Search for Quark Contact Interactions in Dijet Angular Distributions in pp Collisions at sqrt(s) = 7 TeV Measured with the ATLAS Detector

The ATLAS collaboration Aad, G. ; Abbott, B. ; Abdallah, J. ; et al.
Phys.Lett.B 694 (2011) 327-345, 2011.
Inspire Record 871487 DOI 10.17182/hepdata.57022

Dijet angular distributions from the first LHC pp collisions at center-of-mass energy sqrt(s) = 7 TeV have been measured with the ATLAS detector. The dataset used for this analysis represents an integrated luminosity of 3.1 pb-1. Dijet $\chi$ distributions and centrality ratios have been measured up to dijet masses of 2.8 TeV, and found to be in good agreement with Standard Model predictions. Analysis of the $\chi$ distributions excludes quark contact interactions with a compositeness scale $\Lambda$ below 3.4 TeV, at 95% confidence level, significantly exceeding previous limits.

5 data tables

CHI distribution for mass bin 340 to 520 GeV.

CHI distribution for mass bin 520 to 800 GeV.

CHI distribution for mass bin 800 to 1200 GeV.

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Search for New Particles in Two-Jet Final States in 7 TeV Proton-Proton Collisions with the ATLAS Detector at the LHC

The ATLAS collaboration Aad, G. ; Abbott, B. ; Abdallah, J. ; et al.
Phys.Rev.Lett. 105 (2010) 161801, 2010.
Inspire Record 865423 DOI 10.17182/hepdata.57036

A search for new heavy particles manifested as resonances in two-jet final states is presented. The data were produced in 7 TeV proton-proton collisions by the Large Hadron Collider (LHC) and correspond to an integrated luminosity of 315 nb^-1 collected by the ATLAS detector. No resonances were observed. Upper limits were set on the product of cross section and signal acceptance for excited-quark (q*) production as a function of q* mass. These exclude at the 95% CL the q* mass interval 0.30 < mq* < 1.26 TeV, extending the reach of previous experiments.

2 data tables

The dijet mass distribution (NUMBER OF EVENTS).

95 PCT CL upper limit of the cross section x acceptance.


Charged particle multiplicity distributions in Z0 hadronic decays

The DELPHI collaboration Abreu, P. ; Adam, W. ; Adami, F. ; et al.
Z.Phys.C 50 (1991) 185-194, 1991.
Inspire Record 301657 DOI 10.17182/hepdata.15028

This paper presents an analysis of the multiplicity distributions of charged particles produced inZ0 hadronic decays in the DELPHI detector. It is based on a sample of 25364 events. The average multiplicity is <nch>=20.71±0.04(stat)±0.77(syst) and the dispersionD=6.28±0.03(stat)±0.43(syst). The data are compared with the results at lower energies and with the predictions of phenomenological models. The Lund parton shower model describes the data reasonably well. The multiplicity distributions show approximate KNO-scaling. They also show positive forward-backward correlations that are strongest in the central region of rapidity and for particles of opposite charge.

5 data tables

Charged particle multiplicity distribution for the raw data in full phase space.

Charged particle multiplicity distribution for full phase space. Errors include systematics. A 2 pct correction for excess electrons from photon conversions is not included. The first two points, at N=2 and 4, were not measured but taken from the Lund PS model.

Charged particle multiplicity distribution for single hemisphere. Errors include systematics. A 2 pct correction for excess electrons from photon conversions is not included.

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Two Particle Correlations and Regions of Proton Emittance Regions in $p$ Ta Interactions at $p=10$-{GeV}/$c$

Agakishiev, G.N. ; Armutliisky, D.D. ; Akhababian, N.O. ; et al.
Sov.J.Nucl.Phys. 47 (1988) 822, 1988.
Inspire Record 251053 DOI 10.17182/hepdata.9905

None

3 data tables

No description provided.

No description provided.

BACKGROUND DISTRIBUTION WAS OBTAINED BY USING PROTONS FROM DIFFERENT EVENTS.


MULTIPLICITY CORRELATIONS BETWEEN CHARGED PARTICLES IN THE FORWARD AND BACKWARD HEMISPHERES IN THE cms OF pi- p INTERACTIONS AT 40-GeV/c

Grishin, V.G. ; Didenko, L.A. ; Kuznetsov, A.A. ; et al.
Sov.J.Nucl.Phys. 43 (1986) 388, 1986.
Inspire Record 216725 DOI 10.17182/hepdata.2575

None

24 data tables

No description provided.

No description provided.

No description provided.

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NEUTRAL CURRENTS IN THE ANTI-NEUTRINO EXPERIMENT AT THE 15-FT BUBBLE CHAMBER

Gorichev, P.A. ; Efremenko, V.I. ; Kliger, G.K. ; et al.
Sov.J.Nucl.Phys. 39 (1984) 396, 1984.
Inspire Record 191969 DOI 10.17182/hepdata.10146

None

7 data tables

Axis error includes +- 0.0/0.0 contribution (?////NOT GIVEN).

Axis error includes +- 0.0/0.0 contribution (?////NOT GIVEN).

Axis error includes +- 0.0/0.0 contribution (?////NOT GIVEN).

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INVESTIGATION OF EFFECTS OF PION IDENTITY PRODUCED IN pi- p INTERACTIONS AT 40-GeV/c

Angelov, N.S. ; Akhababian, N.O. ; Grishin, V.G. ; et al.
Sov.J.Nucl.Phys. 35 (1982) 699, 1982.
Inspire Record 167521 DOI 10.17182/hepdata.39159

None

4 data tables

No description provided.

No description provided.

No description provided.

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SOURCES OF LEADING PIONS IN pi+ p AND pi- p INTERACTIONS AT 16-GeV/c AND 40-GeV/c

Becker, L. ; Grishin, V.G. ; Kvatadze, R.A. ;
Sov.J.Nucl.Phys. 35 (1982) 543, 1982.
Inspire Record 166978 DOI 10.17182/hepdata.39232

None

10 data tables

P=4 IS 'LEADING'.

P=5 IS 'LEADING'.

P=5 IS 'LEADING'.

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Space-time Characteristics of Radiation Region of Secondary Negative Pions, Produced in $\pi^- p$ Interactions at 40-{GeV}/$c$

Angelov, N. ; Akhababian, N. ; Grishin, V.G. ; et al.
Yad.Fiz. 35 (1982) 76, 1982.
Inspire Record 166105 DOI 10.17182/hepdata.39205

None

1 data table

No description provided.


DELTA (1236) PRODUCTION IN ANTI-NEUTRINO n ---> mu+ n pi- REACTION AT HIGH-ENERGIES

Efremenko, V.I. ; Fedotov, A.V. ; Gorichev, P.A. ; et al.
ITEP-83-1981, 1981.
Inspire Record 167553 DOI 10.17182/hepdata.40191

None

5 data tables

No description provided.

No description provided.

No description provided.

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