Publications
Publication Information
| Title | Deep exclusive electroproduction of $p^0$ at high $Q^2$ in the quark valence regime |
| Authors | Mongi Dlamini, Bishnu Karki, Salina Ali, P.-J. Lin, Frederic Georges, Ho San Ko, Norman Israel, Mohamed Nuhman Hashir Rashad, A. Stefanko |
| JLAB number | JLAB-PHY-21-3308 |
| LANL number | arXiv:2011.11125 |
| Other number | DOE/OR/23177-5114 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physical Review Letters Volume 127 Page(s) 152301 Refereed | |
| Publication Abstract: | We report measurements of the exclusive neutral pion electroproduction cross section off protons at large values of $x_B$ (0.36, 0.48 and 0.60) and $Q^2$ (3.1 to 8.4 GeV$^2$) obtained from Jefferson Lab Hall A experiment E12-06-014. The corresponding structure functions $d\sigma_L/dt+\epsilon d\sigma_T/dt$, $d\sigma_{TT}/dt$, $d\sigma_{LT}/dt$ and $d\sigma_{LT'}/dt$ are extracted as a function of the proton momentum transfer $t-t_{min}$. The results suggest the amplitude for transversely polarized virtual photons continues to dominate the cross-section throughout this kinematic range. The data are well described by calculations based on transversity Generalized Parton Distributions coupled to a helicity flip Distribution Amplitude of the pion, thus providing a unique way to probe the structure of the nucleon. |
| Experiment Numbers: | E12-06-114 |
| Group: | Hall A |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevLett.127.152301 |
| Accepted Manuscript: | PhysRevLett.127.152301.pdf |
| Supporting Documents: | |
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