Evidence for a bottom baryon resonance Λ*0b in CDF data
View/ Open
Full record
Show full item recordAuthor
Aaltonen, Timo Antero; Amerio, Silvia; Amidei, Dante; Anastassov, Anton; Annovi, Alberto; Antos, Jaroslav; Apollinari, Giorgio; Appel, Jeffrey A.; Arisawa, Tetsuo; Artikov, A.; Asaadi, Jonathan Abraham; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, Gervasio; Palencia Cortezón, José Enrique; Ruiz Jimeno, Alberto


Date
2013-10Derechos
© 2013 American Physical Society
Publicado en
Physical review. D, Particles, fields, gravitation, and cosmology, vol. 88, num. 7, art. num. 071101(R), (2013)
Publisher
American Physical Society
Enlace a la publicación
Abstract:
Using data from proton-antiproton collisions at s√=1.96 TeV recorded by the CDF II detector at the Fermilab Tevatron, evidence for the excited resonance state Λ*0b is presented in its Λ0bπ−π+ decay followed by the Λ0b→Λ+cπ− and Λ+c→pK−π+ decays. The analysis is based on a data sample corresponding to an integrated luminosity of 9.6 fb−1 collected by an online event selection based on charged-particle tracks displaced from the proton-antiproton interaction point. The significance of the observed signal is 3.5σ. The mass of the observed state is found to be 5919.22±0.76 MeV/c2 in agreement with similar findings in proton-proton collision experiments.
Collections to which it belong
- D15 Artículos [711]
- D52 Artículos [1056]