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Title: Strangeness suppression of q q ¯ creation observed in exclusive reactions

In this study, we measured the ratios of electroproduction cross sections from a proton target for three exclusive meson-baryon final states: ΛK +, pπ 0, and nπ +, with the CLAS detector at Jefferson Lab. Using a simple model of quark hadronization, we extract qq¯ creation probabilities for the first time in exclusive two-body production, in which only a single qq¯ pair is created. We observe a sizable suppression of strange quark-antiquark pairs compared to nonstrange pairs, similar to that seen in high-energy production.
Authors:
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Publication Date:
Report Number(s):
JLAB-PHY-14-1944; DOE/OR/23177-3197
Journal ID: ISSN 0031-9007; PRLTAO; ArticleNumber: 152004
Grant/Contract Number:
AC05-84ER40150
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 113; Journal Issue: 15; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Contributing Orgs:
CLAS Collaboration
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
OSTI Identifier:
1159646
Alternate Identifier(s):
OSTI ID: 1181425

Mestayer, M. D., Park, K., Adhikari, K. P., Aghasyan, M., Pereira, S. Anefalos, Ball, J., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A. S., Boiarinov, S., Briscoe, W. J., Brooks, W. K., Burkert, V. D., Carman, D. S., Celentano, A., Chandavar, S., Charles, G., Colaneri, L., Cole, P. L., Contalbrigo, M., Cortes, O., Crede, V., D’Angelo, A., Dashyan, N., De Vita, R., Deur, A., Djalali, C., Doughty, D., Dupre, R., Alaoui, A. El, Fassi, L. El, Elouadrhiri, L., Eugenio, P., Fedotov, G., Fleming, J. A., Forest, T. A., Garillon, B., Garçon, M., Ghandilyan, Y., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Goetz, J. T., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guegan, B., Guidal, M., Hakobyan, H., Hanretty, C., Hattawy, M., Holtrop, M., Hughes, S. M., Hyde, C. E., Ilieva, Y., Ireland, D. G., Jiang, H., Jo, H. S., Joo, K., Keller, D., Khandaker, M., Kim, A., Kim, W., Koirala, S., Kubarovsky, V., Kuleshov, S. V., Lenisa, P., Levine, W. I., Livingston, K., Lu, H. Y., MacGregor, I. J. D., Mayer, M., McKinnon, B., Meyer, C. A., Mirazita, M., Mokeev, V., Montgomery, R. A., Moody, C. I., Moutarde, H., Movsisyan, A., Camacho, C. Munoz, Nadel-Turonski, P., Niccolai, S., Niculescu, G., Niculescu, I., Osipenko, M., Ostrovidov, A. I., Pappalardo, L. L., Paremuzyan, R., Peng, P., Phelps, W., Pisano, S., Pogorelko, O., Pozdniakov, S., Price, J. W., Protopopescu, D., Puckett, A. J. R., Raue, B. A., Rimal, D., Ripani, M., Rizzo, A., Rosner, G., Roy, P., Sabatié, F., Saini, M. S., Schott, D., Schumacher, R. A., Simonyan, A., Sokhan, D., Strauch, S., Sytnik, V., Tang, W., Tian, Ye, Ungaro, M., Vernarsky, B., Vlassov, A. V., Voskanyan, H., Voutier, E., Walford, N. K., Watts, D. P., Wei, X., Weinstein, L. B., Wood, M. H., Zachariou, N., Zhang, J., Zhao, Z. W., and Zonta, I.. Strangeness suppression of qq¯ creation observed in exclusive reactions. United States: N. p., Web. doi:10.1103/PhysRevLett.113.152004.
Mestayer, M. D., Park, K., Adhikari, K. P., Aghasyan, M., Pereira, S. Anefalos, Ball, J., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A. S., Boiarinov, S., Briscoe, W. J., Brooks, W. K., Burkert, V. D., Carman, D. S., Celentano, A., Chandavar, S., Charles, G., Colaneri, L., Cole, P. L., Contalbrigo, M., Cortes, O., Crede, V., D’Angelo, A., Dashyan, N., De Vita, R., Deur, A., Djalali, C., Doughty, D., Dupre, R., Alaoui, A. El, Fassi, L. El, Elouadrhiri, L., Eugenio, P., Fedotov, G., Fleming, J. A., Forest, T. A., Garillon, B., Garçon, M., Ghandilyan, Y., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Goetz, J. T., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guegan, B., Guidal, M., Hakobyan, H., Hanretty, C., Hattawy, M., Holtrop, M., Hughes, S. M., Hyde, C. E., Ilieva, Y., Ireland, D. G., Jiang, H., Jo, H. S., Joo, K., Keller, D., Khandaker, M., Kim, A., Kim, W., Koirala, S., Kubarovsky, V., Kuleshov, S. V., Lenisa, P., Levine, W. I., Livingston, K., Lu, H. Y., MacGregor, I. J. D., Mayer, M., McKinnon, B., Meyer, C. A., Mirazita, M., Mokeev, V., Montgomery, R. A., Moody, C. I., Moutarde, H., Movsisyan, A., Camacho, C. Munoz, Nadel-Turonski, P., Niccolai, S., Niculescu, G., Niculescu, I., Osipenko, M., Ostrovidov, A. I., Pappalardo, L. L., Paremuzyan, R., Peng, P., Phelps, W., Pisano, S., Pogorelko, O., Pozdniakov, S., Price, J. W., Protopopescu, D., Puckett, A. J. R., Raue, B. A., Rimal, D., Ripani, M., Rizzo, A., Rosner, G., Roy, P., Sabatié, F., Saini, M. S., Schott, D., Schumacher, R. A., Simonyan, A., Sokhan, D., Strauch, S., Sytnik, V., Tang, W., Tian, Ye, Ungaro, M., Vernarsky, B., Vlassov, A. V., Voskanyan, H., Voutier, E., Walford, N. K., Watts, D. P., Wei, X., Weinstein, L. B., Wood, M. H., Zachariou, N., Zhang, J., Zhao, Z. W., & Zonta, I.. Strangeness suppression of qq¯ creation observed in exclusive reactions. United States. doi:10.1103/PhysRevLett.113.152004.
Mestayer, M. D., Park, K., Adhikari, K. P., Aghasyan, M., Pereira, S. Anefalos, Ball, J., Battaglieri, M., Batourine, V., Bedlinskiy, I., Biselli, A. S., Boiarinov, S., Briscoe, W. J., Brooks, W. K., Burkert, V. D., Carman, D. S., Celentano, A., Chandavar, S., Charles, G., Colaneri, L., Cole, P. L., Contalbrigo, M., Cortes, O., Crede, V., D’Angelo, A., Dashyan, N., De Vita, R., Deur, A., Djalali, C., Doughty, D., Dupre, R., Alaoui, A. El, Fassi, L. El, Elouadrhiri, L., Eugenio, P., Fedotov, G., Fleming, J. A., Forest, T. A., Garillon, B., Garçon, M., Ghandilyan, Y., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Goetz, J. T., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guegan, B., Guidal, M., Hakobyan, H., Hanretty, C., Hattawy, M., Holtrop, M., Hughes, S. M., Hyde, C. E., Ilieva, Y., Ireland, D. G., Jiang, H., Jo, H. S., Joo, K., Keller, D., Khandaker, M., Kim, A., Kim, W., Koirala, S., Kubarovsky, V., Kuleshov, S. V., Lenisa, P., Levine, W. I., Livingston, K., Lu, H. Y., MacGregor, I. J. D., Mayer, M., McKinnon, B., Meyer, C. A., Mirazita, M., Mokeev, V., Montgomery, R. A., Moody, C. I., Moutarde, H., Movsisyan, A., Camacho, C. Munoz, Nadel-Turonski, P., Niccolai, S., Niculescu, G., Niculescu, I., Osipenko, M., Ostrovidov, A. I., Pappalardo, L. L., Paremuzyan, R., Peng, P., Phelps, W., Pisano, S., Pogorelko, O., Pozdniakov, S., Price, J. W., Protopopescu, D., Puckett, A. J. R., Raue, B. A., Rimal, D., Ripani, M., Rizzo, A., Rosner, G., Roy, P., Sabatié, F., Saini, M. S., Schott, D., Schumacher, R. A., Simonyan, A., Sokhan, D., Strauch, S., Sytnik, V., Tang, W., Tian, Ye, Ungaro, M., Vernarsky, B., Vlassov, A. V., Voskanyan, H., Voutier, E., Walford, N. K., Watts, D. P., Wei, X., Weinstein, L. B., Wood, M. H., Zachariou, N., Zhang, J., Zhao, Z. W., and Zonta, I.. 2014. "Strangeness suppression of qq¯ creation observed in exclusive reactions". United States. doi:10.1103/PhysRevLett.113.152004. https://www.osti.gov/servlets/purl/1159646.
@article{osti_1159646,
title = {Strangeness suppression of qq¯ creation observed in exclusive reactions},
author = {Mestayer, M. D. and Park, K. and Adhikari, K. P. and Aghasyan, M. and Pereira, S. Anefalos and Ball, J. and Battaglieri, M. and Batourine, V. and Bedlinskiy, I. and Biselli, A. S. and Boiarinov, S. and Briscoe, W. J. and Brooks, W. K. and Burkert, V. D. and Carman, D. S. and Celentano, A. and Chandavar, S. and Charles, G. and Colaneri, L. and Cole, P. L. and Contalbrigo, M. and Cortes, O. and Crede, V. and D’Angelo, A. and Dashyan, N. and De Vita, R. and Deur, A. and Djalali, C. and Doughty, D. and Dupre, R. and Alaoui, A. El and Fassi, L. El and Elouadrhiri, L. and Eugenio, P. and Fedotov, G. and Fleming, J. A. and Forest, T. A. and Garillon, B. and Garçon, M. and Ghandilyan, Y. and Gilfoyle, G. P. and Giovanetti, K. L. and Girod, F. X. and Goetz, J. T. and Golovatch, E. and Gothe, R. W. and Griffioen, K. A. and Guegan, B. and Guidal, M. and Hakobyan, H. and Hanretty, C. and Hattawy, M. and Holtrop, M. and Hughes, S. M. and Hyde, C. E. and Ilieva, Y. and Ireland, D. G. and Jiang, H. and Jo, H. S. and Joo, K. and Keller, D. and Khandaker, M. and Kim, A. and Kim, W. and Koirala, S. and Kubarovsky, V. and Kuleshov, S. V. and Lenisa, P. and Levine, W. I. and Livingston, K. and Lu, H. Y. and MacGregor, I. J. D. and Mayer, M. and McKinnon, B. and Meyer, C. A. and Mirazita, M. and Mokeev, V. and Montgomery, R. A. and Moody, C. I. and Moutarde, H. and Movsisyan, A. and Camacho, C. Munoz and Nadel-Turonski, P. and Niccolai, S. and Niculescu, G. and Niculescu, I. and Osipenko, M. and Ostrovidov, A. I. and Pappalardo, L. L. and Paremuzyan, R. and Peng, P. and Phelps, W. and Pisano, S. and Pogorelko, O. and Pozdniakov, S. and Price, J. W. and Protopopescu, D. and Puckett, A. J. R. and Raue, B. A. and Rimal, D. and Ripani, M. and Rizzo, A. and Rosner, G. and Roy, P. and Sabatié, F. and Saini, M. S. and Schott, D. and Schumacher, R. A. and Simonyan, A. and Sokhan, D. and Strauch, S. and Sytnik, V. and Tang, W. and Tian, Ye and Ungaro, M. and Vernarsky, B. and Vlassov, A. V. and Voskanyan, H. and Voutier, E. and Walford, N. K. and Watts, D. P. and Wei, X. and Weinstein, L. B. and Wood, M. H. and Zachariou, N. and Zhang, J. and Zhao, Z. W. and Zonta, I.},
abstractNote = {In this study, we measured the ratios of electroproduction cross sections from a proton target for three exclusive meson-baryon final states: ΛK+, pπ0, and nπ+, with the CLAS detector at Jefferson Lab. Using a simple model of quark hadronization, we extract qq¯ creation probabilities for the first time in exclusive two-body production, in which only a single qq¯ pair is created. We observe a sizable suppression of strange quark-antiquark pairs compared to nonstrange pairs, similar to that seen in high-energy production.},
doi = {10.1103/PhysRevLett.113.152004},
journal = {Physical Review Letters},
number = 15,
volume = 113,
place = {United States},
year = {2014},
month = {10}
}