Even- and Odd-Parity Charmed Meson Masses in Heavy Hadron Chiral Perturbation Theory

Details Even- and Odd-Parity Charmed Meson Masses in Heavy Hadron Chiral Perturbation Theory Even- and Odd-Parity Charmed Meson Masses in Heavy Hadron Chiral Perturbation Theory

2005-03-14

arxiv.org/abs/hep-ph/0503134v2

Phys.Rev. D72 (2005) 034006

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 2 .ps figures, version accepted for publication in PRD, contains new improved fits to data, minor errors corrected

Scientific paper

10.1103/PhysRevD.72.034006

We derive mass formulae for the ground state, J^P = 0^- and 1^-, and first excited even-parity, J^P = 0^+ and 1^+, charmed mesons including one loop chiral corrections and O(1/m_c) counterterms in heavy hadron chiral perturbation theory. We show that including these counterterms is critical for fitting the current data. We find that certain parameter relations in the parity doubling model are not renormalized at one loop, providing a natural explanation for the equality of the hyperfine splittings of ground state and excited doublets.

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