Chiral multiplets of excited mesons
| dc.creator | Glozman, L. Ya. | |
| dc.date | 2003-12-29 | |
| dc.date | 2004-02-05 | |
| dc.date.accessioned | 2026-07-07T10:29:02Z | |
| dc.date.available | 2026-07-07T10:29:02Z | |
| dc.description | It is shown that experimental meson states with spins J=0,1,2,3 in the energy range 1.9 - 2.4 GeV obtained in recent partial wave analysis of proton-antiproton annihilation at LEAR remarkably confirm all predictions of chiral symmetry restoration. Classification of excited $\bar q q$ mesons according to the representations of chiral $U(2)_L \times U(2)_R$ group is performed. There are two important predictions of chiral symmetry restoration in highly excited mesons: (i) physical states must fill out approximately degenerate parity-chiral multiplets; (ii) some of the physical states with the given $I,J^{PC}$ are members of one parity-chiral multiplet, while the other states with the same $I,J^{PC}$ are members of the other parity-chiral multiplet. For example, while some of the excited $ρ(1,1^{--})$ states are systematically degenerate with $a_1(1,1^{++})$ states forming (0,1)+(1,0) chiral multiplets, the other excited $ρ(1,1^{--})$ states are degenerate with $h_1(0,1^{+-})$ states ((1/2,1/2) chiral multiplets). Hence, one of the predictions of chiral symmetry restoration is that the combined amount of $a_1(1,1^{++})$ and $h_1(0,1^{+-})$ states must coincide with the amount of $ρ(1,1^{--})$ states in the chirally restored regime. It is shown that the same rule applies (and experimentally confirmed) to many other meson states. | |
| dc.description | 14 pages, discussion and conclusion section is largely extended | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0312354 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0312354 | |
| dc.identifier | Phys.Lett.B587:69-77,2004 | |
| dc.identifier | doi:10.1016/j.physletb.2004.02.066 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/177659 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.subject | High Energy Physics - Lattice | |
| dc.subject | Nuclear Theory | |
| dc.title | Chiral multiplets of excited mesons | |
| dc.type | text |