Strangeness suppression of qq¯ creation observed in exclusive reactions

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.

doi:10.1103/PhysRevLett.113.152004

Title: Strangeness suppression of $q \bar{q}$ creation observed in exclusive reactions

Journal Article · Fri Oct 10 00:00:00 EDT 2014 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.113.152004· OSTI ID:1159646

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. more »

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.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Contributing Organization:: CLAS Collaboration

Grant/Contract Number:: AC05-84ER40150

OSTI ID:: 1159646

Alternate ID(s):: OSTI ID: 1181425

Report Number(s):: JLAB-PHY-14-1944; DOE/OR/23177-3197; PRLTAO; ArticleNumber: 152004

Journal Information:: Physical Review Letters, Vol. 113, Issue 15; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 14 works

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References (17)

On Gauge Invariance and Vacuum Polarization Schwinger, Julian Physical Review, Vol. 82, Issue 5 https://doi.org/10.1103/PhysRev.82.664	journal	June 1951
Decay rates of meson resonances in a quark model Micu, L. Nuclear Physics B, Vol. 10, Issue 3 https://doi.org/10.1016/0550-3213(69)90039-X	journal	May 1969
Regge Amplitude Arising from ${SU (6)}_{W}$ Vertices Carlitz, R.; Kislinger, M. Physical Review D, Vol. 2, Issue 2 https://doi.org/10.1103/PhysRevD.2.336	journal	July 1970
"Naive" Quark-Pair-Creation Model of Strong-Interaction Vertices Le Yaouanc, A.; Oliver, L.; Pène, O. Physical Review D, Vol. 8, Issue 7 https://doi.org/10.1103/PhysRevD.8.2223	journal	October 1973
Chromoelectric-flux-tube model of particle production Casher, A.; Neuberger, H.; Nussinov, S. Physical Review D, Vol. 20, Issue 1 https://doi.org/10.1103/PhysRevD.20.179	journal	July 1979
Finite-time corrections to the chromoelectric-flux-tube model Neuberger, H. Physical Review D, Vol. 20, Issue 11 https://doi.org/10.1103/PhysRevD.20.2936	journal	December 1979
The Lund Model Andersson, Bo Cambridge Monographs on Particle Physics, Nuclear Physics and Cosmology https://doi.org/10.1017/CBO9780511524363	book	January 1998
A study of particle ratios and strangeness suppression in collisions at with UA1 Bocquet, G.; Norton, A.; Wang, H. Q. Physics Letters B, Vol. 366, Issue 1-4 https://doi.org/10.1016/0370-2693(95)01437-3	journal	January 1996
A detailed study of strange particle production ine + e − annihilation at high energy Althoff, M.; Braunschweig, W.; Kirschfink, F. J. Zeitschrift für Physik C Particles and Fields, Vol. 27, Issue 1 https://doi.org/10.1007/BF01642477	journal	March 1985
A study of Ks0 production in Z0 decays Alexander, G.; Allison, J.; Allport, P. P. Physics Letters B, Vol. 264, Issue 3-4 https://doi.org/10.1016/0370-2693(91)90379-5	journal	August 1991
Production of $π^{+},$ $K^{+},$ $K^{0},$ $K^{* 0},$ $φ,$ $p$ and $Λ^{0}$ in hadronic $Z^{0}$ decays Abe, K.; Abe, K.; Abe, T. Physical Review D, Vol. 59, Issue 5 https://doi.org/10.1103/PhysRevD.59.052001	journal	January 1999
Strangeness production at low Q 2 in deep-inelastic ep scattering at HERA Aaron, F. D.; Alexa, C.; Andreev, V. The European Physical Journal C, Vol. 61, Issue 2 https://doi.org/10.1140/epjc/s10052-009-0995-1	journal	April 2009
Separated structure functions for the exclusive electroproduction of $K^{+} Λ$ and $K^{+} Σ^{0}$ final states Ambrozewicz, P.; Carman, D. S.; Feuerbach, R. J. Physical Review C, Vol. 75, Issue 4 https://doi.org/10.1103/PhysRevC.75.045203	journal	April 2007
The CEBAF large acceptance spectrometer (CLAS) Mecking, B. A.; Adams, G.; Ahmad, S. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 503, Issue 3 https://doi.org/10.1016/S0168-9002(03)01001-5	journal	May 2003
Deeply inelastic pions in the exclusive reaction $p (e, e^{'} π^{+}) n$ above the resonance region Kaskulov, Murat M.; Gallmeister, Kai; Mosel, Ulrich Physical Review D, Vol. 78, Issue 11 https://doi.org/10.1103/PhysRevD.78.114022	journal	December 2008
Measurement of the Light Antiquark Flavor Asymmetry in the Nucleon Sea Hawker, E. A.; Awes, T. C.; Beddo, M. E. Physical Review Letters, Vol. 80, Issue 17 https://doi.org/10.1103/PhysRevLett.80.3715	journal	April 1998
Flavor Asymmetry of the Light Quark Sea from Semi-inclusive Deep-Inelastic Scattering Ackerstaff, K.; Airapetian, A.; Akopov, N. Physical Review Letters, Vol. 81, Issue 25 https://doi.org/10.1103/PhysRevLett.81.5519	journal	December 1998