Inclusive D∗± production in photon-photon collisions

Alston‐Garnjost, M.; Avery, R. E.; Barker, A. R.; Bauer, D. A.; Bay, A.; Buijs, A.; Belcinski, R.; Bingham, H. H.; Bloom, E. D.; Buchanan, C.; Caldwell, D. O.; Chao, H. Y.; Chun, S.; Clark, A. R.; Crane, D.; Dahl, O. I.; Daoudi, M.; Eastman, J. J.; Eberhard, Philippe; Edberg, T. K.; Eisner, A. M.; Erné, F.C.; Fairfield, K.; Godfrey, G.; Hauptman, J. M.; Hofmann, W.; Kenney, Robert W.; Khacheryan, S.; Knöpfle, K. T.; Kofler, R.R.; Lambert, D.; Langeveld, W. G.J.; Layter, J. G.; Lin, W.; Linde, F.; Loken, S.; Lu, A.; Lynch, G.; Lys, J.; Madaras, R. J.; Marsiske, H.; Masek, G.; Mathis, L.; Miller, E. S.; Nicol, N. A.; Nygren, D. R.; Oddone, P.J.; Oyang, Y. T.; Paar, H. P.; Palounek, A. P.T.; Park, S. K.; Pellett, D.; Pripstein, M.; Roman, M.; Ross, R. R.; Sens, J.C.; Shapiro, G.; Shen, B. C.; Steinman, J. S.; Stephens, R. W.; Stevenson, M. L.; Stork, D. H.; Strauss, M. G.; Sullivan, M. K.; Toutounchi, S.; Vernon, W.; Wang, E. M.; Wang, Y. X.; Wenzel, W. A.; Yamamoto, H.; Yellin, S.; Yost, G.P.; Zapalac, G.; Zeitlin, C.

doi:10.1016/0370-2693(90)90578-t

Cited by 27 publications

(4 citation statements)

References 21 publications

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“…The data are: L3 [43], triangles; ALEPH [47], stars; DELPHI [48], diamonds; OPAL [44], boxes. The results at lower energies (crosses) are from [49,50,51,52]. Open symbols refer to preliminary results.…”

Section: γ-γ Reactionsmentioning

confidence: 99%

Comprehensive approach to structure functions

Donnachie

Dosch²

2001

Phys. Rev. D

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We present a model based on a dipole picture with a hard and a soft pomeron in which large dipoles couple to the soft pomeron and small dipoles couple to the hard pomeron. The parameters in the model are fixed by protonproton scattering and the proton structure function F 2 (x, Q 2 ). The model is then applied successfully to the proton charm structure function F c 2 (x, Q 2 ), the proton longitudinal structure function F L 2 (x, Q 2 ), J/ψ photoproduction, deep virtual Compton scattering γ * p → γp, the real photon-proton total cross section σ Tot γp (s), the real photon-photon total cross section σ Tot γγ (s), and the photon structure function F γ 2 (x, Q 2 ). Differences between our predictions and and data on charm production in real photon-photon interactions and the γ * γ * cross section σ Tot γγ (s) are discussed.

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Section: γ-γ Reactionsmentioning

confidence: 99%

Comprehensive approach to structure functions

Donnachie

Dosch²

2001

Phys. Rev. D

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“…The reaction e + e − → e + e − D * ± X has been thoroughly studied experimentally. The existence of the D * ± has been inferred either from direct reconstruction [4,5,6] or from unfolding the distribution of soft pions [7,8] resulting from its decay. In addition, measurements have been made using soft leptons [9,10] and kaons [3] to tag the charm.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, measurements have been made using soft leptons [9,10] and kaons [3] to tag the charm. JADE [4] and TPC/Two-Gamma [5] have performed experimental studies of the reaction e + e − → e + e − D * ± X with one outgoing lepton tagged at low average value Q 2 of the momentum transfer squared of the tagged lepton (below 1 (GeV/c) 2 ). TOPAZ [7] has performed a study as well at somewhat larger Q 2 .…”

Section: Introductionmentioning

confidence: 99%

Heavy-quark production in eγ scattering

Laenen

Riemersma²

1996

Physics Letters B

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Open heavy flavour production at e + e − colliders in deeply inelastic eγ scattering has an interesting feature: the structure function F 2 (x, Q 2 ) for this process is calculable for x > 0.01, and is essentially proportional to the gluon density in the photon for smaller x values. We give estimates for event rates at LEP2 and a Next Linear Collider in x, Q 2 bins, and present differential distributions in the transverse momentum and rapidity of the heavy quark for the case of charm. We include all next-to-leading-order QCD corrections, and find theoretical uncertainties are well under control.

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“…Studies of charm-meson production should provide useful information concerning the gluon density in a photon, the current charm quark mass, and the intrinsic P T distribution of the partons in resolved photons. The statistics of the previous experiments were too poor to determine these parameters [12,13,14].…”

Section: Introductionmentioning

confidence: 99%