Lowest-lying even-parity (B)over-bars mesons: heavy-quark spin-flavor symmetry, chiral dynamics, and constituent quark-model bare masses

被引：0

作者：

Albaladejo, M. ^{[1
]}

Fernandez-Soler, P. ^{[1
]}

Nieves, J. ^{[1
]}

Ortega, P. G. ^{[1
]}

机构：

[1] Univ Valencia, Inst Invest Paterna, Ctr Mixto CSIC, Inst Fis Corpuscular IFIC, Aptd 22085, Valencia 46071, Spain

来源：

EUROPEAN PHYSICAL JOURNAL C | 2017年 / 77卷 / 03期

关键词：

PERTURBATION-THEORY; ELEMENTARY PARTICLE; LATTICE QCD; S MESONS; STATES; SCATTERING; SPECTROSCOPY; RESONANCES; DEPENDENCE; SPECTRUM;

D O I：

10.1140/epjc/s10052-017-4735-7

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The discovery of the D*(s0)(2317) and D-s1(2460) resonances in the charmed-strange meson spectra revealed that formerly successful constituent quark models lose predictability in the vicinity of two-meson thresholds. The emergence of non-negligible effects due to meson loops requires an explicit evaluation of the interplay between Q (q) over bar and (Q (q) over bar)(q (q) over bar) Fock components. In contrast to the c (s) over bar sector, there is no experimental evidence of J(P) = 0(+), 1(+) bottom-strange states yet. Motivated by recent lattice studies, in this work the heavy-quark partners of the D*(s0)(2317) and D-s1(2460) states are analyzed within a heavy meson chiral unitary scheme. As a novelty, the coupling between the constituent quark-model P-wave (B) over bar (s) scalar and axial mesons and the (B) over bar (()*()) K channels is incorporated employing an effective interaction, consistent with heavy-quark spin symmetry, constrained by the lattice energy levels.

引用

页数：9

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