Structure of Mass Gap between Two Spin Multiplets
| dc.creator | Matsuki, Takayuki | |
| dc.creator | Morii, Toshiyuki | |
| dc.creator | Sudoh, Kazutaka | |
| dc.date | 2007-10-01 | |
| dc.date | 2007-12-08 | |
| dc.date.accessioned | 2026-07-07T11:19:41Z | |
| dc.date.available | 2026-07-07T11:19:41Z | |
| dc.description | Studying our semirelativistic potential model and the numerical results, which succeeds in predicting and reproducing recently discovered higher resonances of $D$, $D_s$, $B$, and $B_s$, we find a simple expression for the mass gap between two spin multiplets of heavy-light mesons, $(0^-,1^-)$ and $(0^+,1^+)$. The mass gap between chiral partners defined by $ΔM=M(0^+)-M(0^-)$ and/or $M(1^+)-M(1^-)$ is given by $ΔM=M(0^+)-M(0^-)=M(1^+)-M(1^-)\approx Λ_{\rm Q}-m_q$ in the limit of heavy quark symmetry, and including $1/m_Q$ corrections, we have $ΔM\approx Λ_{\rm Q}-m_q+(1.28\times 10^{5}+4.26\times 10^{2}\cdot m_q)/m_Q$ with $Λ_{\rm Q}\approx 300$ MeV, a light quark mass $m_q$, and a heavy quark mass $m_Q$. This equation holds both for $D$ and $D_s$ heavy mesons. Our model calculations for the $B$ and $B_s$ also follow this formula. | |
| dc.description | 6 pages, 2 figures | |
| dc.identifier | https://arxiv.org/abs/0710.0325 | |
| dc.identifier | http://arxiv.org/abs/0710.0325 | |
| dc.identifier | Phys.Lett.B659:593-597,2008 | |
| dc.identifier | doi:10.1016/j.physletb.2007.11.065 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/193769 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Structure of Mass Gap between Two Spin Multiplets | |
| dc.type | text |