Heavy meson hyperfine splitting: a complete $1/m_Q$ calculation
| dc.creator | Di Bartolomeo, Nicola | |
| dc.date | 1995-05-23 | |
| dc.date.accessioned | 2026-07-07T03:57:38Z | |
| dc.date.available | 2026-07-07T03:57:38Z | |
| dc.description | We compute the chiral corrections to the hyperfine splittings $Δ_D=(m_{D^*_s}-m_{D_s})-(m_{D^{*+}}-m_{D^+})$ and $Δ_B=(m_{B^*_s}-m_{B_s})-(m_{B^{*0}}-m_{B^0})$ arising from one-loop chiral corrections, working in a framework of an effective chiral lagrangian incorporating chiral, heavy flavour and spin symmetric terms and first order breaking terms. Among these terms, those responsible for the spin-breaking difference between the couplings $g_{P^* P^* π}$ and $g_{P^* P π}$ are evaluated in the QCD sum rules approach. Their contribution to $Δ_D$ and to $Δ_B$ appears to cancel previously estimated large chiral effects, giving an estimate in agreement with the experimental data. | |
| dc.description | 5 pages, latex, no figures. To appear in the Proceedings of the XXXth Rencontres de Moriond, Les Arcs, France, March 1995 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9505363 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9505363 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/45510 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Heavy meson hyperfine splitting: a complete $1/m_Q$ calculation | |
| dc.type | text |