Summary
New results from the ZEUS and H1 experiments on the production of D*(2010) mesons and charm identification via its semi-leptonic decays are reported. The D* production is determined by measuring the reaction chain D*± → D0π ±s , D0 → K−π+ (and c.c.). The semi-leptonic results are obtained from the inclusive μ samples. Total D* and charm photoproduction (Q 2<4 GeV2) cross-section are presented for γp centre-of-mass energies ranging from 115 to 265 GeV. The results are compared with next-to-leading-order QCD calculations. Other decay modes of D0(D0 → K−π+π+π−), decays of other charmed hadrons and D* production in the deep inelastic regionQ 2>4 GeV2 are also shown.
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References
Ali A. et al., inProceedings of the HERA Workshop (DESY, Hamburg) 1987, p. 395.
van Woudenberg R. et al., inProceedings of the Workshop Physics at HERA (DESY, Hamburg) 1991, p. 739.
Witten E.,Nucl. Phys. B,120 (1977) 189;Owens J. F.,Phys. Rev. D,21 (1980) 54.
Drees M. andHalzen F.,Phys. Rev. Lett.,61 (1988) 275;Schuler G. A. andSjöstrand T.,Phys. Lett. B,300 (1993) 169.
Gordon L. E. andStorrow J. K.,Phys. Lett. B,291 (1992) 320;Bödeker D.,Phys. Lett. B,292 (1992) 164.
ZEUSCollaboration (M. Derrick et al.),Phys. Lett. B,297 (1992) 404.
ZEUSCollaboration (M. Derrick et al.),Phys. Lett. B,322 (1994) 287.
H1Collaboration (T. Ahmed et al.),Phys. Lett. B,297 (1992) 205.
ZEUSCollaboration (M. Derrick et al.),Phys. Lett. B,345 (1995) 576.
ZEUSCollaboration (M. Derrick et al.),Phys. Lett. B,349 (1995) 225.
Harnew N. et al., Nucl. Instrum. Methods A,279 (1989) 290;Foster B. et al., Nucl. Phys. B (Proc. Suppl.),32 (1993) 181;Nucl. Instrum. Methods A,338 (1994) 254.
Budnev V. M. et al., Phys. Rep. C,15 (1975) 181.
CIFCollaboration (M. S. Atiya et al.),Phys. Rev. Lett.,43 (1979) 414; BFPCollaboration (A. R. Clark et al.),Phys. Rev. Lett.,45 (1980) 682; SLAC HFPCollaboration (K. Abe et al.),Phys. Rev. D,30 (1984) 1; EMCCollaboration (M. Arneodo et al.),Z. Phys. C,35 (1987) 1; PECCollaboration (M. Adamovich et al.),Phys. Lett. B,187 (1987) 437; E691Collaboration (J. C. Anjos et al.),Phys. Rev. Lett.,65 (1990) 2503; NA-14′Collaboration (M. P. Alvarez et al.),Z. Phys. C,60 (1993) 53.
Frixione S., Mangano M. L., Nason P. andRidolfi G., private communication. See alsoNucl. Phys. B,412 (1994) 225 and CERN-TH.7292/94, GEF-TH-4/1994, to be published inNucl. Phys. B.
Martin A. D., Stirling W. J. andRoberts R. G.,Phys. Lett. B,306 (1993) 145.
Abromowicz H., Charchula K. andLevy A.,Phys. Lett. B,269 (1991) 458.
Glück M., Reya E. andVogt A.,Phys. Lett. B,306 (1993) 391.
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ZEUS Collaboration., H1 Collaboration. Observation of open-charm production in ep collisions at HERA. Nuov Cim A 109, 703–712 (1996). https://doi.org/10.1007/BF02731704
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DOI: https://doi.org/10.1007/BF02731704