Charmed bottom baryon spectroscopy from lattice QCD
Name
PhysRevD.90.094507.pdf
Size
1.54 MB
Format
Adobe PDF
Checksum (MD5)
570e25b616b978d8f86ce024a9d0f7d3
Author(s)
Brown, Zachary S.
Detmold, William
Meinel, Stefan
Orginos, Kostas
Date Issued
November 2014
Journal
Physical Review D
Publisher
American Physical Society
Citation
Brown, Zachary S., William Detmold, Stefan Meinel, and Kostas Orginos. "Charmed bottom baryon spectroscopy from lattice QCD." Phys. Rev. D 90, 094507 (November 2014). © 2014 American Physical Society
Version
Final published version
Abstract
We calculate the masses of baryons containing one, two, or three heavy quarks using lattice QCD. We consider all possible combinations of charm and bottom quarks, and compute a total of 36 different states with J[superscript P] = [1+ over 2] and J[superscript P] = [3+ over 2]. We use domain-wall fermions for the up, down, and strange quarks, a relativistic heavy-quark action for the charm quarks, and nonrelativistic QCD for the bottom quarks. Our analysis includes results from two different lattice spacings and seven different pion masses. We perform extrapolations of the baryon masses to the continuum limit and to the physical pion mass using SU(4|2) heavy-hadron chiral perturbation theory including 1/m[subscript Q] and finite-volume effects. For the 14 singly heavy baryons that have already been observed, our results agree with the experimental values within the uncertainties. We compare our predictions for the hitherto unobserved states with other lattice calculations and quark-model studies.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
Terms of Use
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Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevD.90.094507
