,R. L. Wagner,Wolfgang Wagner,Jeannine Wagner-Kuhr,T. Wakisaka,Rainer Wallny,S. M. Wang,A. Warburton,D. Waters,M. Weinberger,J. Weinelt,W. C. Wester,B. Whitehouse,Daniel Whiteson,A. B. Wicklund,E. Wicklund,S. Wilbur,G. Williams,H. H. Williams,P. Wilson,Brian L Winer,Peter Wittich,S. Wolbers,C. Wolfe,H. Wolfe,T. Wright,X. Wu,Frank Würthwein,Avraham Yagil,K. Yamamoto,J. Yamaoka,U. K. Yang,Yi-Lin Yang,W-M. Yao,G. P. Yeh,K. Yi,J. Yoh,Kohei Yorita,T. Yoshida,G. B. Yu,I. Yu,S. S. Yu,J. C. Yun,A. Zanetti,Y. Zeng,X. Zhang,Yangheng Zheng,S. Zucchelli

Physics

Lambda

Particle physics

2010

We report a measurement of the lifetime of the ${\ensuremath{\Lambda}}_{b}^{0}$ baryon in decays to the ${\ensuremath{\Lambda}}_{c}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ final state in a sample corresponding to $1.1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected in $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ by the CDF II detector at the Tevatron collider. Using a sample of about 3000 fully reconstructed ${\ensuremath{\Lambda}}_{b}^{0}$ events we measure $\ensuremath{\tau}({\ensuremath{\Lambda}}_{b}^{0})=1.401\ifmmode\pm\else\textpm\fi{}0.046(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.035(\mathrm{syst})\text{ }\text{ }\mathrm{ps}$ (corresponding to $c\ensuremath{\tau}({\ensuremath{\Lambda}}_{b}^{0})=420.1\ifmmode\pm\else\textpm\fi{}13.7(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}10.6(\mathrm{syst})\text{ }\text{ }\ensuremath{\mu}\mathrm{m}$, where $c$ is the speed of light). The ratio of this result and the world average ${B}^{0}$ lifetime yields $\ensuremath{\tau}({\ensuremath{\Lambda}}_{b}^{0})/\ensuremath{\tau}({B}^{0})=0.918\ifmmode\pm\else\textpm\fi{}0.038$ (stat) and (syst), in good agreement with recent theoretical predictions.

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“Measurement of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>Λ</mml:mi><mml:mi>b</mml:mi><mml:mn>0</mml:mn></mml:msubsup></mml:math>Lifetime in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>Λ</mml:mi><mml:mi>b</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mo>→</mml:mo><mml:msubsup><mml:mi>Λ</mml:mi><mml:mi>c</mml:mi><mml:mo>+</mml:mo></mml:msubsup><mml:msup><mml:mi>π</mml:mi><mml:mo>−</mml:mo></…” is a paper by T. Aaltonen J. Adelman Bárbara Álvarez González S. Amerio D. Amidei A. Anastassov A. Annovi J. Antoš G. Apollinari Artur Apresyan T. Arisawa A. Artikov J. Asaadi W. Ashmanskas A. Attal A. Aurisano F. Azfar W. Badgett A. Barbaro‐Galtieri Virgil E Barnes B. A. Barnett Patrizia Barria Pavol Bartoš G. Bauer P. H. Beauchemin F. Bedeschi D. Beecher S. Behari G. Bellettini J. Bellinger D. Benjamin A. Beretvas A. Bhatti M. Binkley D. Bisello I. Bizjak R. E. Blair C. Blocker B. Blumenfeld Andrea Bocci A. Bodek V. Boisvert D. Bortoletto J. Boudreau A. Boveia B. Brau A. Bridgeman L. Brigliadori C. Bromberg E. Brubaker J. Budagov H. S. Budd S. Budd K. Burkett G. Busetto P. Bussey A. Buzatu K. L. Byrum S. Cabrera C. Calancha Stefano Camarda M. Campanelli M. Campbell F. Canelli A. Canepa B. Carls D. Carlsmith R. Carosi S. Carrillo S. Carron B. Casal Massimo Casarsa A. Castro P. Catastini D. Cauz V. Cavaliere M. Cavalli‐Sforza A. Cerri L. Cerrito S. Chang Y. C. Chen M. Chertok G. Chiarelli G. Chlachidze Frank Chlebana K. Cho D. Chokheli John Paul Chou K. Chung W. H. Chung Y. S. Chung T. Chwalek C. I. Ciobanu M. A. Ciocci A. Clark D. Clark G. Compostella M. E. Convery J. Conway M. Corbo M. Cordelli C. A. Cox D. J. Cox F. Crescioli C. Cuenca Almenar J. Cuevas R. Culbertson J. C. Cully D. Dagenhart M. Datta T. Davies Pawel de Barbaro S. De Cecco A. Deisher G. De Lorenzo M. Dell’Orso C. Deluca L. Demortier J. Deng M. Deninno M. d’Errico A. Di Canto G. P. Di Giovanni B. Di Ruzza Jay Dittmann Monica d'Onofrio S. Donati P. Dong Tommaso Dorigo Sourabh Dube K. Ebina A. Elagin R. Erbacher D. Errede S. Errede N. Ershaidat Ricardo Eusebi H. C. Fang Sinead Farrington W. T. Fedorko R. G. Feild M. Feindt J. P. Fernández C. Ferrazza Richard D Field G. Flanagan R. Forrest M. J. Frank M. Franklin J. Freeman I. Furic M. Gallinaro J. Galyardt F. Garberson J. E. Garcia A. F. Garfinkel P. Garosi H. Gerberich D. W. Gerdes A. Gessler S. Giagu V. A. Giakoumopoulou P. Giannetti K. Gibson J. L. Gimmell C. M. Ginsburg N. Giokaris M. P. Giordani P. Giromini M. Giunta G. Giurgiu V. Glagolev D. Glenzinskí M. Gold N. Goldschmidt A. Golossanov Gervasio Gomez G. Gómez-Ceballos M. Goncharov O. González I. Gorelov A. T. Goshaw K. Goulianos A. Gresele S. Grinstein C. Grosso-Pilcher R. C. Group U. Grundler J. Guimarães da Costa Z. Gunay-Unalan C. Haber S. R. Hahn Eva Halkiadakis B. Y. Han J. Han F. Happacher K. Hara D. Hare M. Hare R. Harr M. Hartz K. Hatakeyama Chris Hays M. Heck J. Heinrich Matthew Herndon J. Heuser S. Hewamanage D. Hidas Christopher Hill D. Hirschbuehl A. Höcker S. Hou M. Houlden S.-C. Hsu R. E. Hughes M. Hurwitz Ulrich Husemann M. Hussein J. Huston Joe Incandela G. Introzzi M. Iori A. Ivanov E. James D. Jang Bodhitha Jayatilaka E. J. Jeon M. K. Jha Sergo Jindariani William Joseph Johnson M. Jones K. K. Joo S. Y. Jun Jerome Jung T. R. Junk T. Kamon Deepak Kar P. E. Karchin Y. Kato R. Kephart W. Ketchum J. Keung V. Khotilovich Benjamin Kilminster D. H. Kim H. S. Kim H. W. Kim J. E. Kim M. J. Kim S. B. Kim S. H. Kim Y. K. Kim N. Kimura L. Kirsch S. Klimenko K. Kondo D. J. Kong J. Konigsberg Andrey Korytov A. Kotwal M. Kreps J. Kroll D. Krop N. Krumnack M. Kruse Vyacheslav Krutelyov T. Kuhr N. P. Kulkarni M. Kurata S. Kwang A. T. Laasanen S. Lami Stephan Lammel M. Lancaster R. Lander Kevin Lannon Amitabh Lath G. Latino I. Lazzizzera T. LeCompte E. Lee H. S. Lee J. S. Lee S. W. Lee S. Leone J. D. Lewis C. Lin Jacob Linacre M. Lindgren E. Lipeles A. Lister D. O. Litvintsev C. Liu T. Liu N. Lockyer A. Loginov L. Lovas D. Lucchesi J. Lueck P. Lujan P. Lukens G. Lungu J. Lys R. Lysák D. MacQueen R. Madrak K. Maeshima K. Makhoul Petar Maksimović S. Malde Sarah Malik G. Manca A. Manousakis-Katsikakis F. Margaroli C. Marino C. Marino A. Martin M. Martin Victoria Jane Martin M. Martı́nez R. Mart́ínez-Ballaŕın Paolo Mastrandrea M. Mathis M. E. Mattson P. Mazzanti K. S. McFarland P. McIntyre R. McNulty A. Mehta P. Mehtälä A. Menzione C. Mesropian T. Miao D. Mietlicki N. Miladinovic R. Miller C. Mills M. Milnik A. Mitra G. Mitselmakher H. Miyake S. Moëd N. Moggi M. N. Mondragón Chang-Seong Moon R. W. Moore M. J. Morello J. Morlock P. Movilla Fernandez J. Mülmenstädt A. Mukherjee Th. Müller R. Mumford P. Murat M. Mussini Jane Nachtman Y. Nagai J. Naganoma Koji Nakamura I. Nakano A. Napier J. Nett C. Neu Mark Neubauer S. Neubauer J. Nielsen L. Nodulman Michael L. Norman O. Norniella E. Nurse L. Oakes S. H. Oh Y. D. Oh I. Oksuzian T. Okusawa R. Orava Kenneth Österberg S. Pagan Griso C. Pagliarone E. Palencia V. Papadimitriou A. Papaikonomou A. A. Paramanov B. Parks S. Pashapour J. Patrick G. Pauletta M. Paulini Christoph Paus Thomas Peiffer D. Pellett A. Penzo T. J. Phillips G. Piacentino Elisabetta Pianori L. Pinera K. Pitts C. Plager L. Pondrom K. Potamianos O. Poukhov F. Prokoshin A. Pronko F. Ptohos E. Pueschel G. Punzi J. Pursley J. H. Rademacker A. Rahaman V. Ramakrishnan N. Ranjan I. Redondo P. Renton M. Renz M. Rescigno S. Richter F. Rimondi L. Ristori A. Robson T. Rodrigo T. Rodriguez E. Rogers S. Rolli R. Roser M. Rossi Roberto Rossin Probir Roy A. Ruiz James Russ V. Rusu B. Rutherford H. Saarikko Alexei Safonov W. K. Sakumoto L. Santi L. Sartori K. Sato A. Savoy-Navarro P. Schlabach A. Schmidt E. E. Schmidt M. A. Schmidt M. P. Schmidt M. Schmitt Thomas Schwarz L. Scodellaro A. Scribano F. Scuri A. Sedov Sally Seidel Y. Seiya A. Semenov L. Sexton-Kennedy Federico Sforza Anna Sfyrla S. Z. Shalhout T. Shears P. F. Shepard M. Shimojima S. Shiraishi M. Shochet Y. Shon I. Shreyber А. Симоненко P. Sinervo A. N. Sisakyan A. J. Slaughter J. Slaunwhite K. Sliwa J. Smith F. D. Snider R. Snihur A. Soha Sunil Somalwar V. Sorı́n P. Squillacioti Marcel Michael Stanitzki R. St. Denis B. Stelzer Oliver Stelzer-Chilton D. Stentz John Strologas G. L. Strycker J. S. Suh А. Суханов И. Суслов A. Taffard Ryuichi Takashima Y. Takeuchi R. Tanaka J. Tang M. Tecchio P. K. Teng Julia Thom J. Thome G. A. Thompson E. Thomson P. Tipton P. Ttito-Guzmán Slawek Tkaczyk D. Toback S. Tokár K. Tollefson T. Tomura D. Tonelli S. Torre D. Torretta P. Totaro S. Tourneur M. Trovato S. Y. Tsai Yanjun Tu N. Turini F. Ukegawa S. Uozumi N. Van Remortel A. Varganov E. Vataga F. Vázquez G. Velev C. Vellidis M. Vidal Iván Vila R. Vilar Marcelo Vogel Igor Volobouev G. Volpi P. Wagner R. G. Wagner R. L. Wagner Wolfgang Wagner Jeannine Wagner-Kuhr T. Wakisaka Rainer Wallny S. M. Wang A. Warburton D. Waters M. Weinberger J. Weinelt W. C. Wester B. Whitehouse Daniel Whiteson A. B. Wicklund E. Wicklund S. Wilbur G. Williams H. H. Williams P. Wilson Brian L Winer Peter Wittich S. Wolbers C. Wolfe H. Wolfe T. Wright X. Wu Frank Würthwein Avraham Yagil K. Yamamoto J. Yamaoka U. K. Yang Yi-Lin Yang W-M. Yao G. P. Yeh K. Yi J. Yoh Kohei Yorita T. Yoshida G. B. Yu I. Yu S. S. Yu J. C. Yun A. Zanetti Y. Zeng X. Zhang Yangheng Zheng S. Zucchelli published in 2010. It has an Open Access status of “green”. You can read and download a PDF Full Text of this paper here.