Mixing angle between $^3P_1$ and $^1P_1$ in HQET

Details Mixing angle between $^3P_1$ and $^1P_1$ in HQET Mixing angle between $^3P_1$ and $^1P_1$ in HQET

2010-01-24

arxiv.org/abs/1001.4248v2

Prog.Theor.Phys.124:285-292,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 1 table

Scientific paper

10.1143/PTP.124.285

Some claim that there are two independent mixing angles ($\theta = 35.3^\circ$, $-54.7^\circ$) between $^3P_1$ and $^1P_1$ states of heavy-light mesons in heavy quark symmetric limit, and others claim there is only one ($\theta = 35.3^\circ$). We clarify the difference between these two and suggest which should be adopted. General arguments on the mixing angle between $^3L_L$ and $^1L_L$ of heavy-light mesons are given in HQET and a general relation is derived in heavy quark mass limit as well as that including the first order correction in $1/m_Q$.

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