On the $A$ dependence of $R = σ_L/σ_T$ and the $Q^2$ dependence of Shadowing
| dc.creator | Milana, J. | |
| dc.date | 1993-09-27 | |
| dc.date.accessioned | 2026-07-07T11:14:28Z | |
| dc.date.available | 2026-07-07T11:14:28Z | |
| dc.description | A higher--twist nuclear enhancement of $R = σ_L/σ_T$, as might be expected to arise due to fermi motion and whose magnitude is within the error-bars of recent experiment, is shown to lead to a monotonic {\it decrease} in the ratio of nuclear vs. nucleon cross--sections at small Bjorken $x$ for {\it increasing} $Q^2$. This effect at small $x$, comparable in magnitude to those reported for shadowing, is driven mainly by kinematic factors and essentially vanishes for $x > .1$. Its unusual $Q^2$ dependence rather complicates the unravelling from present data in the shadowing region the corresponding dependence in $Q^2$ of the nuclear structure functions, $F_2^{A}(x,Q^2)$. | |
| dc.description | 10 pages + 2 Figures, DOE/ER/40762--019, UMPP \#94--039 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9309328 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9309328 | |
| dc.identifier | Phys.Rev.C49:2820-2823,1994 | |
| dc.identifier | doi:10.1103/PhysRevC.49.2820 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/192079 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | On the $A$ dependence of $R = σ_L/σ_T$ and the $Q^2$ dependence of Shadowing | |
| dc.type | text |