Differential cross section and recoil polarization measurements for the γp→K+Λ reaction using CLAS at Jefferson Lab

M. E. McCracken, M. Bellis, C. A. Meyer, M. Williams, K. P. Adhikari, M. Anghinolfi, J. Ball, M. Battaglieri, B. L. Berman, A. S. Biselli, D. Branford, W. J. Briscoe, W. K. Brooks, V. D. Burkert, S. L. Careccia, D. S. Carman, P. L. Cole, P. Collins, V. Crede, A. D'AngeloA. Daniel, N. Dashyan, R. De Vita, E. De Sanctis, A. Deur, B. Dey, S. Dhamija, R. Dickson, C. Djalali, D. Doughty, M. Dugger, R. Dupre, A. El Alaoui, P. Eugenio, S. Fegan, A. Fradi, M. Y. Gabrielyan, K. L. Giovanetti, F. X. Girod, J. T. Goetz, W. Gohn, R. W. Gothe, K. A. Griffioen, M. Guidal, K. Hafidi, H. Hakobyanm, C. Hanretty, N. Hassall, K. Hicks, M. Holtrop, Y. Ilieva, D. G. Ireland, H. S. Jo, D. Keller, M. Khandaker, P. Khetarpal, W. Kim, A. Klein, F. J. Klein, V. Kubarovsky, S. V. Kuleshov, V. Kuznetsov, K. Livingston, M. Mayer, J. McAndrew, B. McKinnon, M. D. Mestayer, T. Mineeva, M. Mirazita, V. Mokeev, B. Moreno, K. Moriya, B. Morrison, H. Moutarde, E. Munevar, P. Nadel-Turonski, S. Niccolai, G. Niculescu, I. Niculescu, M. Osipenko, A. I. Ostrovidov, K. Park, S. Park, E. Pasyuk, S. Anefalos Pereira, Y. Perrin, S. Pisano, O. Pogorelko, S. Pozdniakov, J. W. Price, S. Procureur, Y. Prok, D. Protopopescu, B. Quinn, B. A. Raue, G. Ricco, M. Ripani, B. G. Ritchie, G. Rosner, P. Rossi, F. Sabatié, M. S. Saini, J. Salamanca, D. Schott, R. A. Schumacher, E. Seder, H. Seraydaryan, Y. G. Sharabian, D. I. Sober, D. Sokhan, S. S. Stepanyan, P. Stoler, S. Strauch, M. Taiuti, D. J. Tedeschi, S. Tkachenko, M. Ungaro, B. Vernarsky, M. F. Vineyard, D. Watts, E. Voutier, L. B. Weinstein, D. P. Weygand, M. H. Wood, L. Zana

Research output: Contribution to journalArticle

162 Scopus citations

Abstract

We present measurements of the differential cross section and Λ recoil polarization for the γp→K+Λ reaction made using the CLAS detector at Jefferson Lab. These measurements cover the center-of-mass energy range from 1.62 to 2.84 GeV and a wide range of center-of-mass K+ production angles. Independent analyses were performed using the K+- and K+p (missing π-) final-state topologies; results from these analyses were found to exhibit good agreement. These differential-cross-section measurements show excellent agreement with previous CLAS and LEPS results and offer increased precision and a 300-MeV increase in energy coverage. The recoil polarization data agree well with previous results and offer a large increase in precision and a 500-MeV extension in energy range. The increased center-of-mass energy range that these data represent will allow for independent study of nonresonant K+Λ photoproduction mechanisms at all production angles.

Original languageEnglish (US)
Article number025201
JournalPhysical Review C - Nuclear Physics
Volume81
Issue number2
DOIs
StatePublished - Feb 11 2010

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Differential cross section and recoil polarization measurements for the γp→K<sup>+</sup>Λ reaction using CLAS at Jefferson Lab'. Together they form a unique fingerprint.

  • Cite this

    McCracken, M. E., Bellis, M., Meyer, C. A., Williams, M., Adhikari, K. P., Anghinolfi, M., Ball, J., Battaglieri, M., Berman, B. L., Biselli, A. S., Branford, D., Briscoe, W. J., Brooks, W. K., Burkert, V. D., Careccia, S. L., Carman, D. S., Cole, P. L., Collins, P., Crede, V., ... Zana, L. (2010). Differential cross section and recoil polarization measurements for the γp→K+Λ reaction using CLAS at Jefferson Lab. Physical Review C - Nuclear Physics, 81(2), [025201]. https://doi.org/10.1103/PhysRevC.81.025201