Date

Subject_areas

Properties of hadronic final states in diffractive deep inelastic ep scattering at HERA

The ZEUS collaboration Chekanov, S. ; Derrick, M. ; Krakauer, D. ; et al.
Phys.Rev. D65 (2002) 052001, 2002.
Inspire Record 560352 DOI 10.17182/hepdata.46869

Characteristics of the hadronic final state of diffractive deep inelastic scattering events, ep -> eXp, were studied in the kinematic range 4 < M_X < 35 GeV, 4 < Q^2 < 150 GeV^2, 70 < W < 250 GeV and 0.0003 < x_pom < 0.03 with the ZEUS detector at HERA using an integrated luminosity of 13.8 pb^{-1}. The events were tagged by identifying the diffractively scattered proton using the leading proton spectrometer. The properties of the hadronic final state, X, were studied in its center-of-mass frame using thrust, thrust angle, sphericity, energy flow, transverse energy flow and ``seagull'' distributions. As the invariant mass of the system increases, the final state becomes more collimated, more aligned and more asymmetric in the average transverse momentum with respect to the direction of the virtual photon. Comparisons of the properties of the hadronic final state with predictions from various Monte Carlo model generators suggest that the final state is dominated by qqg states at the parton level.

16 data tables

Thrust distribution for a DIS hadronic final state mass between 11 and 17.8GeV.

Thrust distribution for a DIS hadronic final state mass between 17.8 and 27.7 GeV.

Sphericity distribution for a DIS hadronic final state mass between 11 and 17.8 GeV.

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Experimental study of b quark jets in e+ e- annihilation at TRISTAN

The TOPAZ collaboration Nagai, K. ; Enomoto, R. ; Abe, T. ; et al.
Phys.Lett. B278 (1992) 506-510, 1992.
Inspire Record 333342 DOI 10.17182/hepdata.29230
4 data tables

No description provided.

No description provided.

Mean values of jet properties for b-jet sample.

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A Study of multi - jet events at the CERN anti-p p collider and a search for double parton scattering

The UA2 collaboration Alitti, J. ; Ambrosini, G. ; Ansari, R. ; et al.
Phys.Lett. B268 (1991) 145-154, 1991.
Inspire Record 317817 DOI 10.17182/hepdata.29361
3 data tables

Data requested from authors.

Uncorrected cross sections.

Upper limit to DPS contribution to 4JET production.


First Measurements of Hadronic Decays of the $Z$ Boson

The MARK-II collaboration Abrams, G.S. ; Adolphsen, Chris ; Aleksan, R. ; et al.
Phys.Rev.Lett. 63 (1989) 1558, 1989.
Inspire Record 282670 DOI 10.17182/hepdata.20044
5 data tables

Corrected event shape distributions.

Corrected event shape distributions.

Corrected event shape distributions.

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Comparison of Light Quark and Charm Quark Fragmentation

Kesten, P. ; Akerlof, C. ; Bonvicini, G. ; et al.
Phys.Lett. B161 (1985) 412-416, 1985.
Inspire Record 17116 DOI 10.17182/hepdata.30349
3 data tables

Charm Quark Jet Trigger. Characteristics of Jet Opposite the Trigger Jet.

Light Quark Jet Trigger. Characteristics of Jet Opposite the Trigger Jet.

No description provided.


Comparison of e+ e- Annihilation with QCD and Determination of the Strong Coupling Constant

The TASSO collaboration Brandelik, R. ; Braunschweig, W. ; Gather, K. ; et al.
Phys.Lett. B94 (1980) 437-443, 1980.
Inspire Record 153511 DOI 10.17182/hepdata.5489
7 data tables

No description provided.

No description provided.

No description provided.

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Observed particle PT with respect to jet axis for events with three or more detected charged particles.

No description provided.

No description provided.

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Study of Quark Fragmentation at 29-GeV: Global Jet Parameters and Single Particle Distributions

Bender, D. ; Derrick, M. ; Fernandez, E. ; et al.
Phys.Rev. D31 (1985) 1, 1985.
Inspire Record 201482 DOI 10.17182/hepdata.23581
25 data tables

New values supplied 6.7.87 by M.Derrick.

No description provided.

New values supplied 6.7.87 by M. Derrick.

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Jet Production and Fragmentation in e+ e- Annihilation at 12-GeV to 43-GeV

The TASSO collaboration Althoff, M. ; Braunschweig, W. ; Kirschfink, F.J. ; et al.
Z.Phys. C22 (1984) 307-340, 1984.
Inspire Record 195333 DOI 10.17182/hepdata.16272
14 data tables

R VALUES BELOW 32.5 GEV ARE IDENTICAL TO THOSE GIVEN IN BRANDELIK ET AL., PL 113B, 499 (1982).

No description provided.

CHARGED PARTICLE MULTIPLICITY DISTRIBUTIONS.

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Measurement of Inclusive $\gamma$ and $\pi^0$ Spectra and a Comparison of the Neutral and Charged Components in Hadronic Events in $e^+ e^-$ Annihilation at 34-{GeV}

The CELLO collaboration Behrend, H.J. ; Chen, C. ; Fenner, H. ; et al.
Z.Phys. C14 (1982) 189, 1982.
Inspire Record 177212 DOI 10.17182/hepdata.16411
2 data tables

No description provided.

No description provided.


Energy Dependence of Jet Measures in $e^+ e^-$ Annihilation

The PLUTO collaboration Berger, Christoph ; Genzel, H. ; Grigull, R. ; et al.
Z.Phys. C12 (1982) 297, 1982.
Inspire Record 169193 DOI 10.17182/hepdata.16424
12 data tables

DIFFERENTIAL THRUST DISTRIBUTIONS WHERE THRUST IS MAX(SUM(ABS(PLONG))/SUM(ABS(P))).

MEAN THRUST VALUES AS A FUNCTION OF CM ENERGY.

DIFFERENTIAL SPERICITY DISTRIBUTIONS WHERE SPHERICITY IS 3/2*MIN(SUM(PT**2)/SUM(ABS(P))).

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TOPOLOGY AND CHARGED MULTIPLICITY OF HADRONIC EVENTS IN THE ENERGY REGION OF THE UPSILON AND UPSILON' RESONANCES. (IN GERMAN)

Schwarz, Andreas S. ;
PhD Thesis, 1981.
Inspire Record 171276 DOI 10.17182/hepdata.43836
2 data tables

OBSERVED, UNCORRECTED, AVERAGE VALUES FOR SPHERICITY AND THRUST.

AVERAGE CHARGED MULTIPLICITY - SEE B. NICZYPORUK ET AL., ZP C9, 1 (1981).