학술논문
Inclusive studies of two- and three-nucleon short-range correlations in $^3$H and $^3$He
Document Type
Working Paper
Author
Li, S.; Santiesteban, S. N.; Arrington, J.; Cruz-Torres, R.; Kurbany, L.; Abrams, D.; Alsalmi, S.; Androic, D.; Aniol, K.; Averett, T.; Gayoso, C. Ayerbe; Bane, J.; Barcus, S.; Barrow, J.; Beck, A.; Bellini, V.; Bhatt, H.; Bhetuwal, D.; Biswas, D.; Bulumulla, D.; Camsonne, A.; Castellanos, J.; Chen, J.; Chen, J-P.; Chrisman, D.; Christy, M. E.; Clarke, C.; Covrig, S.; Craycraft, K.; Day, D.; Dutta, D.; Fuchey, E.; Gal, C.; Garibaldi, F.; Gautam, T. N.; Gogami, T.; Gomez, J.; Guéye, P.; Habarakada, A.; Hague, T. J.; Hansen, J. O.; Hauenstein, F.; Henry, W.; Higinbotham, D. W.; Holt, R. J.; Hyde, C.; Itabashi, K.; Kaneta, M.; Karki, A.; Katramatou, A. T.; Keppel, C. E.; Khachatryan, M.; Khachatryan, V.; King, P. M.; Korover, I.; Kutz, T.; Lashley-Colthirst, N.; Li, W. B.; Liu, H.; Liyanage, N.; Long, E.; Mammei, J.; Markowitz, P.; McClellan, R. E.; Meddi, F.; Meekins, D.; Beck, S. Mey-Tal; Michaels, R.; Mihovilovič, M.; Moyer, A.; Nagao, S.; Nelyubin, V.; Nguyen, D.; Nycz, M.; Olson, M.; Ou, L.; Owen, V.; Palatchi, C.; Pandey, B.; Papadopoulou, A.; Park, S.; Paul, S.; Petkovic, T.; Pomatsalyuk, R.; Premathilake, S.; Punjabi, V.; Ransome, R. D.; Reimer, P. E.; Reinhold, J.; Riordan, S.; Roche, J.; Rodriguez, V. M.; Schmidt, A.; Schmookler, B.; Segarra, E. P.; Shahinyan, A.; Širca, S.; Slifer, K.; Solvignon, P.; Su, T.; Suleiman, R.; Szumila-Vance, H.; Tang, L.; Tian, Y.; Tireman, W.; Tortorici, F.; Toyama, Y.; Uehara, K.; Urciuoli, G. M.; Votaw, D.; Williamson, J.; Wojtsekhowski, B.; Wood, S.; Ye, Z. H.; Zhang, J.; Zheng, X.
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Abstract
Inclusive electron scattering at carefully chosen kinematics can isolate scattering from short-range correlations (SRCs), produced through hard, short-distance interactions of nucleons in the nucleus. Because the two-nucleon (2N) SRCs arise from the same N-N interaction in all nuclei, the cross section in the SRC-dominated regime is identical up to an overall scaling factor, and the A/2H cross section ratio is constant in this region. This scaling behavior has been used to identify SRC dominance and to map out the contribution of SRCs for a wide range of nuclei. We examine this scaling behavior at lower momentum transfers using new data on $^2$H, $^3$H, and $^3$He which show that the scaling region is larger than in heavy nuclei. Based on the improved scaling, especially for $^3$H/$^3$He, we examine the ratios at kinematics where three-nucleon SRCs may play an important role. The data for the largest initial nucleon momenta are consistent with isolation of scattering from 3N-SRCs, and suggest that the very-highest momentum nucleons in $^3$He have a nearly isospin-independent momentum configuration, or a small enhancement of the proton distribution.