Measurement of the masses and widths of the bottom baryons Σb[superscript ±] and Σb*[superscript ±]
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Aaltonen-2012-Measurement of the masses.pdf
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Author(s)
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Paus, Christoph M. E.
Date Issued
May 2012
Journal
Physical Review D
Publisher
American Physical Society
Citation
T. Aaltonen et al. (CDF Collaboration). "Measurement of the masses and widths of the bottom baryons Σb[superscript ±] and Σb*[superscript ±]" Physical Review D 85, 092011 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
Using data from pp̅ collisions at √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 Σ[subscript b][superscript +], Σ[subscript b][superscript *+] and Σ[subscript b][superscript -], Σ[subscript b][superscript *-]. These states are fully reconstructed in their decay modes to Λb0π± where Λ[subscript b][superscript 0]→Λ[subscript c][superscript +]π[superscript -] with Λ[subscript c][superscript +]→pK[superscript -]π[superscript +]. The analysis is based on a data sample corresponding to an integrated luminosity of 6.0 fb[superscript -1] collected by an online event selection based on tracks displaced from the pp̅ interaction point.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.85.092011
