HEPData Search

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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

Table 1

CHI distribution for mass bin 340 to 520 GeV.

Table 2

CHI distribution for mass bin 520 to 800 GeV.

Table 3

CHI distribution for mass bin 800 to 1200 GeV.

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Open charm yields in d + Au collisions at s(NN)**(1/2) = 200-GeV.

The STAR collaboration Adams, J. ; Aggarwal, M.M. ; Ahammed, Z. ; et al.

Phys.Rev.Lett. 94 (2005) 062301, 2005.

Inspire Record 653868 DOI 10.17182/hepdata.43117

Mid-rapidity open charm spectra from direct reconstruction of $D^{0}$($\bar{D^0}$)$\to K^{\mp}\pi^{\pm}$ in d+Au collisions and indirect electron/positron measurements via charm semileptonic decays in p+p and d+Au collisions at \srt = 200 GeV are reported. The $D^{0}$($\bar{D^0}$) spectrum covers a transverse momentum ($p_T$) range of 0.1 $<p_T<$ 3 \GeVc whereas the electron spectra cover a range of 1 $<p_T<$ 4 GeV/$c$. The electron spectra show approximate binary collision scaling between p+p and d+Au collisions. From these two independent analyses, the differential cross section per nucleon-nucleon binary interaction at mid-rapidity for open charm production from d+Au collisions at RHIC is $d\sigma^{NN}_{c\bar{c}}/dy$=0.30$\pm$0.04 (stat.)$\pm$0.09(syst.) mb. The results are compared to theoretical calculations. Implications for charmoniumm results in A+A collisions are discussed.

8 data tables

Table 1

Inclusive electrons yield versus transverse momentum in D+AU collisions Data points at PT = 2.2, 2.7 and 3.5 GeV/c was obtained using only the TPC (Time Projection Chamber) and cover a pseudo-rapidity range of -1<eta<1, while other points were obtained using both a prototypeTime-of-Flight System and the TPC and cover a pseudo-rapidity range of -1<eta<0.

Table 2

Inclusive electrons yield versus transverse momentum in P+P collisions.

Table 3

D0 yield versus transverse momentum in D+AU collisions.

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PRODUCTION OF LAMBDA HYPERONS AND K MESONS IN CUMULATIVE p C INTERACTIONS AT 10-GeV/c

Armutliisky, D. ; Bekmirzaev, R.N. ; Gasparian, A.P. ; et al.

Sov.J.Nucl.Phys. 47 (1988) 473, 1988.

Inspire Record 247873 DOI 10.17182/hepdata.38884

None

8 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Multiplicity, Momentum and Angular Distributions of Protons From the Interactions of $P$, $D$, $\alpha$ and C With Carbon at 4.2-{GeV}/c/nucleon Momentum. Alma-ata-baku-belgrade-bucharest-cracow-dubna-kishinev-leipzig- Moscow-prague-samarkand-sofia-tashkent-tbili

Armutliiski, D. ; Bogdanovic, J. ; Didenko, L.A. ; et al.

Z.Phys.A 328 (1987) 455-461, 1987.

Inspire Record 255393 DOI 10.17182/hepdata.9501

None

17 data tables

Table 1

No description provided.

Table 2

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Table 3

No description provided.

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LAMBDA AND K0(S) PRODUCTION IN INELASTIC AND MULTI - NUCLEON C C INTERACTIONS AT 4.2-GeV/c PER NUCLEON

Armutliisky, D.D. ; Bogdanovich, E. ; Gasparian, A.P. ; et al.

JINR-P1-85-220, 1985.

Inspire Record 216729 DOI 10.17182/hepdata.9643

None

10 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Multiplicity, Momentum and Angular Characteristics of $\pi^-$ Mesons for $p$ C, $d$ C, $\alpha$ C and C C Interactions at 4.2-{GeV}/$c$ Per Nucleon

The Alma Ata-Baku-Belgrade-Bucharest-Dubna-Kishinev-Leipzig- Moscow-Prague-Samarkand-Sofiya-Tashkent-Tbilisi-Ulan Bator-Varna collaboration Agakishiev, G.N. ; Akhababian, N. ; Armutliisky, D. ; et al.

Z.Phys.C 27 (1985) 177, 1984.

Inspire Record 203342 DOI 10.17182/hepdata.1999

Light ion collisions with carbon target at 4.2 GeV/c/N are studied. Pion multiplicity distributions, momentum and angular spectra are analysed. These data are described in terms of models assuming independent interactions of nucleons from the projectile nucleus with the target.

18 data tables

Table 1

No description provided.

Table 2

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Table 3

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