The chiral transitions in heavy-light mesons

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dc.creatorBadalian, A. M.
dc.creatorSimonov, Yu. A.
dc.creatorTrusov, M. A.
dc.date2007-12-23
dc.date.accessioned2026-07-07T11:39:40Z
dc.date.available2026-07-07T11:39:40Z
dc.descriptionThe mass shifts of the $P$-wave $D_s$ and $B_s$ mesons due to coupling to $DK$, $D^*K$ and $BK$, $B^*K$ channels are studied using the chiral quark-pion Lagrangian without fitting parameters. The strong mass shifts down $\sim 140$ MeV and $\sim 100$ MeV for $D^*_s(0^+)$ and $D_s(1^{+'})$ and $\sim 100$ MeV for $B^*_s(0^+)$ and $B_s(1^{+'})$ are calculated. Two factors are essential for large mass shifts: strong coupling of the $0^+$ and $1^{+'}$ states to the $S$-wave decay channel, containing a Nambu-Goldstone meson, and the chiral flip transitions due to the bispinor structure of both heavy-light mesons. The masses $M(B^*_s(0^+))=5695(10)$ MeV and $M(B_s(1^{+'}))=5730(15)$ MeV,very close to $M(B(0^+))$ and $M(B(1^{+'}))$, are predicted. Experimental limit on the width $Γ(D_{s1}(2536))<2.3$ MeV puts strong restrictions on admittable mixing angle between the $1^+$ and $1^{+'}$ states, $|ϕ|<6^{\circ}$, which corresponds to the mixing angle $θ$ between the $^3P_1$ and $^1P_1$ states, $29^{\circ}<θ< 41^{\circ}$.
dc.description30 pages, 11 tables, 7 figures; ReVTeX 4; submitted to Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0712.3943
dc.identifierhttp://arxiv.org/abs/0712.3943
dc.identifierPhys.Rev.D77:074017,2008
dc.identifierdoi:10.1103/PhysRevD.77.074017
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200002
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe chiral transitions in heavy-light mesons
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