Onset of asymptotic scaling in deuteron photodisintegration

  • P. Rossi
  • , M. Mirazita
  • , F. Ronchetti
  • , E. De Sanctis
  • , G. Adams
  • , P. Ambrozewicz
  • , E. Anciant
  • , M. Anghinolfi
  • , B. Asavapibhop
  • , G. Audit
  • , H. Avakian
  • , H. Bagdasaryan
  • , J. P. Ball
  • , S. Barrow
  • , M. Battaglieri
  • , K. Beard
  • , M. Bektasoglu
  • , M. Bellis
  • , N. Benmouna
  • , B. L. Berman
  • W. Bertozzi, 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, D. S. Carman, B. Carnahan, S. Chen, P. L. Cole, D. Cords, P. Corvisiero, D. Crabb, H. Crannell, J. P. Cummings, R. De Vita, P. V. Degtyarenko, H. Denizli, L. Dennis, A. Deppman, K. V. Dharmawardane, K. S. Dhuga, C. Djalali, G. E. Dodge, D. Doughty, P. Dragovitsch, M. Dugger, S. Dytman, O. P. Dzyubak, H. Egiyan, K. S. Egiyan, L. Elouadrhiri, A. Empl, P. Eugenio, R. Fatemi, R. J. Feuerbach, J. Ficenec, T. A. Forest, H. Funsten, M. Gai, G. Gavalian, S. Gilad, G. P. Gilfoyle, K. L. Giovanetti, C. I.O. Gordon, K. Griffioen, M. Guidai, M. Guillo, L. Guo, V. Gyurjyan, C. Hadjidakis, R. S. Hakobyan, J. Hardie, D. Heddle, F. W. Hersman, K. Hicks, R. S. Kicks, M. Holtrop, J. Hu, C. E. Hyde-Wright, Y. Ilieva, M. M. Ito, D. Jenkins, H. S. Jo, K. Joo, J. D. Kellie, M. Khandaker, K. Y. Kim, K. Kim, W. Kim, A. Klein, F. J. Klein

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

We investigate the transition from the nucleon-meson to the quark-gluon description of the strong interaction using the photon energy dependence of the d(γ, p)n differential cross section for photon energies above 0.5 GeV and center-of-mass proton angles between 30° and 150°; A possible signature for this transition is the onset of cross-section s-11 scaling with the total energy squared, s, at some proton transverse momentum PT. The results show that the scaling has been reached for proton transverse momentum above about 1.1 GeV/c. This may indicate that the quark-gluon regime is reached above this momentum.

Original languageEnglish
Article number012301
JournalPhysical Review Letters
Volume94
Issue number1
DOIs
StatePublished - Jan 14 2005

ASJC Scopus subject areas

  • General Physics and Astronomy

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