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arXiv · 2101.06134

Differential cross sections for {\Lambda}(1520) using photoproduction at CLAS

U. Shrestha·T. Chetry·C. Djalali·K. Hicks·S. i. Nam·K. P. Adhikari·S. Adhikari·M. J. Amaryan·G. Angelini·H. Atac·L. Barion·M. Battaglieri·I. Bedlinskiy·F. Benmokhtar·A. Bianconi·A. S. Biselli·M. Bondi·F. Bossu·S. Boiarinov·W. J. Briscoe·W. K. Brooks·D. Bulumulla·V. D. Burkert·D. S. Carman·J. C. Carvajal·A. Celentano·P. Chatagnon·G. Ciullo·P. L. Cole·M. Contalbrigo·V. Crede·A. De Angelo·N. Dashyan·R. De Vita·M. Defurne·A. Deur·S. Diehl·M. Dugger·R. Dupre·H. Egiyan·M. Ehrhart·L. El Fassi·P. Eugenio·G. Fedotov·S. Fegan·A. Filippi·G. Gavalian·Y. Ghandilyan·G. P. Gilfoyle·F. X. Girod·D. I. Glazier·R. W. Gothe·K. A. Griffioen·M. Guidal·L. Guo·K. Hafidi·H. Hakobyan·M. Hattawy·T. B. Hayward·D. Heddle·M. Holtrop·Q. Huang·D. G. Ireland·E. L. Isupov·H. S. Jo·K. Joo·S. Joosten·D. Keller·A. Khanal·M. Khandaker·A. Kim·W. Kim·F. J. Klein·A. Kripko·V. Kubarovsky·L. Lanza·M. Leali·P. Lenisa·K. Livingston·I. J. D. MacGregor·D. Marchand·L. Marsicano·V. Mascagna·M. E. McCracken·B. McKinnon·V. Mokeev·A. Movsisyan·E. Munevar·C. Munoz Camacho·P. Nadel Turonski·5 K. Neupane·S. Niccolai·G. Niculescu·T. O'Connell·M. Osipenko·A. I. Ostrovidov·L. L. Pappalardo·R. Paremuzyan·K. Park·E. Pasyuk
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Abstract

The reaction $\gamma p \rightarrow K^{+} \Lambda(1520)$ using photoproduction data from the CLAS $g12$ experiment at Jefferson Lab is studied. The decay of $\Lambda(1520)$ into two exclusive channels, $\Sigma^{+}\pi^{-}$ and $\Sigma^{-}\pi^{+}$, is studied from the detected $K^{+}$, $\pi^{+}$, and $\pi^{-}$ particles. A good agreement is established for the $\Lambda(1520)$ differential cross sections with the previous CLAS measurements. The differential cross sections as a function of CM angle are extended to higher photon energies. Newly added are the differential cross sections as a function of invariant 4-momentum transfer $t$, which is the natural variable to use for a theoretical model based on a Regge-exchange reaction mechanism. No new $N^*$ resonances decaying into the $K^+\Lambda(1520)$ final state are found.

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U. Shrestha, T. Chetry, C. Djalali, K. Hicks, S. i. Nam, K. P. Adhikari, S. Adhikari, M. J. Amaryan, G. Angelini, H. Atac, L. Barion, M. Battaglieri, I. Bedlinskiy, F. Benmokhtar, A. Bianconi, A. S. Biselli, M. Bondi, F. Bossu, S. Boiarinov, W. J. Briscoe, W. K. Brooks, D. Bulumulla, V. D. Burkert, D. S. Carman, J. C. Carvajal, A. Celentano, P. Chatagnon, G. Ciullo, P. L. Cole, M. Contalbrigo, V. Crede, A. De Angelo, N. Dashyan, R. De Vita, M. Defurne, A. Deur, S. Diehl, M. Dugger, R. Dupre, H. Egiyan, M. Ehrhart, L. El Fassi, P. Eugenio, G. Fedotov, S. Fegan, A. Filippi, G. Gavalian, Y. Ghandilyan, G. P. Gilfoyle, F. X. Girod, D. I. Glazier, R. W. Gothe, K. A. Griffioen, M. Guidal, L. Guo, K. Hafidi, H. Hakobyan, M. Hattawy, T. B. Hayward, D. Heddle, M. Holtrop, Q. Huang, D. G. Ireland, E. L. Isupov, H. S. Jo, K. Joo, S. Joosten, D. Keller, A. Khanal, M. Khandaker, A. Kim, W. Kim, F. J. Klein, A. Kripko, V. Kubarovsky, L. Lanza, M. Leali, P. Lenisa, K. Livingston, I. J. D. MacGregor, D. Marchand, L. Marsicano, V. Mascagna, M. E. McCracken, B. McKinnon, V. Mokeev, A. Movsisyan, E. Munevar, C. Munoz Camacho, P. Nadel Turonski, 5 K. Neupane, S. Niccolai, G. Niculescu, T. O'Connell, M. Osipenko, A. I. Ostrovidov, L. L. Pappalardo, R. Paremuzyan, K. Park, E. Pasyuk. 2021-01-15. Differential cross sections for {\Lambda}(1520) using photoproduction at CLAS. https://doi.org/10.1103/physrevc.103.025206

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