First Measurement of Transferred Polarization in the Exclusive [Formula presented] Reaction

D. S. Carman, K. Joo, M. D. Mestayer, B. A. Raue, G. Adams, P. Ambrozewicz, E. Anciant, M. Anghinolfi, D. S. Armstrong, B. Asavapibhop, G. Audit, T. Auger, H. Avakian, H. Bagdasaryan, J. P. Ball, S. P. Barrow, M. Battaglieri, K. Beard, M. Bektasoglu, M. BellisC. Bennhold, N. Bianchi, A. S. Biselli, S. Boiarinov, B. E. Bonner, S. Bouchigny, R. Bradford, D. Branford, W. J. Briscoe, W. K. Brooks, V. D. Burkert, C. Butuceanu, J. R. Calarco, B. Carnahan, A. Cazes, C. Cetina, L. Ciciani, R. Clark, P. L. Cole, A. Coleman, D. Cords, P. Corvisiero, D. Crabb, H. Crannell, J. P. Cummings, E. DeSanctis, P. V. Degtyarenko, H. Denizli, L. Dennis, R. DeVita, K. V. Dharmawardane, K. S. Dhuga, C. Djalali, G. E. Dodge, D. Doughty, P. Dragovitsch, M. Dugger, S. Dytman, O. P. Dzyubak, M. Eckhause, H. Egiyan, K. S. Egiyan, L. Elouadrhiri, A. Empl, P. Eugenio, R. Fatemi, G. Fedotov, R. J. Feuerbach, J. Ficenec, T. A. Forest, H. Funsten, S. J. Gaff, M. Gai, M. Garçon, G. Gavalian, S. Gilad, G. P. Gilfoyle, K. L. Giovanetti, P. Girard, E. Golovach, C. I.O. Gordon, K. Griffioen, S. Grimes, M. Guidal, M. Guillo, L. Guo, V. Gyurjyan, C. Hadjidakis, R. S. Hakobyan, J. Hardie, D. Heddle, P. Heimberg, F. W. Hersman, K. Hicks, R. S. Hicks, M. Holtrop, J. Hu, C. E. Hyde-Wright, B. Ishkhanov, M. M. Ito, D. Jenkins, J. H. Kelley, J. D. Kellie, M. Khandaker, K. Y. Kim, K. Kim, W. Kim, A. Klein, F. J. Klein, A. V. Klimenko, M. Klusman, M. Kossov, L. H. Kramer, Y. Kuang, S. E. Kuhn, J. Kuhn, J. Lachniet, J. M. Laget, D. Lawrence, J. Li, K. Livingston, A. Longhi, K. Lukashin, J. J. Manak, C. Marchand, Terry Mart, S. McAleer, J. McCarthy, J. W.C. McNabb, B. A. Mecking, S. Mehrabyan, J. J. Melone, C. A. Meyer, K. Mikhailov, R. Minehart, M. Mirazita, R. Miskimen, V. Mokeev, L. Morand, S. A. Morrow, M. U. Mozer, V. Muccifora, J. Mueller, L. Y. Murphy, G. S. Mutchler, J. Napolitano, R. Nasseripour, S. O. Nelson, S. Niccolai, G. Niculescu, I. Niculescu, B. B. Niczyporuk, R. A. Niyazov, M. Nozar, G. V. O’Rielly, A. K. Opper, M. Osipenko, K. Park, K. Paschke, E. Pasyuk, G. Peterson, N. Pivnyuk, D. Pocanic, O. Pogorelko, E. Polli, S. Pozdniakov, B. M. Preedom, J. W. Price, Y. Prok, D. Protopopescu, L. M. Qin, G. Riccardi, G. Ricco, M. Ripani, B. G. Ritchie, F. Ronchetti, P. Rossi, D. Rowntree, P. Rubin, F. Sabatié, K. Sabourov, C. Salgado, J. Santoro, V. Sapunenko, R. A. Schumacher, V. S. Serov, Y. G. Sharabian, J. Shaw, S. Simionatto, A. V. Skabelin, E. S. Smith, L. C. Smith, D. I. Sober, M. Spraker, A. Stavinsky, S. Stepanyan, P. Stoler, M. Taiuti, S. Taylor, D. J. Tedeschi, U. Thoma, R. Thompson, L. Todor, C. Tur, M. Ungaro, M. F. Vineyard, A. V. Vlassov, K. Wang, L. B. Weinstein, H. Weller, D. P. Weygand, C. S. Whisnant, E. Wolin, M. H. Wood, A. Yegneswaran, J. Yun, B. Zhang, J. Zhao, Z. Zhou

Research output: Contribution to journalArticle

Abstract

The first measurements of the transferred polarization for the exclusive [Formula presented] reaction have been performed at Jefferson Laboratory using the CLAS spectrometer. A 2.567 GeV beam was used to measure the hyperon polarization over [Formula presented] from 0.3 to [Formula presented], [Formula presented] from 1.6 to 2.15 GeV, and over the full [Formula presented] center-of-mass angular range. Comparison with predictions of hadrodynamic models indicates strong sensitivity to the underlying resonance contributions. A nonrelativistic quark-model interpretation of our data suggests that the [Formula presented] quark pair is produced with spins predominantly antialigned. Implications for the validity of the most widely used quark-pair creation operator are discussed.

Original languageEnglish
Number of pages1
JournalPhysical Review Letters
Volume90
Issue number13
DOIs
Publication statusPublished - 1 Jan 2003

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    Carman, D. S., Joo, K., Mestayer, M. D., Raue, B. A., Adams, G., Ambrozewicz, P., Anciant, E., Anghinolfi, M., Armstrong, D. S., Asavapibhop, B., Audit, G., Auger, T., Avakian, H., Bagdasaryan, H., Ball, J. P., Barrow, S. P., Battaglieri, M., Beard, K., Bektasoglu, M., ... Zhou, Z. (2003). First Measurement of Transferred Polarization in the Exclusive [Formula presented] Reaction. Physical Review Letters, 90(13). https://doi.org/10.1103/PhysRevLett.90.131804