What question did this study set out to answer?

This research aims to calculate mass spectra and strong decay widths of open charm-strange mesons using relativistic formalism.

May 11, 2026Open Access

Mass spectroscopy and strong decays of open charm-strange mesons using relativistic Dirac formalism

Key Points

This research aims to calculate mass spectra and strong decay widths of open charm-strange mesons using relativistic formalism.
Calculations of mass spectra for ground, radial, and orbital excitations using relativistic Dirac framework.
Utilization of an effective Lagrangian approach based on heavy quark and chiral symmetries to compute decay widths.
Assignment of spin-parity quantum numbers to newly observed charm-strange states based on predicted mass values.
Identified $$D_{sJ}(2700)$$ as the $$2^3S_1$$ state, $$D_{s0}(2590)$$ as $$2^1S_0$$, and other mesons aligned with theoretical predictions.
Calculated partial widths and branching ratios for higher excited states to enable quantum number classifications.

Abstract

Abstract The mass spectra of charm-strange mesons including ground, radial and orbital excitations have been calculated within a relativistic Dirac framework. The predicted masses of the first orbital excited state 1 P exhibits excellent agreement with values reported by the PDG. Utilizing these mass predictions and an effective Lagrangian approach based on heavy quark and chiral symmetries, we have computed the OZI allowed two body strong decay widths of higher excited state candidates of charm-strange sector. The resulting partial widths and branching ratios enable the assignment of spin-parity quantum numbers to several newly observed charm-strange states. In particular, we identify Dₒ₉ (2700) D sJ (2700) as the 2³S₁ 2 3 S 1, Dₒ₀ (2590) D s 0 (2590) as the 2¹S₀ 2 1 S 0, Dₒ₉ (2860) D sJ (2860) as the 1³D₃ 1 3 D 3, Dₒ₁ (2860) D s 1 (2860) as the 1³D₁ 1 3 D 1 and Dₒ₉ (3040) D sJ (3040) as the 2¹P₁ 2 1 P 1 states. The effective coupling constants gT

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Cite This Study

Pandya et al. (Sat,) studied this question.

synapsesocial.com/papers/6a01723a3a9f334c28272691 https://doi.org/https://doi.org/10.1140/epjc/s10052-026-15725-w

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