Using data from p (p) over bar collisions at root s = 1.96 TeV recorded by the CDF II detector at the Fermilab Tevatron, we present improved measurements of the masses and first measurements of natural widths of the four bottom baryon resonance states Sigma(+)(b), Sigma*(+)(b) and Sigma(-)(b), Sigma*(-)(b). These states are fully reconstructed in their decay modes to Lambda(0)(b)pi(+/-) where Lambda(0)(b) -> Lambda(+)(c)pi(-) with Lambda(+)(c) -> pK(-) pi(+). The analysis is based on a data sample corresponding to an integrated luminosity of 6.0 fb(-1) collected by an online event selection based on tracks displaced from the p (p) over bar interaction point.
|Titolo:||Measurement of the masses and widths of the bottom baryons Sigma(+/-)(b) and Sigma*(+/-therefore)(b)|
|Data di pubblicazione:||2012|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1103/PhysRevD.85.092011|
|Appare nelle tipologie:||1.1 Articolo in rivista|