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High Energy Physics - Lattice

arXiv:1606.01650 (hep-lat)
[Submitted on 6 Jun 2016]

Title:Axial charges of hyperons and charmed baryons using $N_f=2+1+1$ twisted mass fermions

Authors:C. Alexandrou (Univ. of Cyprus & The Cyprus Inst.), K. Hadjiyiannakou (Univ. of Cyprus & The Cyprus Inst.), Ch. Kallidonis (The Cyprus Inst.)
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Abstract:The axial couplings of the low lying baryons are evaluated using a total of five ensembles of dynamical twisted mass fermion gauge configurations. The simulations are performed using the Iwasaki gauge action and two degenerate flavors of light quarks, and a strange and a charm quark fixed to approximately their physical values at two values of the coupling constant. The lattice spacings, determined using the nucleon mass, are $a=0.082$ fm and $a=0.065$ fm and the simulations cover a pion mass in the range of about 210 MeV to 430 MeV. We study the dependence of the axial couplings on the pion mass in the range of about 210 MeV to 430 MeV as well as the $SU(3)$ breaking effects as we decrease the light quark mass towards its physical value.
Comments: 34 pages, 17 figures
Subjects: High Energy Physics - Lattice (hep-lat); High Energy Physics - Phenomenology (hep-ph); Nuclear Theory (nucl-th)
Cite as: arXiv:1606.01650 [hep-lat]
  (or arXiv:1606.01650v1 [hep-lat] for this version)
  https://doi.org/10.48550/arXiv.1606.01650
Journal reference: Phys. Rev. D 94, 034502 (2016)
Related DOI: https://doi.org/10.1103/PhysRevD.94.034502

Submission history

From: Constantia Alexandrou [view email]
[v1] Mon, 6 Jun 2016 08:00:58 UTC (6,628 KB)
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