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Event-shape and multiplicity dependence of freeze-out radii in pp collisions at $\sqrt{{\textit s}}=7$ TeV

The ALICE collaboration
No Journal Information, 2019

Abstract (data abstract)
CERN-LHC. Comparison of measured and simulated opposite-sign pion pair correlation functions for high and low sphericity intervals. The C(q) in spherical events are relatively flat at unity, while the low sphericity correlation functions exhibit a very pronounced slope. This finding supports previous assumptions about the mini-jet origin of background correlations in interferometry analyses and demonstrates that PYTHIA describes two-pion correlations well in the absence of Bose-Einstein correlations.

  • Table 1

    Data from Figure 1

    10.17182/hepdata.91128.v1/t1

    Opposite-sign pion pair correlation functions in data for sphericity S_{T} < 0.3 (jet-like events).

  • Table 2

    Data from Figure 1

    10.17182/hepdata.91128.v1/t2

    Opposite-sign pion pair correlation functions in PYTHIA simulations for sphericity S_{T} < 0.3 (jet-like events).

  • Table 3

    Data from Figure 1

    10.17182/hepdata.91128.v1/t3

    Opposite-sign pion pair correlation functions in data for sphericity S_{T} > 0.7 (spherical events).

  • Table 4

    Data from Figure 1

    10.17182/hepdata.91128.v1/t4

    Opposite-sign pion pair correlation functions in PYTHIA simulations for sphericity S_{T} > 0.7 (spherical events).

  • Table 5

    Data from Figure 2

    10.17182/hepdata.91128.v1/t5

    Same-sign pion pair correlation functions in data for sphericity S_{T} < 0.3 (jet-like events).

  • Table 6

    Data from Figure 2

    10.17182/hepdata.91128.v1/t6

    Same-sign pion pair correlation functions for simulated events with sphericity S_{T} < 0.3 (jet-like events).

  • Table 7

    Data from Figure 2

    10.17182/hepdata.91128.v1/t7

    Same-sign pion pair correlation functions in data for sphericity S_{T} > 0.7 (spherical events).

  • Table 8

    Data from Figure 2

    10.17182/hepdata.91128.v1/t8

    Same-sign pion pair correlation functions for simulated events with sphericity S_{T} > 0.7 (spherical events).

  • Table 9

    Data from Figure 3

    10.17182/hepdata.91128.v1/t9

    Comparison of exponential and Gaussian fit results for $C^{QS}(q)$ functions in events with sphericity S_{T} < 0.3 (jet-like events).

  • Table 10

    Data from Figure 3

    10.17182/hepdata.91128.v1/t10

    Comparison of exponential and Gaussian fit results for $C^{QS}(q)$ functions in events with sphericity S_{T} > 0.7 (spherical events).

  • Table 11

    Data from Figure 4

    10.17182/hepdata.91128.v1/t11

    Measured 1D source radii as a function of pair k_{T} for spherical events with $<dN_{\textrm{ch}}/d\eta> = 5.3 \pm 2.2$ in...

  • Table 12

    Data from Figure 4

    10.17182/hepdata.91128.v1/t12

    Measured 1D source radii as a function of pair k_{T} for spherical events with $<dN_{\textrm{ch}}/d\eta> = 10.5 \pm 2.10$ in...

  • Table 13

    Data from Figure 4

    10.17182/hepdata.91128.v1/t13

    Measured 1D source radii as a function of pair k_{T} for spherical events with $<dN_{\textrm{ch}}/d\eta> = 14.9 \pm 2.3$ in...

  • Table 14

    Data from Figure 4

    10.17182/hepdata.91128.v1/t14

    Measured 1D source radii as a function of pair k_{T} for spherical events with $<dN_{\textrm{ch}}/d\eta> = 20.4 \pm 3.2$ in...

  • Table 15

    Data from Figure 4

    10.17182/hepdata.91128.v1/t15

    Measured 1D source radii as a function of pair k_{T} for jet-like events with $<dN_{\textrm{ch}}/d\eta> = 4.3 \pm 2.0$ in...

  • Table 16

    Data from Figure 4

    10.17182/hepdata.91128.v1/t16

    Measured 1D source radii as a function of pair k_{T} for jet-like events with $<dN_{\textrm{ch}}/d\eta> = 9.6 \pm 2.0$ in...

  • Table 17

    Data from Figure 4

    10.17182/hepdata.91128.v1/t17

    Measured 1D source radii as a function of pair k_{T} for jet-like events with $<dN_{\textrm{ch}}/d\eta> = 13.9 \pm 2.2$ in...

  • Table 18

    Data from Figure 4

    10.17182/hepdata.91128.v1/t18

    Measured 1D source radii as a function of pair k_{T} for jet-like events with $<dN_{\textrm{ch}}/d\eta> = 18.7 \pm 3.2$ in...

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