Sector of the $2^{++}$ mesons: observation of the tensor glueball
| dc.creator | Anisovich, V. V. | |
| dc.creator | Matveev, M. A. | |
| dc.creator | Nyiri, J. | |
| dc.creator | Sarantsev, A. V. | |
| dc.date | 2005-06-14 | |
| dc.date.accessioned | 2026-07-07T10:44:19Z | |
| dc.date.available | 2026-07-07T10:44:19Z | |
| dc.description | Data of the Crystal Barrel and L3 collaborations clarified essentially the situation in the $2^{++}$ sector in the mass region up to 2400 MeV, demonstrating the linearity of $(n,M^2)$ trajectories, where $n$ is the radial quantum number of a quark-antiquark state with mass $M$. We discuss these data and show that there exists a superfluous state for the $(n,M^2)$ trajectories: a broad resonance $f_2(2000)$. We pay special attention to the reactions $p\bar p\toππ,ηη,ηη'$ in the mass region 1990--2400 MeV where, together with $f_2(2000)$, four relatively narrow resonances are seen: $f_2(1920)$, $f_2(2020)$, $f_2(2240)$, $f_2(2300)$. We analyse the branching ratios of all these resonances and show that only the decay couplings of the broad state $f_2(2000)\toπ^0π^0,ηη, ηη'$ satisfy relations inherent in the glueball decay. | |
| dc.description | 44 pages, 31 Postscript figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0506133 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0506133 | |
| dc.identifier | Int.J.Mod.Phys.A20:6327-6364,2005 | |
| dc.identifier | doi:10.1142/S0217751X05028429 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/182553 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Sector of the $2^{++}$ mesons: observation of the tensor glueball | |
| dc.type | text |