ECCE unpolarized TMD measurements
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Detector physics impact studies, Semi-inclusive DIS, Transverse momentum dependent distribution and fragmentation functions
We performed feasibility studies for various measurements that are related to unpolarized TMD distribution and fragmentation functions for the ECCE detector proposal. The processes studied include semi-inclusive Deep inelastic scattering (SIDIS) where single hadrons (pions and kaons) were detected in addition to the scattered DIS lepton. The single hadron cross sections and multiplicities were extracted as a function of the DIS variables x and Q2, as well as the semi-inclusive variables z, which corresponds to the momentum fraction the detected hadron carries relative to the struck parton and PT, which corresponds to the transverse momentum of the detected hadron relative to the virtual photon. The expected statistical precision of such measurements is extrapolated to accumulated luminosities of 10 fb−1 and potential systematic uncertainties are approximated given the deviations between true and reconstructed yields. The expected uncertainties are then used to obtain the expected impact on the related TMD distribution and fragmentation functions. We find that the ECCE detector proposal fulfills the physics requirements on these channels as detailed in the EIC Yellow Report.
Seidl, R., Vladimirov, A., Adkins, J., Akiba, Y., Albataineh, A., Amaryan, M., Arsene, I., Gayoso, C., Bae, J., Bai, X., Baker, M., Bashkanov, M., Bellwied, R., Benmokhtar, F., Berdnikov, V., Bernauer, J., & Bock, F. (2023). ECCE unpolarized TMD measurements. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1055. https://doi.org/10.1016/j.nima.2023.168458