HEPData Search

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D* production in deep inelastic scattering at HERA.

The ZEUS collaboration Breitweg, J. ; Derrick, M. ; Krakauer, D. ; et al.

Phys.Lett.B 407 (1997) 402-418, 1997.

Inspire Record 443964 DOI 10.17182/hepdata.44585

This paper presents measurements of D^{*\pm} production in deep inelastic scattering from collisions between 27.5 GeV positrons and 820 GeV protons. The data have been taken with the ZEUS detector at HERA. The decay channel $D^{*+}\to (D^0 \to K^- \pi^+) \pi^+ $ (+ c.c.) has been used in the study. The $e^+p$ cross section for inclusive D^{*\pm} production with $5

11 data tables

Table 1

No description provided.

Table 2

Integrated charm cross sections in two Q**2 regions.

Table 3

Distribution of the fractional momentum of the D* in the gamma*-p system.

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Inclusive jet production in photon-photon collisions at s**(1/2) = 130-GeV and 136-GeV

The OPAL collaboration Ackerstaff, K. ; Alexander, G. ; Allison, John ; et al.

Z.Phys.C 73 (1997) 433-442, 1997.

Inspire Record 424635 DOI 10.17182/hepdata.47713

The inclusive one- and two-jet production cross-sections are measured in collisions of quasi-real photons radiated from the LEP beams at e+e− centre-of-mass energies $\sqrt{s}_{\rm ee}=130$ and 136 GeV using the OPAL detector at LEP. Hard jets are reconstructed using a cone jet finding algorithm. The differential jet cross-sections ${\rm d}\sigma /{\rm d}E_{T}^{\rm jet}$ are compared to next-to-leading order perturbative QCD calculations. Transverse energy flows in jets are studied separately for direct and resolved two-photon events.

4 data tables

Table 1

Inclusive one-jet cross section.

Table 2

One-jet rapidity distribution.

Table 3

Inclusive two-jet cross section.

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Inclusive charged particle cross-sections in photoproduction at HERA

The H1 collaboration Abt, I. ; Ahmed, T. ; Andreev, V. ; et al.

Phys.Lett.B 328 (1994) 176-186, 1994.

Inspire Record 372256 DOI 10.17182/hepdata.45105

Cross sections are presented for the inclusive production of charged particles measured in electron-proton collisions at low Q 2 with the H1 detector at HERA. The transverse momentum distribution extends up to 8 GeV/ c . Its shape is found to be harder than that observed in p p collisions at comparable centre-of-mass energies √S γp ≈ √S p p ≈ 200 GeV , and also harder than in γp collisions at lower energies √ S γp ≈ 18 GeV. Results from quantum chromodynamics (QCD) calculations agree with the measured transverse momentum and pseudorapidity cross sections.

2 data tables

Table 1

No description provided.

Table 2

No description provided.