Measurement of Spin Density Matrix Elements in \(\Lambda(1520)\) Photoproduction at 8.2-8.8 GeV

• Published in: arXiv.org
• Main Authors: Akondi, C S, Albrecht, M, Ali, A, Amaryan, M, Asaturyan, A, Austregesilo, A, Baldwin, Z, Barbosa, F, Barlow, J, Barriga, E, Barsotti, R, Berdnikov, V V, Boeglin, W, Briscoe, W J, Brooks, W K, Chudakov, E, Cole, S, Cole, P L, Cortes, O, Crede, V, Dalton, M M, Daniels, T, Deur, A, Dobbs, S, Dotel, R, Dugger, M, Dzhygadlo, R, Egiyan, H, Erbora, T, Ernst, A, Eugenio, P, Fegan, S, Fitches, J, Foda, A M, Gao, H, Gleason, C, Goetzen, K, Guo, L, Hagen, M, Hakobyan, H, Hernandez, J, Hou, G, Huber, G M, Ireland, D G, Jaegle, I, Jarvis, N S, Jones, R T, Kakoyan, V, Kamel, M, Khachatryan, V, Khatchatryan, M, Kourkoumelis, C, Kuleshov, S, LaDuke, A, Larin, I, H Li, Liu, B, Mack, D, Marukyan, H, McCaughan, M, McCracken, M, Miskimen, R, Nerling, F, L Ng, Ostrovidov, A I, Papandreou, Z, Paudel, C, Pauli, P, Pedroni, R, Pentchev, L, Peters, K J, Reinhold, J, Ritchie, B G, Romero, C, Saldana, K, Salgado, C, Schertz, A M, Schick, A, Schmidt, A, Schumacher, R A, Sharp, P, Shepherd, M R, Smith, A, Smith, E S, Somov, A, Strakovsky, I I, Sumner, B, Tarasov, V V, Taylor, S, Thiel, A, Viducic, T, Wickramaarachchi, N, Williams, M, Yang, Y, Zhang, Z, Zhou, J, Zhou, X, Zhou, Q, Zihlmann, B, Glazier, D I
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 03.03.2022
• Subjects: Density; Linear polarization; Momentum transfer; Photon beams; Photons; Photoproduction
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.2107.12314

We report on the measurement of spin density matrix elements of the \(\Lambda(1520)\) in the photoproduction reaction \(\gamma p\rightarrow \Lambda(1520)K^+\), via its subsequent decay to \(K^{-}p\). The measurement was performed as part of the GlueX experimental program in Hall D at Jefferson Lab using a linearly polarized photon beam with \(E_\gamma =\) 8.2-8.8 GeV. These are the first such measurements in this photon energy range. Results are presented in bins of momentum transfer squared, \(-(t-t_\text{0})\). We compare the results with a Reggeon exchange model and determine that natural exchange amplitudes are dominant in \(\Lambda(1520)\) photoproduction.