Observation of New Charmless Decays of Bottom Hadrons

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dc.contributor University of Helsinki, Helsinki Institute of Physics (HIP) (-2009) en
dc.contributor University of Helsinki, Helsinki Institute of Physics (HIP) (-2009) en
dc.contributor University of Helsinki, Department of Physics (-2009) en
dc.contributor University of Helsinki, Helsinki Institute of Physics (HIP) (-2009) en
dc.contributor University of Helsinki, Department of Physics (-2009) en
dc.contributor University of Helsinki, Department of Physics (-2009) en
dc.contributor.author Aaltonen, T.
dc.contributor.author Mehtälä, Petteri
dc.contributor.author Orava, Risto
dc.contributor.author Mäki, Tuula
dc.contributor.author Saarikko, Heimo
dc.contributor.author Österberg, Kenneth
dc.contributor.author CDF Collaboration
dc.date.accessioned 2011-01-06T11:50:05Z
dc.date.available 2011-01-06T11:50:05Z
dc.date.issued 2009
dc.identifier.citation Aaltonen , T , Mehtälä , P , Orava , R , Mäki , T , Saarikko , H , Österberg , K & CDF Collaboration 2009 , ' Observation of New Charmless Decays of Bottom Hadrons ' Physical Review Letters , vol 103 , no. 3 , pp. 031801 . DOI: 10.1103/PhysRevLett.103.031801 en
dc.identifier.issn 0031-9007
dc.identifier.other PURE: 9951149
dc.identifier.other PURE UUID: 7ce7939d-73dd-4ef4-b7b1-85c7b7fb155f
dc.identifier.other ArXiv: http://arxiv.org/abs/0812.4271v1
dc.identifier.uri http://hdl.handle.net/10138/24481
dc.description.abstract We search for new charmless decays of neutral b-hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 1 fb-1 of integrated luminosity, we report the first observation of the B0s->K-pi+ decay, with a significance of 8.2 sigma, and measure BR(B0s->K-pi+)= (5.0+-0.7(stat)+-0.8(syst))*10^{-6}. We also report the first observation of charmless b-baryon decays in the channels Lambda_b -> p pi and Lambda_b -> pK with significances of 6.0 sigma and 11.5 sigma respectively, and we measure BR(Lambda_b->p pi-) = (3.5+-0.6(stat)+-0.9(syst))*10^{-6} and BR(Lambda_b->p K-) = (5.6+-0.8(stat)+-1.5(syst))*10^{-6}. No evidence is found for the decays B0->K+K- and B0s -> pi+pi-, and we set an improved upper limit BR(B0s -> pi+pi-) K+pi-)$ as a reference. fi
dc.format.extent 8
dc.language.iso eng
dc.publisher American Physical Society
dc.relation.ispartof Physical Review Letters
dc.relation.uri http://prl.aps.org/pdf/PRL/v103/i3/e031801
dc.rights en
dc.subject 114 Physical sciences en
dc.subject hep-ex en
dc.subject hep-ph en
dc.title Observation of New Charmless Decays of Bottom Hadrons en
dc.type A1 Refereed journal article
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevLett.103.031801
dc.type.uri info:eu-repo/semantics/article
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