Physical Review C
The cross section of the exclusive η electroproduction reaction ep -> e'p' η was measured at Jefferson Laboratory with a 5.75 GeV electron beam and the CLAS detector. Differential cross sections d4σ /dtdQ2 dxBd φη and structure functions σU=σT + εσL, σTT, and σLT, as functions of t, were obtained over a wide range of Q2 and xB. The η structure functions are compared with those previously measured for π0 at the same kinematics. At low t, both π0 and eta are described reasonably well by generalized parton distributions (GPDs) in which chiral-odd transversity GPDs are dominant. The π0 and η data, when taken together, can facilitate the flavor decomposition of the transversity GPDs.
Original Publication Citation
Bedlinskiy, I., Kubarovsky, V., Stoler, P., Adhikari, K. P., Akbar, Z., Pereira, S. A., . . . Collaboration, C. (2017). Exclusive η electroproduction at W > 2 gev with CLAS and transversity generalized parton distributions. Physical Review C, 95(3), 035202. doi:10.1103/PhysRevC.95.035202
Bedlinskiy, I.; Kubarovsky, V.; Stoler, P.; Adhikari, K. P.; Akbar, Z.; Pereira, S. Anefalos; Avakian, H.; Ball, J.; Baltzell, N. A.; Battaglieri, M.; Hyde, C. E.; Khachatryan, M.; Kuhn, S E.; Prok, Y.; Torayev, B.; and Weinstein, L. B., "Exclusive η Electroproduction at W > 2 GeV with CLAS and Transversity Generalized Parton Distributions" (2017). Physics Faculty Publications. 27.