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Azimuthally differential pion femtoscopy in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV

The ALICE collaboration Adamova, Dagmar ; Aggarwal, Madan Mohan ; Aglieri Rinella, Gianluca ; et al.
Phys.Rev.Lett. 118 (2017) 222301, 2017.
Inspire Record 1512303 DOI 10.17182/hepdata.77905

We present the first azimuthally differential measurements of the pion source size relative to the second harmonic event plane in Pb-Pb collisions at a center-of-mass energy per nucleon-nucleon pair of sNN=2.76  TeV. The measurements have been performed in the centrality range 0%–50% and for pion pair transverse momenta 0.2<kT<0.7  GeV/c. We find that the Rside and Rout radii, which characterize the pion source size in the directions perpendicular and parallel to the pion transverse momentum, oscillate out of phase, similar to what was observed at the Relativistic Heavy Ion Collider. The final-state source eccentricity, estimated via Rside oscillations, is found to be significantly smaller than the initial-state source eccentricity, but remains positive—indicating that even after a stronger expansion in the in-plane direction, the pion source at the freeze-out is still elongated in the out-of-plane direction. The 3+1D hydrodynamic calculations are in qualitative agreement with observed centrality and transverse momentum Rside oscillations, but systematically underestimate the oscillation magnitude.

56 data tables

The azimuthal dependence of $R_{out}^{2}$ as a function of $\Delta\varphi=\varphi_{\mathrm{pair}}-\Psi_{\mathrm EP,2}$ for the centrality 20--30% and different $k_{\mathrm{T}}$ ranges.

The azimuthal dependence of $R_{out}^{2}$ as a function of $\Delta\varphi=\varphi_{\mathrm{pair}}-\Psi_{\mathrm EP,2}$ for the centrality 20--30% and different $k_{\mathrm{T}}$ ranges.

The azimuthal dependence of $R_{out}^{2}$ as a function of $\Delta\varphi=\varphi_{\mathrm{pair}}-\Psi_{\mathrm EP,2}$ for the centrality 20--30% and different $k_{\mathrm{T}}$ ranges.

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System size and energy dependence of near-side di-hadron correlations

The STAR collaboration Agakishiev, G. ; Aggarwal, M.M. ; Ahammed, Z. ; et al.
Phys.Rev. C85 (2012) 014903, 2012.
Inspire Record 943192 DOI 10.17182/hepdata.77720

Two-particle azimuthal ($\Delta\phi$) and pseudorapidity ($\Delta\eta$) correlations using a trigger particle with large transverse momentum ($p_T$) in $d$+Au, Cu+Cu and Au+Au collisions at $\sqrt{s_{{NN}}}$ =\xspace 62.4 GeV and 200~GeV from the STAR experiment at RHIC are presented. The \ns correlation is separated into a jet-like component, narrow in both $\Delta\phi$ and $\Delta\eta$, and the ridge, narrow in $\Delta\phi$ but broad in $\Delta\eta$. Both components are studied as a function of collision centrality, and the jet-like correlation is studied as a function of the trigger and associated $p_T$. The behavior of the jet-like component is remarkably consistent for different collision systems, suggesting it is produced by fragmentation. The width of the jet-like correlation is found to increase with the system size. The ridge, previously observed in Au+Au collisions at $\sqrt{s_{{NN}}}$ = 200 GeV, is also found in Cu+Cu collisions and in collisions at $\sqrt{s_{{NN}}}$ =\xspace 62.4 GeV, but is found to be substantially smaller at $\sqrt{s_{{NN}}}$ =\xspace 62.4 GeV than at $\sqrt{s_{{NN}}}$ = 200 GeV for the same average number of participants ($ \langle N_{\mathrm{part}}\rangle$). Measurements of the ridge are compared to models.

40 data tables

Parameterizations of the transverse momentum dependence of the reconstruction efficiency of charged particles in the TPC in various collision systems, energies and centrality bins for the track selection cuts used in this analysis.

The raw correlation in $\Delta\eta$ for di-hadron correlations for 3 $<$ $p_T^{trigger}$ $<$ 6 GeV/$c$ and 1.5 GeV/$c$ $<$ $p_T^{associated}$ $<$ $p_T^{trigger}$ for 0-12% central \Au collisions for $|\Delta\phi|<$ 0.78 before and after the track merging correction is applied. The data have been reflected about $\Delta\eta$=0.

Sample correlations in $\Delta\eta$ ($|\Delta\phi|<$ 0.78) for 3 $<$ $p_T^{trigger}$ $<$ 6 GeV/$c$ and 1.5 GeV/$c$ $<$ $p_T^{associated}$ $<$ $p_T^{trigger}$ for 0-60% Cu+Cu at $\sqrt{s_{NN}}$ = 62.4 GeV, 0-80% Au+Au at $\sqrt{s_{NN}}$ = 62.4 GeV, 0-95% $d$+Au at $\sqrt{s_{NN}}$ = 200 GeV, 0-60% Cu+Cu at $\sqrt{s_{NN}}$ = 200 GeV, 40-80% Au+Au at $\sqrt{s_{NN}}$ = 200 GeV, and 0-12% central Au+Au at $\sqrt{s_{NN}}$ = 200 GeV. The data are averaged between positive and negative $\Delta\eta$. 5% systematic uncertainty due to track reconstruction efficiency not listed below.

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Investigation of Pion Correlations with Pions and Cumulative Baryons in Proton Nucleus Interactions at 7.5 GeV/ c

Vlasov, A.V. ;
No Journal Information, None.
Inspire Record 1395505 DOI 10.17182/hepdata.40020
2 data tables

No description provided.

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Factorial moments and correlations in meson - nucleus interactions at 250-GeV/c

The EHS/NA22 collaboration Botterweck, F. ; Charlet, M. ; Chliapnikov, P.V. ; et al.
Z.Phys. C51 (1991) 37-48, 1991.
Inspire Record 302022 DOI 10.17182/hepdata.40466
1 data table

No description provided.


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
8 data tables

No description provided.

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Correlation Functions of Cumulative Baryons in $p$ a and $\pi$ a Interactions at 3-{GeV}/$c$

Bayukov, Yu.D. ; Degtyarenko, P.V. ; Doroshkevich, E.A. ; et al.
Sov.J.Nucl.Phys. 52 (1990) 305-311, 1990.
Inspire Record 287254 DOI 10.17182/hepdata.40036
8 data tables

No description provided.

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

Vlasov, A.V. ; Gavrilov, V.B. ; Degtyarenko, P.V. ; et al.
No Journal Information, 1986.
Inspire Record 237962 DOI 10.17182/hepdata.40118
5 data tables

No description provided.

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Measurement of the correlation function of cumulative protons in proton nucleus interaction at 7.5-GeV/c

Bayukov, Yu.D. ; Vlasov, A.V. ; Gavrilov, V.B. ; et al.
Sov.J.Nucl.Phys. 50 (1989) 447-451, 1989.
Inspire Record 292914 DOI 10.17182/hepdata.17270
1 data table

No description provided.


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
4 data tables

No description provided.

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Correlations Among Particles Produced in Proton Interactions With Emulsion Nuclei at 800-{GeV}

Barbier, L.M. ; Jones, W.V. ; Wefel, J.P. ; et al.
Phys.Rev. D37 (1988) 1113, 1988.
Inspire Record 256580 DOI 10.17182/hepdata.3823

Correlations among the produced particles in interactions of 800-GeV protons with nuclei in photographic emulsion provide evidence for nonindependent production of the secondary particles. Assuming particle production in clusters, the analysis implies an average multiplicity of about 3 charged particles per cluster.

6 data tables

No description provided.

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IN THIS TABLE ETARAP(P=3)=ETARAP(P=4).

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CORRELATING CUMULATIVE PROTONS IN HADRON - NUCLEAR INTERACTIONS

Bayukov, Yu.D. ; Vlasov, A.V. ; Vorobev, L.S. ; et al.
No Journal Information, 1986.
Inspire Record 231057 DOI 10.17182/hepdata.40094
1 data table

No description provided.


Study of bose-einstein correlations in $e^+e^-$ annihilation at 29-GeV

The TPC/Two Gamma collaboration Aihara, H. ; Alston-Garnjost, M. ; Bakken, J.A. ; et al.
Phys.Rev. D31 (1985) 996, 1985.
Inspire Record 205870 DOI 10.17182/hepdata.23563
1 data table

No description provided.


RAPIDITY DISTRIBUTIONS OF CORRELATION FUNCTIONS FOR PAIR $\pi$ MESONS IN $K^{-} p$ INTERACTIONS AT 32-GeV/c

Bumazhnov, V.A. ; Babintsev, V.V. ; Bogolyubsky, M.Yu. ; et al.
Yad.Fiz. 40 (1984) 465-473, 1984.
Inspire Record 189811 DOI 10.17182/hepdata.10703
43 data tables

No description provided.

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A Search for Three Particle Rapidity Correlations in $K^- p$ Interactions at 32-{GeV}/$c$

The French-Soviet CERN-Soviet collaborations Bumazhnov, V.A. ; Gubaeva, M.M. ; Kruglov, N.S. ; et al.
Sov.J.Nucl.Phys. 32 (1980) 528-532, 1980.
Inspire Record 144640 DOI 10.17182/hepdata.18034
5 data tables

No description provided.

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PAIR PRODUCTION OF PIONS WITH SYMMETRIC MOMENTA IN THE RANGE 0.5-GeV/c <= P(T) <= 2.0-GeV/c in 70-GeV p p COLLISIONS

Abramov, V.V. ; Baldin, B.Yu. ; Buzulutskov, A.F. ; et al.
Phys.Lett. B112 (1982) 170-172, 1982.
Inspire Record 169450 DOI 10.17182/hepdata.41219

The invariant cross-section slope of the pp→ π + π − +X process as a function of p T is found to have a break near 1 GeV/ c . Fitting the cross section by a sum of two exponents gives the values of powers (12.3±0.9)(GeV/ c ) −1 and (8.7±0.6)(GeV/ c ) −1 . The experimental points at p T ⩾1 GeV/ c are significantly higher than predictions based on hard scattering models such as QCD and CIM.

2 data tables

DATA ON D6(SIG) OBTAINED FROM MEASURED RCORR AND DATA ON SINGLE PARTICLE SPECTRA FROM ABRAMOV.V. ET AL, YF 31, 973, 1980.

No description provided.


Inclusive and Semiinclusive Two Pion Correlations in $p p$ Collisions at 69-GeV/c

The French-Soviet collaboration Derre, J. ; Jabiol, M.A. ; Otwinowski, S. ; et al.
Nuovo Cim. A33 (1976) 721, 1976.
Inspire Record 99995 DOI 10.17182/hepdata.8917
44 data tables

No description provided.

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Two Particle Correlations in Inclusive and Semiinclusive pi- p Reactions at 200-GeV/c

Biswas, N.N. ; Bishop, J.M. ; Cason, N.M. ; et al.
Phys.Rev.Lett. 35 (1975) 1059, 1975.
Inspire Record 2906 DOI 10.17182/hepdata.3351
12 data tables

No description provided.

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Correlations Between High Momentum Secondaries in $p p$ Collisions at $\sqrt{s}=44$.7-{GeV} and 62.3-{GeV}

Bobbink, G.J. ; van Driel, M.A. ; Erne, F.C. ; et al.
Nucl.Phys. B204 (1982) 173-188, 1982.
Inspire Record 177179 DOI 10.17182/hepdata.34080
13 data tables

No description provided.

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Correlations of Secondaries in Events with a Forward Negative Hadron at the ISR

Amaldi, U. ; Bartel, W. ; Cocconi, G. ; et al.
Phys.Lett. B58 (1975) 206-212, 1975.
Inspire Record 98549 DOI 10.17182/hepdata.27812
6 data tables

No description provided.

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Correlations of Secondaries in Events with a Forward Neutron at the ISR

Amaldi, U. ; Bartel, W. ; Cocconi, G. ; et al.
Phys.Lett. B58 (1975) 213-218, 1975.
Inspire Record 98548 DOI 10.17182/hepdata.27791
4 data tables

No description provided.

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