TY  - JOUR
AB  - Exclusive production of $\rho^0$ mesons was studied at the COMPASS experimentby scattering 160 GeV/$c$ muons off transversely polarised protons. Fivesingle-spin and three double-spin azimuthal asymmetries were measured as afunction of $Q^2$, $x_{Bj}$, or $p_{T}^{2}$. The $\sin \phi_S$ asymmetry isfound to be $-0.019 \pm 0.008(stat.) \pm 0.003(syst.)$. All other asymmetriesare also found to be of small magnitude and consistent with zero withinexperimental uncertainties. Very recent calculations using a GPD-based modelagree well with the present results. The data is interpreted as evidence forthe existence of chiral-odd, transverse generalized parton distributions.
DA  - 2014
DO  - 10.1016/j.physletb.2014.02.005
LA  - eng
M2  - 19
PY  - 2014
SN  - 0370-2693
SP  - 19-26
T2  - Physics Letters B
TI  - Transverse target spin asymmetries in exclusive $ρ^0$ muoproduction
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-26422483
Y2  - 2024-11-21T19:42:16
ER  -