Using data from proton-antiproton collisions at âs=1.96 TeV recorded by the CDF II detector at the Fermilab Tevatron, evidence for the excited resonance state Îb*0 is presented in its Îb0Ï-Ï+decay followed by the Îb0âÎ c+Ï-and Îc+âpK-Ï+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 3.5Ï. 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. © 2013 American Physical Society.
Evidence for a bottom baryon resonance Lambda(b)*(0) in CDF data
Manca, G.;
2013-01-01
Abstract
Using data from proton-antiproton collisions at âs=1.96 TeV recorded by the CDF II detector at the Fermilab Tevatron, evidence for the excited resonance state Îb*0 is presented in its Îb0Ï-Ï+decay followed by the Îb0âÎ c+Ï-and Îc+âpK-Ï+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 3.5Ï. 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. © 2013 American Physical Society.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.