QCD Inequalities, Large $N_C$ and $ππ$ Scattering Lengths
| dc.creator | Nussinov, S. | |
| dc.date | 2000-10-26 | |
| dc.date.accessioned | 2026-07-07T04:10:49Z | |
| dc.date.available | 2026-07-07T04:10:49Z | |
| dc.description | In this short note we show that (I) in a QCD-like theory with four (rather than two) degenerate flavors $ud u'd'$, the $ππ'$ scattering length is positive (attractive); and (II) in QCD with only two (u,d) degenerate flavors the I=2 (say, $π^+π^+$ hadronic) scattering length is, in the large $N_C$ limit, repulsive. $π(π')$ are the lowest physical states coupling to $J^p = \bar{u}(x)γ_5d(x)$ and $J^{p'} = \bar{u}'(x)γ_5d'(x),$ respectively. | |
| dc.description | 8 pages, latex with one postscript figure | |
| dc.identifier | https://arxiv.org/abs/hep-th/0010250 | |
| dc.identifier | http://arxiv.org/abs/hep-th/0010250 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/50347 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | QCD Inequalities, Large $N_C$ and $ππ$ Scattering Lengths | |
| dc.type | text |