Ruling out Color Transparency in Quasielastic ^{12}C(e,e^{'}p) up to Q^{2} of 14.2  (GeV/c)^{2}

• Published in: Physical review letters 2021-02, Vol.126 (8), p.082301-082301
• Main Authors: Bhetuwal, D, Matter, J, Szumila-Vance, H, Kabir, M L, Dutta, D, Ent, R, Abrams, D, Ahmed, Z, Aljawrneh, B, Alsalmi, S, Ambrose, R, Androic, D, Armstrong, W, Asaturyan, A, Assumin-Gyimah, K, Ayerbe Gayoso, C, Bandari, A, Basnet, S, Berdnikov, V, Bhatt, H, Biswas, D, Boeglin, W U, Bosted, P, Brash, E, Bukhari, M H S, Chen, H, Chen, J P, Chen, M, Christy, E M, Covrig, S, Craycraft, K, Danagoulian, S, Day, D, Diefenthaler, M, Dlamini, M, Dunne, J, Duran, B, Evans, R, Fenker, H, Fomin, N, Fuchey, E, Gaskell, D, Gautam, T N, Gonzalez, F A, Hansen, J O, Hauenstein, F, Hernandez, A V, Horn, T, Huber, G M, Jones, M K, Joosten, S, Karki, A, Keppel, C, Khanal, A, King, P M, Kinney, E, Ko, H S, Kohl, M, Lashley-Colthirst, N, Li, S, Li, W B, Liyanage, A H, Mack, D, Malace, S, Markowitz, P, Meekins, D, Michaels, R, Mkrtchyan, A, Mkrtchyan, H, Nazeer, S J, Nanda, S, Niculescu, G, Niculescu, I, Nguyen, D, Nuruzzaman, Pandey, B, Park, S, Pooser, E, Puckett, A, Rehfuss, M, Reinhold, J, Santiesteban, N, Sawatzky, B, Smith, G R, Sun, A, Tadevosyan, V, Trotta, R, Wood, S A, Yero, C, Zhang, J
• Format: Article
• Language: English
• ISSN: 1079-7114
• DOI: 10.1103/PhysRevLett.126.082301

Quasielastic ^{12}C(e,e^{'}p) scattering was measured at spacelike 4-momentum transfer squared Q^{2}=8, 9.4, 11.4, and 14.2  (GeV/c)^{2}, the highest ever achieved to date. Nuclear transparency for this reaction was extracted by comparing the measured yield to that expected from a plane-wave impulse approximation calculation without any final state interactions. The measured transparency was consistent with no Q^{2} dependence, up to proton momenta of 8.5  GeV/c, ruling out the quantum chromodynamics effect of color transparency at the measured Q^{2} scales in exclusive (e,e^{'}p) reactions. These results impose strict constraints on models of color transparency for protons.