Multi-particle azimuthal correlations in p-Pb and Pb-Pb collisions at the LHC

The ALICE collaboration Abelev, Betty Bezverkhny ; Adam, Jaroslav ; Adamova, Dagmar ; et al.
Phys.Rev.C 90 (2014) 054901, 2014.
Inspire Record 1300038 DOI 10.17182/hepdata.65710

Measurements of multi-particle azimuthal correlations (cumulants) for charged particles in p-Pb and Pb-Pb collisions are presented. They help address the question of whether there is evidence for global, flow-like, azimuthal correlations in the p-Pb system. Comparisons are made to measurements from the larger Pb-Pb system, where such evidence is established. In particular, the second harmonic two-particle cumulants are found to decrease with multiplicity, characteristic of a dominance of few-particle correlations in p-Pb collisions. However, when a $|\Delta \eta|$ gap is placed to suppress such correlations, the two-particle cumulants begin to rise at high-multiplicity, indicating the presence of global azimuthal correlations. The Pb-Pb values are higher than the p-Pb values at similar multiplicities. In both systems, the second harmonic four-particle cumulants exhibit a transition from positive to negative values when the multiplicity increases. The negative values allow for a measurement of $v_{2}\{4\}$ to be made, which is found to be higher in Pb-Pb collisions at similar multiplicities. The second harmonic six-particle cumulants are also found to be higher in Pb-Pb collisions. In Pb-Pb collisions, we generally find $v_{2}\{4\} \simeq v_{2}\{6\}\neq 0$ which is indicative of a Bessel-Gaussian function for the $v_{2}$ distribution. For very high-multiplicity Pb-Pb collisions, we observe that the four- and six-particle cumulants become consistent with 0. Finally, third harmonic two-particle cumulants in p-Pb and Pb-Pb are measured. These are found to be similar for overlapping multiplicities, when a $|\Delta\eta| > 1.4$ gap is placed.

42 data tables

No description provided.

No description provided.

No description provided.

More…

Investigation of the dynamics of hadron nucleus interactions at 40-GeV by using the features of neutral strange particles.

Akhobadze, K.G. ; Chikovani, L.D. ; Ioramashvili, E.Sh. ; et al.
Phys.Atom.Nucl. 61 (1998) 196-202, 1998.
Inspire Record 442181 DOI 10.17182/hepdata.17088

None

5 data tables

No description provided.

No description provided.

No description provided.

More…

MEASUREMENT OF CORRELATION FUNCTIONS OF THREE CUMULATIVE BARYONS

Vlasov, A.V. ; Degtyarenko, P.V. ; Doroshkevich, E.A. ; et al.
Sov.J.Nucl.Phys. 52 (1990) 312-315, 1990.
Inspire Record 263988 DOI 10.17182/hepdata.40056

None

8 data tables

No description provided.

No description provided.

No description provided.

More…

Size and Form of the Field of Hadron Nuclear Reactions. (In Russian)

Bayukov, Yu.D. ; Vlasov, A.V. ; Vorobev, L.S. ; et al.
Sov.J.Nucl.Phys. 50 (1989) 638-645, 1989.
Inspire Record 268364 DOI 10.17182/hepdata.40061

None

4 data tables

No description provided.

No description provided.

No description provided.

More…

MEASUREMENT OF THE CROSS-SECTION OF FORWARD COMPTON SCATTERING ON He-4 NUCLEI AT E (gamma) = 1.8-GeV + 3.8-GeV

Aleksanian, A.S. ; Babaian, G.E. ; Voskanian, A.V. ; et al.
Sov.J.Nucl.Phys. 45 (1987) 628, 1987.
Inspire Record 236051 DOI 10.17182/hepdata.18431

None

3 data tables

MODEL DEPENDENT ESTIMATION.

No description provided.

No description provided.


CORRELATION OF PROTONS AND DEUTERONS WITH DEUTERIUM IN PROTON - NUCLEUS INTERACTIONS

Vlasov, A.V. ; Gavrilov, V.B. ; Degtyarenko, P.V. ; et al.
ITEP-86-174, 1986.
Inspire Record 237962 DOI 10.17182/hepdata.40118

None

5 data tables

No description provided.

No description provided.

No description provided.

More…

CROSS-SECTION ASYMMETRY OF THE gamma n ---> pi- p REACTION BY POLARIZED PHOTONS IN THE THIRD AND FOURTH RESONANCE REGIONS

Adamian, F.V. ; Akopian, G.G. ; Galumian, P.I. ; et al.
EFI-722-37-84-YEREVAN, 1984.
Inspire Record 206944 DOI 10.17182/hepdata.18433

None

5 data tables

No description provided.

No description provided.

No description provided.

More…

ASSOCIATED PRODUCTION OF CUMULATIVE LAMBDA0 HYPERONS AND K0 MESONS

Leksin, G.A. ; Smirnitsky, A.V. ;
ITEP-121-1981, 1981.
Inspire Record 169778 DOI 10.17182/hepdata.40249

None

10 data tables

No description provided.

No description provided.

No description provided.

More…

Measurements of Cross-section Asymmetry by Polarized Photons and Models of Eta0 Meson Photoproduction in the Energy Range $E_\gamma = 1$-{GeV} to 2-{GeV}

Vartapetian, G.A. ; Piliposian, S.E. ;
Sov.J.Nucl.Phys. 32 (1980) 804, 1980.
Inspire Record 154948 DOI 10.17182/hepdata.18828

None

20 data tables

No description provided.

Axis error includes +- 16/16 contribution.

No description provided.

More…

ANALYSIS OF ANGULAR DEPENDENCE OF INCLUSIVE CROSS-SECTIONS FOR PRODUCTION OF PROTONS AND LIGHT IONS ON NUCLEI IN THE REGION OF TARGET FRAGMENTATION

Bayukov, Yu.D. ; Gavrilov, V.B. ; Efremenko, V.I. ; et al.
Sov.J.Nucl.Phys. 33 (1981) 94, 1981.
Inspire Record 154931 DOI 10.17182/hepdata.17816

None

1 data table

IN 'YN' OF THIS TABLE 'A' MEANS CHEMICAL WEIGHT OF TANTALUM NUCLEUS.