Charm-anticharm asymmetries in high energy photoproduction

P. L. Frabetti, H. W.K. Cheung, J. P. Cumalat, C. Dallapiccola, J. F. Ginkel, W. E. Johns, M. S. Nehring, J. N. Butler, S. Cihangir, I. Gaines, P. H. Garbincius, L. Garren, S. A. Gourlay, D. J. Harding, P. Kasper, A. Kreymer, P. Lebrun, S. Shukla, M. Vittone, S. BiancoF. L. Fabbri, S. Sarwar, A. Zallo, R. Culbertson, R. W. Gardner, R. Greene, J. Wiss, G. Alimonti, G. Bellini, M. Boschini, D. Brambilla, B. Caccianiga, L. Cinquini, M. Di Corato, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, E. Meroni, L. Moroni, D. Pedrini, L. Perasso, F. Prelz, A. Sala, S. Sala, D. Torretta, D. Buchholz, D. Claes, B. Gobbi, B. O'Reilly, J. M. Bishop, N. M. Cason, C. J. Kennedy, G. N. Kim, T. F. Lin, D. L. Puseljic, R. C. Ruchti, W. D. Shephard, J. A. Swiatek, Z. Y. Wu, V. Arena, G. Boca, C. Castoldi, G. Gianini, S. P. Ratti, C. Riccardi, L. Viola, P. Vitulo, A. Lopez, G. P. Grim, V. S. Paolone, P. M. Yager, J. R. Wilson, P. D. Sheldon, F. Davenport, G. R. Blackett, K. Danyo, M. Pisharody, T. Handler, B. G. Cheon, J. S. Kang, K. Y. Kim

Research output: Contribution to journalArticlepeer-review

Abstract

We report measurements of charm particle production asymmetries from the Fermilab photoproduction experiment E687. An asymmetry in the rate of production of charm versus anticharm particles is expected to arise primarily from fragmentation effects. We observe statistically significant asymmetries in the photoproduction of D+, D*+ and D0 mesons and find small (but statistically weak) asymmetries in the production of the D+s meson and the A+c baryon. Our inclusive photoproduction asymmetries are compared to predictions from nonperturbative models of charm quark fragmentation.

Original languageEnglish (US)
Pages (from-to)222-232
Number of pages11
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume370
Issue number1-2
DOIs
StatePublished - Mar 7 1996

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Charm-anticharm asymmetries in high energy photoproduction'. Together they form a unique fingerprint.

Cite this