Axial couplings in heavy hadron chiral perturbation theory at the next-to-leading order
We present results for axial-current matrix elements between various heavy-meson and baryon states to the next-to- leading order in heavy hadron chiral perturbation theory in the p-regime. When compared with data from lattice simulations or experiments, these results can be used to determine the axial couplings in the chiral Lagrangian. Our calculation is performed in partially-quenched chiral perturbation theory for both SU(4|2) and SU(6|3) cases. We incorporate finite-size effects arising from a single Goldstone meson wrapping around the spatial volume. Results for full QCD with two and three flavours can be obtained straightforwardly by taking the sea-quark masses to be equal to the valence-quark masses. We also present one-loop results relevant to the heavy hadron strong-decay amplitudes involving final-state Goldstone bosons.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1029186
- Report Number(s):
- JLAB-THY-11-1412; DOE/OR/23177-1748; arXiv:1108.5594; PRVDAQ; TRN: US1105656
- Journal Information:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 84, Issue 9; ISSN 1550-7998
- Country of Publication:
- United States
- Language:
- English
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