B Decays as Spectroscope for Charmed Four-quark States
| dc.creator | Cheng, Hai-Yang | |
| dc.creator | Hou, Wei-Shu | |
| dc.date | 2003-05-05 | |
| dc.date.accessioned | 2026-07-07T10:28:47Z | |
| dc.date.available | 2026-07-07T10:28:47Z | |
| dc.description | The $D_s(2320)$ state recently observed by BaBar in the $D_s^+π^0$ channel may be the first of a host of $cq\bar q\bar q$ four-quark states. We give a phenomenological account of the masses and decay modes. The isosinglet $D_s(2320)$ state is the only narrow one, dominated by the observed isospin violating decay and less than $\sim$ 100 keV in width. All other states are expected to decay hadronically. Notable resonances are in doubly charged $D_s^+π^+$, $D^+K^+$, wrong pairing $D^+K^-$, and also $D_s^+K^-$, $Dη$ channels. We propose B decays as searching ground for such 4-quark states, which recoil against $\bar D^{(*)}$ meson from B decay, or $π^+$ $\bar D^{(*)}$, $\bar K$ mesons from $\bar B$ decay. Exotic $qc\bar c\bar q$ charmonia could also be produced, and may be behind the slow $J/ψ$ bump in inclusive $B\to J/ψ+X$ decay. | |
| dc.description | 6 pages and 2 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0305038 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0305038 | |
| dc.identifier | Phys.Lett.B566:193-200,2003 | |
| dc.identifier | doi:10.1016/S0370-2693(03)00834-7 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/177574 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | B Decays as Spectroscope for Charmed Four-quark States | |
| dc.type | text |