Measurement of spin density matrix elements in Λ ( 1520 ) photoproduction at 8.2–8.8 GeV
- Adhikari, S.
- Akondi, C. S.
- Barriga, E.
- Ritchie, B. G.
- Ritman, J.
- Rodriguez, G.
- Romanov, D.
- Romero, C.
- Saldana, K.
- Salgado, C.
- Schadmand, Susan
- Schertz, A. M.
- Schick, A.
- Barsotti, R.
- Schmidt, A.
- Schumacher, R. A.
- Schwiening, J.
- Sharp, P.
- Shen, X.
- Shepherd, M. R.
- Smith, A.
- Smith, E. S.
- Sober, D. I.
- Somov, A.
- Beattie, T. D.
- Somov, S.
- Soto, O.
- Stevens, J. R.
- Strakovsky, I. I.
- Sumner, B.
- Suresh, K.
- Tarasov, V. V.
- Taylor, S.
- Teymurazyan, A.
- Thiel, A.
- Berdnikov, V. V.
- Vasileiadis, G.
- Viducic, T.
- Whitlatch, T.
- Wickramaarachchi, N.
- Williams, M.
- Yang, Y.
- Zarling, J.
- Zhang, Z.
- Zhao, Z.
- Zhou, J.
- Black, T.
- Zhou, X.
- Zhou, Q.
- Zihlmann, B.
- Glazier, D. I.
- Mathieu, V.
- Boeglin, W.
- Briscoe, W. J.
- Britton, T.
- Brooks, W. K.
- Chudakov, E.
- Albrecht, M.
- Cole, S.
- Cole, P. L.
- Cortes, O.
- Crede, V.
- Dalton, M. M.
- Daniels, T.
- Deur, A.
- Dobbs, S.
- Dolgolenko, A.
- Dotel, R.
- Ali, A.
- Dugger, M.
- Dzhygadlo, R.
- Egiyan, H.
- Erbora, T.
- Ernst, A.
- Eugenio, P.
- Fanelli, C.
- Fegan, S.
- Fitches, J.
- Foda, A. M.
- Amaryan, M.
- Furletov, S.
- Gan, L.
- Gao, H.
- Gasparian, A.
- Gleason, C.
- Goetzen, K.
- Goryachev, V. S.
- Guo, L.
- Hagen, M.
- Hakobyan, H.
- Asaturyan, A.
- Hamdi, A.
- Hernandez, J.
- Hoffman, N. D.
- Hou, G.
- Huber, G. M.
- Hurley, A.
- Ireland, D. G.
- Ito, M. M.
- Jaegle, I.
- Jarvis, N. S.
- Austregesilo, A.
- Jones, R. T.
- Kakoyan, V.
- Kalicy, G.
- Kamel, M.
- Khachatryan, V.
- Khatchatryan, M.
- Kourkoumelis, C.
- Kuleshov, S.
- LaDuke, A.
- Larin, I.
- Baldwin, Z.
- Lawrence, D.
- Lersch, D. I.
- Li, H.
- Li, W. B.
- Liu, B.
- Livingston, K.
- Lolos, G. J.
- Luckas, K.
- Lyubovitskij, V.
- Mack, D.
- Barbosa, F.
- Mahmood, A.
- Marukyan, H.
- Matveev, V.
- McCaughan, M.
- McCracken, M.
- Meyer, C. A.
- Miskimen, R.
- Mitchell, R. E.
- Mizutani, K.
- Neelamana, V.
- Barlow, J.
- Nerling, F.
- Ng, L.
- Ostrovidov, A. I.
- Papandreou, Z.
- Paudel, C.
- Pauli, P.
- Pedroni, R.
- Pentchev, L.
- Peters, K. J.
- Reinhold, J.
Publication date
January 2022
DOI Publisher
American Physical Society (APS)Abstract
We report on the measurement of spin density matrix elements of the Λ(1520) in the photoproduction reaction γp→Λ(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 Laboratory using a linearly polarized photon beam with Eγ=8.2GeV–8.8GeV. These are the first such measurements in this photon energy range. Results are presented in bins of momentum transfer squared, −(t−t0). We compare the results with a Reggeon exchange model and determine that natural exchange amplitudes are dominant in Λ(1520) photoproduction
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