Measurement of the masses and widths of the bottom baryons Sigma_b+- and Sigma_b*+-

CDF Collaboration: T. Aaltonen; et al

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Measurement of the masses and widths of the bottom baryons Sigma_b+- and Sigma_b*+-

CDF Collaboration: T. Aaltonen, et al

High Energy Physics - Experiment · Submitted 13 Dec 2011

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim Using data from proton - anti-proton collisions at the energy Ecm = 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*-.

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arXiv ID1112.2808 (version 2)

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CitationCDF Collaboration: T. Aaltonen, et al. "Measurement of the masses and widths of the bottom baryons Sigma_b+- and Sigma_b*+-." arXiv:1112.2808 (2011). https://pith.science/paper/RYRGDBQX

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Using data from proton - anti-proton collisions at the energy Ecm = 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_b pi+-, where Lambda_b -->Lambda_c+ pi- with Lambda_c+ -->prot K- pi+. The analysis is based on a data sample corresponding to an integrated luminosity of 6.0/fb collected by an online event selection based on tracks displaced from the proton - anti-proton interaction point.

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#	sentence	role	the authors' own work	states the main conclusion	strength
s0	Using data from proton - anti-proton collisions at the energy Ecm = 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-.	contribution 0.96	0.96	0.64	asserted 1.00
s1	These states are fully reconstructed in their decay modes to Lambda_b pi+-, where Lambda_b -->Lambda_c+ pi- with Lambda_c+ -->prot K- pi+.	method 0.95	0.71	0.05	asserted 1.00
s2	The analysis is based on a data sample corresponding to an integrated luminosity of 6.0/fb collected by an online event selection based on tracks displaced from the proton - anti-proton interaction point.	method 1.00	0.80	0.03	asserted 0.99

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Original abstract

Using data from proton - anti-proton collisions at the energy Ecm = 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_b pi+-, where Lambda_b -->Lambda_c+ pi- with Lambda_c+ -->prot K- pi+. The analysis is based on a data sample corresponding to an integrated luminosity of 6.0/fb collected by an online event selection based on tracks displaced from the proton - anti-proton interaction point.

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12 arXiv papers cite this in 20 sentences

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Uses its data or values 5 papers

The experimental values of the masses are $M_Σ_c^++=(2454.03±0.18) MeV$, $M_Σ_c^+=(2452.9±0.4) MeV$, $M_Σ_c^0=(2453.76±0.18) MeV$, $M_Σ_b^+=(5807.8±2.7) MeV$ and $M_Σ_b^-=(5815.2±2.0) MeV$ from the Particle Data Group [ref] , the average values are $M_Σ_c=2.454 GeV$ and $M_Σ_b=5.812 GeV$, respectively, which are consistent with the new experimental data from the CDF collaboration [ref] .

Analysis of the $\Sigma_Q$ baryons in the nuclear matter with the QCD sum rules · Numerical results and discussions · 1.00
The $_b^(*)±$ states were found by the CDF collaboration [ref] .

Method of Studying $\Lambda_b^0$ decays with one missing particle · Introduction · 0.87
While the CDF collaboration has measured the masses and widths of the $Σ^(∗)_b$ [ref] , it has not determined their production rates.

Heavy baryons as polarimeters at colliders · Bottom and charmed baryons · 0.85

Compares with it 2 papers

From the table, it is seen that our predictions are in good agreement with the measurements [ref] and the other model predictions [ref] .

Charm-strange baryon strong decays in a chiral quark model · $Ξ_c^*(2645)$ · 0.92
These values are in good agreement with those measured by the collaboration [ref] , with precision improved by a factor of 5.

Observation of two resonances in the $\Lambda_b^0 \pi^\pm$ systems and precise measurement of $\Sigma_b^\pm$ and $\Sigma_b^{*\pm}$ properties · Introduction · 1.00

Cites it as background 2 papers

It should be noted that baryons can also be produced in the decay of heavier baryons [ref] , where the polarisation is partially diluted [ref] .

Measurements of the Lambda_b0 -> J/psi Lambda decay amplitudes and the Lambda_b0 polarisation in pp collisions at sqrt(s) = 7 TeV · Introduction · 0.82
[ref] in context of mass spectrum, lifetimes and decay rates have been made in resent years.

Axial-Vector Emitting Weak Nonleptonic Deacys of $\Omega_c^0$ Baryon · INTRODUCTION · 0.95

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