Publicação
Transverse target spin asymmetries in exclusive $\rho^0$ muoproduction
| dc.contributor.author | COMPASS collaboration (213 authors) | |
| dc.contributor.author | Bordalo, P | |
| dc.contributor.author | Franco, C | |
| dc.contributor.author | Nunes, A.S | |
| dc.contributor.author | Quaresma, M | |
| dc.contributor.author | Quintans, C | |
| dc.contributor.author | Ramos, S | |
| dc.contributor.author | Silva, L | |
| dc.contributor.author | Stolarski, M | |
| dc.date.accessioned | 2019-02-03T23:31:21Z | |
| dc.date.available | 2019-02-03T23:31:21Z | |
| dc.date.issued | 2014-04-04 | |
| dc.date.updated | 2019-02-03T23:31:20Z | |
| dc.description.abstract | Exclusive production of $\rho^0$ mesons was studied at the COMPASS experiment by scattering 160 GeV/$c$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured as a function of $Q^2$, $x_{Bj}$, or $p_{T}^{2}$. The $\sin \phi_S$ asymmetry is found to be $-0.019 \pm 0.008(stat.) \pm 0.003(syst.)$. All other asymmetries are also found to be of small magnitude and consistent with zero within experimental uncertainties. Very recent calculations using a GPD-based model agree well with the present results. The data is interpreted as evidence for the existence of chiral-odd, transverse generalized parton distributions. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Lett. B731 (2014) 19-26; DOI 10.1016/j.physletb.2014.02.005 | |
| dc.identifier.uri | http://dx.doi.org/10.1016/j.physletb.2014.02.005 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26481 | |
| dc.language.iso | eng | |
| dc.title | Transverse target spin asymmetries in exclusive $\rho^0$ muoproduction | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |