Hidden Structure in a Lagrangian for Hyperfine Splitting of the Heavy Baryons

Masayasu Harada, Asif Qamar, Francesco Sannino, Joseph Schechter, Herbert Weigel

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We investigate the hyperfine splitting of the heavy baryons in the bound-state approach. We start with an ordinary relativistic Lagrangian which has been extensively used to discuss finite mass corrections to the heavy limit predictions. It turns out that the dominant contribution arises from terms which do not manifestly break the heavy spin symmetry. The actual heavy spin violating terms are uncovered by carefully performing a 1/M expansion of this Lagrangian.
TidsskriftPhysics Letters B: Particle Physics, Nuclear Physics and Cosmology
Udgave nummer1-4
Sider (fra-til)329-334
StatusUdgivet - jan. 1997
Udgivet eksterntJa

Bibliografisk note

Many typographical errors due to an inadvertent macro command are corrected. 10 pages (LaTeX), 2 PostScript figures


  • hep-ph


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