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dc.contributor.authorAaltonen, Timo Antero
dc.contributor.authorÁlvarez González, Bárbara
dc.contributor.authorCasal Laraña, Bruno
dc.contributor.authorCuevas Maestro, Francisco Javier
dc.contributor.authorGómez Gramuglio, Gervasio
dc.contributor.authorRodrigo Anoro, Teresa 
dc.contributor.authorRuiz Jimeno, Alberto 
dc.contributor.authorScodellaro, Luca
dc.contributor.authorVila Álvarez, Iván
dc.contributor.authorVilar Cortabitarte, Rocío 
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2013-04-29T12:50:36Z
dc.date.available2013-04-29T12:50:36Z
dc.date.issued2010-03-11
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.urihttp://hdl.handle.net/10902/2002
dc.description.abstractWe report a measurement of the lifetime of the Λb0 baryon in decays to the Λc+π- final state in a sample corresponding to 1.1  fb-1 collected in pp̅ collisions at √s=1.96  TeV by the CDF II detector at the Tevatron collider. Using a sample of about 3000 fully reconstructed Λb0 events we measure τ(Λb0)=1.401±0.046(stat)±0.035(syst)  ps (corresponding to cτ(Λb0)=420.1±13.7(stat)±10.6(syst)  μm, where c is the speed of light). The ratio of this result and the world average B0 lifetime yields τ(Λb0)/τ(B0)=0.918±0.038 (stat) and (syst), in good agreement with recent theoretical predictions.es_ES
dc.description.sponsorshipWe thank the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. This work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A. P. Sloan Foundation; the Bundesministerium für Bildung und Forschung, Germany; the World Class University Program, the National Research Foundation of Korea; the Science and Technology Facilities Council and the Royal Society, UK; the Institut National de Physique Nucleaire et Physique des Particules/CNRS; the Russian Foundation for Basic Research; the Ministerio de Ciencia e Innovación, and Programa Consolider Ingenio 2010, Spain; the Slovak R&D Agency; and the Academy of Finland.
dc.format.extent8 p.es_ES
dc.language.isoenges_ES
dc.publisherAmerican Physical Societyes_ES
dc.rights© 2010 The American Physical Societyes_ES
dc.sourcePhysical Review Letters, 2010, 104, 102002es_ES
dc.titleMeasurement of the Λb0 Lifetime in Λb0→Λc+π- Decays in pp̅ Collisions at √s=1.96  TeVes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttp://dx.doi.org/10.1103/PhysRevLett.104.102002
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1103/PhysRevLett.104.102002
dc.type.versionpublishedVersiones_ES


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