Melissinos, A.C.
DSIG/DTHETA
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Study of hadronic final states from double tagged gamma gamma events at LEP.

The ALEPH collaboration Heister, A. ; Schael, S. ; Barate, R. ; et al.
CERN-EP-2003-025, 2003.
Inspire Record 619958 DOI 10.17182/hepdata.49702

The interaction of virtual photons is investigated using double tagged gammagamma events with hadronic final states recorded by the ALEPH experiment at e^+e^- centre-of-mass energies between 188 and 209 GeV. The measured cross section is compared to Monte Carlo models, and to next-to-leading-order QCD and BFKL calculations.

10 data tables
Table 1

Differential cross section as a function of the relative energy of the scattered electrons.

Table 2

Differential cross section as a function of the polar angle THETA of the scattered electrons.

Table 3

Differential cross section as a function of the virtuality Q**2 of the photons.

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Dijet production in charged and neutral current e+ p interactions at high Q**2.

The H1 collaboration Adloff, C. ; Andreev, V. ; Andrieu, B. ; et al.
Eur.Phys.J.C 19 (2001) 429-440, 2001.
Inspire Record 534736 DOI 10.17182/hepdata.46947

Jet production in charged and neutral current events in the kinematic range of Q^2 from 640 to 35000 GeV^2 is studied in deep-inelastic positron-proton scattering at HERA. The measured rate of multi-jet events and distributions of jet polar angle, transverse energy, dijet mass, and other dijet variables are presented. Using parton densities derived from inclusive DIS cross sections, perturbative QCD calculations in NLO are found to give a consistent description of both the neutral and charged current dijet production. A direct, model independent comparison of the jet distributions in charged and neutral current events confirms that the QCD dynamics of the hadronic final state is independent of the underlying electroweak scattering process.

9 data tables
Table 1

Rates of charged current events as a function of Q**2.

Table 2

Rates of neutral current events as a function of Q**2.

Table 3

Normalised distribution in Y2 for NC and CC dijet events. Y2 is the smallest scaled value of KT (KTJET**2/W**2) given by the combination of (2+1) jets. The +1 refers to the proton remnant jet.

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pi-Meson Production in 2.9-BeV p-p Collisions

Melissinos, A.C. ; Yamanouchi, T. ; Fazio, G.G. ; et al.
Phys.Rev. 128 (1962) 2373-2381, 1962.
Inspire Record 944979 DOI 10.17182/hepdata.26775

Detailed measurements of the production of charged π mesons in proton-proton collisions are reported. The observed results are compared with the "isobar" and "one-pion exchange" models and for single production are in agreement if only the "resonant" part of the π−p cross section is used and if the angular distribution cos16θ is introduced for the production of the N1* isobar. The effects of higher resonances are also considered.

4 data tables
Table 1

No description provided.

Table 2

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Table 3

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