Parity odd bubbles in hot QCD
| dc.creator | Kharzeev, D. | |
| dc.creator | Pisarski, R. D. | |
| dc.creator | Tytgat, M. H. G. | |
| dc.date | 1998-08-19 | |
| dc.date.accessioned | 2026-07-07T04:04:34Z | |
| dc.date.available | 2026-07-07T04:04:34Z | |
| dc.description | We consider the topological susceptibility for an SU(N) gauge theory in the limit of a large number of colors, $N \to \infty$. At nonzero temperature, the behavior of the topological susceptibility depends upon the order of the deconfining phase transition. The most interesting possibility is if the deconfining transition, at $T=T_d$, is of second order. Then we argue that Witten's relation implies that the topological susceptibility vanishes in a calculable fashion at $T_d$. As noted by Witten, this implies that for sufficiently light quark masses, metastable states which act like regions of nonzero $θ$ --- parity odd bubbles --- can arise at temperatures just below $T_d$. Experimentally, parity odd bubbles have dramatic signatures: the $η'$ meson, and especially the $η$ meson, become light, and are copiously produced. Further, in parity odd bubbles, processes which are normally forbidden, such as $η\to π^0 π^0$, are allowed. The most direct way to detect parity violation is by measuring a parity odd global asymmetry for charged pions, which we define. | |
| dc.description | 9 pages, LaTeX, requires sprocl.sty, to appear in the Proceedings of the 3rd workshop on "Continuous Advances in QCD", Minneapolis, 16-19 April, 1998 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9808366 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9808366 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/48147 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Parity odd bubbles in hot QCD | |
| dc.type | text |