Comprehensive results on the production of unidentified charged particles, $\pi^{\pm}$, K$^{\pm}$, K$^{0}_{\text{s}}$, K*(892)$^{0}$, p, $\bar{\text{p}}$, $\phi$(1020), $\Lambda$, $\bar{\Lambda}$, $\Xi^{-}$, $\bar{\Xi}^{+}$, $\Omega^{-}$ and $\bar{\Omega}^{+}$ hadrons in proton-proton (pp) collisions at $\sqrt{s}$ = 7 TeV at midrapidity ($|y| < 0.5$) as a function of charged-particle multiplicity density are presented. In order to avoid auto-correlation biases, the actual transverse momentum ($p_{\text{T}}$) spectra of the particles under study and the event activity are measured in different rapidity windows. In the highest multiplicity class, the charged-particle density reaches about 3.5 times the value measured in inelastic collisions. While the yield of protons normalized to pions remains approximately constant as a function of multiplicity, the corresponding ratios of strange hadrons to pions show a significant enhancement that increases with increasing strangeness content. Furthermore, all identified particle to pion ratios are shown to depend solely on charged-particle multiplicity density, regardless of system type and collision energy. The evolution of the spectral shapes with multiplicity and hadron mass shows patterns that are similar to those observed in p-Pb and Pb--Pb collisions at LHC energies. The obtained \pt\ distributions and yields are compared to expectations from QCD-based pp event generators as well as to predictions from thermal and hydrodynamic models. These comparisons indicate that traces of a collective, equilibrated system are already present in high-multiplicity pp collisions.
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Transverse momentum spectra of charged particles in V0M I multiplicity class
Table 2
Table from Figure 4
10.17182/hepdata.84282.v1/t2
Transverse momentum spectra of charged particles in V0M II multiplicity class
Table 3
Table from Figure 4
10.17182/hepdata.84282.v1/t3
Transverse momentum spectra of charged particles in V0M III multiplicity class
Table 4
Table from Figure 4
10.17182/hepdata.84282.v1/t4
Transverse momentum spectra of charged particles in V0M IV multiplicity class
Table 5
Table from Figure 4
10.17182/hepdata.84282.v1/t5
Transverse momentum spectra of charged particles in V0M V multiplicity class
Table 6
Table from Figure 4
10.17182/hepdata.84282.v1/t6
Transverse momentum spectra of charged particles in V0M VI multiplicity class
Table 7
Table from Figure 4
10.17182/hepdata.84282.v1/t7
Transverse momentum spectra of charged particles in V0M VII multiplicity class
Table 8
Table from Figure 4
10.17182/hepdata.84282.v1/t8
Transverse momentum spectra of charged particles in V0M VIII multiplicity class
Table 9
Table from Figure 4
10.17182/hepdata.84282.v1/t9
Transverse momentum spectra of charged particles in V0M IX multiplicity class
Table 10
Table from Figure 4
10.17182/hepdata.84282.v1/t10
Transverse momentum spectra of charged particles in V0M X multiplicity class
Table 11
Table from Figure 5
10.17182/hepdata.84282.v1/t11
Transverse momentum spectra of $\pi^{+} + \pi^{-}$ in V0M multiplicity class I
Table 12
Table from Figure 5
10.17182/hepdata.84282.v1/t12
Transverse momentum spectra of $\pi^{+} + \pi^{-}$ in V0M multiplicity class II
Table 13
Table from Figure 5
10.17182/hepdata.84282.v1/t13
Transverse momentum spectra of $\pi^{+} + \pi^{-}$ in V0M multiplicity class III
Table 14
Table from Figure 5
10.17182/hepdata.84282.v1/t14
Transverse momentum spectra of $\pi^{+} + \pi^{-}$ in V0M multiplicity class IV
Table 15
Table from Figure 5
10.17182/hepdata.84282.v1/t15
Transverse momentum spectra of $\pi^{+} + \pi^{-}$ in V0M multiplicity class V
Table 16
Table from Figure 5
10.17182/hepdata.84282.v1/t16
Transverse momentum spectra of $\pi^{+} + \pi^{-}$ in V0M multiplicity class VI
Table 17
Table from Figure 5
10.17182/hepdata.84282.v1/t17
Transverse momentum spectra of $\pi^{+} + \pi^{-}$ in V0M multiplicity class VII
Table 18
Table from Figure 5
10.17182/hepdata.84282.v1/t18
Transverse momentum spectra of $\pi^{+} + \pi^{-}$ in V0M multiplicity class VIII
Table 19
Table from Figure 5
10.17182/hepdata.84282.v1/t19
Transverse momentum spectra of $\pi^{+} + \pi^{-}$ in V0M multiplicity class IX
Table 20
Table from Figure 5
10.17182/hepdata.84282.v1/t20
Transverse momentum spectra of $\pi^{+} + \pi^{-}$ in V0M multiplicity class X
Table 21
Table from Figure 5
10.17182/hepdata.84282.v1/t21
Transverse momentum spectra of $K^{+} + K^{-}$ in V0M multiplicity class I
Table 22
Table from Figure 5
10.17182/hepdata.84282.v1/t22
Transverse momentum spectra of $K^{+} + K^{-}$ in V0M multiplicity class II
Table 23
Table from Figure 5
10.17182/hepdata.84282.v1/t23
Transverse momentum spectra of $K^{+} + K^{-}$ in V0M multiplicity class III
Table 24
Table from Figure 5
10.17182/hepdata.84282.v1/t24
Transverse momentum spectra of $K^{+} + K^{-}$ in V0M multiplicity class IV
Table 25
Table from Figure 5
10.17182/hepdata.84282.v1/t25
Transverse momentum spectra of $K^{+} + K^{-}$ in V0M multiplicity class V
Table 26
Table from Figure 5
10.17182/hepdata.84282.v1/t26
Transverse momentum spectra of $K^{+} + K^{-}$ in V0M multiplicity class VI
Table 27
Table from Figure 5
10.17182/hepdata.84282.v1/t27
Transverse momentum spectra of $K^{+} + K^{-}$ in V0M multiplicity class VII
Table 28
Table from Figure 5
10.17182/hepdata.84282.v1/t28
Transverse momentum spectra of $K^{+} + K^{-}$ in V0M multiplicity class VIII
Table 29
Table from Figure 5
10.17182/hepdata.84282.v1/t29
Transverse momentum spectra of $K^{+} + K^{-}$ in V0M multiplicity class IX
Table 30
Table from Figure 5
10.17182/hepdata.84282.v1/t30
Transverse momentum spectra of $K^{+} + K^{-}$ in V0M multiplicity class X
Table 31
Table from Figure 5
10.17182/hepdata.84282.v1/t31
Transverse momentum spectra of $p + \bar{p}$ in V0M multiplicity class I
Table 32
Table from Figure 5
10.17182/hepdata.84282.v1/t32
Transverse momentum spectra of $p + \bar{p}$ in V0M multiplicity class II
Table 33
Table from Figure 5
10.17182/hepdata.84282.v1/t33
Transverse momentum spectra of $p + \bar{p}$ in V0M multiplicity class III
Table 34
Table from Figure 5
10.17182/hepdata.84282.v1/t34
Transverse momentum spectra of $p + \bar{p}$ in V0M multiplicity class IV
Table 35
Table from Figure 5
10.17182/hepdata.84282.v1/t35
Transverse momentum spectra of $p + \bar{p}$ in V0M multiplicity class V
Table 36
Table from Figure 5
10.17182/hepdata.84282.v1/t36
Transverse momentum spectra of $p + \bar{p}$ in V0M multiplicity class VI
Table 37
Table from Figure 5
10.17182/hepdata.84282.v1/t37
Transverse momentum spectra of $p + \bar{p}$ in V0M multiplicity class VII
Table 38
Table from Figure 5
10.17182/hepdata.84282.v1/t38
Transverse momentum spectra of $p + \bar{p}$ in V0M multiplicity class VIII
Table 39
Table from Figure 5
10.17182/hepdata.84282.v1/t39
Transverse momentum spectra of $p + \bar{p}$ in V0M multiplicity class IX
Table 40
Table from Figure 5
10.17182/hepdata.84282.v1/t40
Transverse momentum spectra of $p + \bar{p}$ in V0M multiplicity class X
Table 41
Table from Figure 5
10.17182/hepdata.84282.v1/t41
Transverse momentum spectra of $K* + \bar{K}*$ in V0M multiplicity class I
Table 42
Table from Figure 5
10.17182/hepdata.84282.v1/t42
Transverse momentum spectra of $K* + \bar{K}*$ in V0M multiplicity class II
Table 43
Table from Figure 5
10.17182/hepdata.84282.v1/t43
Transverse momentum spectra of $K* + \bar{K}*$ in V0M multiplicity class III
Table 44
Table from Figure 5
10.17182/hepdata.84282.v1/t44
Transverse momentum spectra of $K* + \bar{K}*$ in V0M multiplicity class IV + V
Table 45
Table from Figure 5
10.17182/hepdata.84282.v1/t45
Transverse momentum spectra of $K* + \bar{K}*$ in V0M multiplicity class VI
Table 46
Table from Figure 5
10.17182/hepdata.84282.v1/t46
Transverse momentum spectra of $K* + \bar{K}*$ in V0M multiplicity class VII
Table 47
Table from Figure 5
10.17182/hepdata.84282.v1/t47
Transverse momentum spectra of $K* + \bar{K}*$ in V0M multiplicity class VIII
Table 48
Table from Figure 5
10.17182/hepdata.84282.v1/t48
Transverse momentum spectra of $K* + \bar{K}*$ in V0M multiplicity class IX
Table 49
Table from Figure 5
10.17182/hepdata.84282.v1/t49
Transverse momentum spectra of $K* + \bar{K}*$ in V0M multiplicity class X
Table 50
Table from Figure 5
10.17182/hepdata.84282.v1/t50
Transverse momentum spectra of $\phi$ in V0M multiplicity class I
Table 51
Table from Figure 5
10.17182/hepdata.84282.v1/t51
Transverse momentum spectra of $\phi$ in V0M multiplicity class II
Table 52
Table from Figure 5
10.17182/hepdata.84282.v1/t52
Transverse momentum spectra of $\phi$ in V0M multiplicity class III
Table 53
Table from Figure 5
10.17182/hepdata.84282.v1/t53
Transverse momentum spectra of $\phi$ in V0M multiplicity class IV + V
Table 54
Table from Figure 5
10.17182/hepdata.84282.v1/t54
Transverse momentum spectra of $\phi$ in V0M multiplicity class VI
Table 55
Table from Figure 5
10.17182/hepdata.84282.v1/t55
Transverse momentum spectra of $\phi$ in V0M multiplicity class VII
Table 56
Table from Figure 5
10.17182/hepdata.84282.v1/t56
Transverse momentum spectra of $\phi$ in V0M multiplicity class VIII
Table 57
Table from Figure 5
10.17182/hepdata.84282.v1/t57
Transverse momentum spectra of $\phi$ in V0M multiplicity class IX
Table 58
Table from Figure 5
10.17182/hepdata.84282.v1/t58
Transverse momentum spectra of $\phi$ in V0M multiplicity class X
Table 59
Table from Figure 6
10.17182/hepdata.84282.v1/t59
Unidentified particle spectral modification in V0M Class IX pp collisions.
Table 60
Table from Figure 6
10.17182/hepdata.84282.v1/t60
$\pi^{+}+\pi^{-}$ spectral modification in V0M Class IX pp collisions.
Table 61
Table from Figure 6
10.17182/hepdata.84282.v1/t61
$K^{+}+K^{-}$ spectral modification in V0M Class IX pp collisions.
Table 62
Table from Figure 6
10.17182/hepdata.84282.v1/t62
$p+\bar{p}$ spectral modification in V0M Class IX pp collisions.
Table 63
Table from Figure 6
10.17182/hepdata.84282.v1/t63
$\Lambda + \bar{\Lambda}$ spectral modification in V0M Class IX pp collisions.
Table 64
Table from Figure 6
10.17182/hepdata.84282.v1/t64
$\Xi^{-} + \bar{\Xi}^{+}$ spectral modification in V0M Class IX pp collisions.
Table 65
Table from Figure 6
10.17182/hepdata.84282.v1/t65
$K* + \bar{K}*$ spectral modification in V0M Class IX pp collisions.
Table 66
Table from Figure 6
10.17182/hepdata.84282.v1/t66
$\phi$ spectral modification in V0M Class IX pp collisions.
Table 67
Table from Figure 6
10.17182/hepdata.84282.v1/t67
Unidentified particle spectral modification in V0M Class I pp collisions.
Table 68
Table from Figure 6
10.17182/hepdata.84282.v1/t68
$\pi^{+}+\pi^{-}$ spectral modification in V0M Class I pp collisions.
Table 69
Table from Figure 6
10.17182/hepdata.84282.v1/t69
$K^{+}+K^{-}$ spectral modification in V0M Class I pp collisions.
Table 70
Table from Figure 6
10.17182/hepdata.84282.v1/t70
$p+\bar{p}$ spectral modification in V0M Class I pp collisions.
Table 71
Table from Figure 6
10.17182/hepdata.84282.v1/t71
$\Lambda + \bar{\Lambda}$ spectral modification in V0M Class I pp collisions.
Table 72
Table from Figure 6
10.17182/hepdata.84282.v1/t72
$\Xi^{-} + \bar{\Xi}^{+}$ spectral modification in V0M Class I pp collisions.
Table 73
Table from Figure 6
10.17182/hepdata.84282.v1/t73
$K* + \bar{K}*$ spectral modification in V0M Class I pp collisions.
Table 74
Table from Figure 6
10.17182/hepdata.84282.v1/t74
$\phi$ spectral modification in V0M Class I pp collisions.
Table 75
Table from Figure 7
10.17182/hepdata.84282.v1/t75
Transverse momentum dependence of $(p + \bar{p})/\phi$ yield ratios in low multiplicity pp collisions at $\sqrt{s} = 7$ (TeV).
Table 76
Table from Figure 7
10.17182/hepdata.84282.v1/t76
Transverse momentum dependence of $(K^{+} + K^{-})/(\pi^{+} + \pi^{-})$ yield ratios in low multiplicity pp collisions at $\sqrt{s} = 7$...
Table 77
Table from Figure 7
10.17182/hepdata.84282.v1/t77
Transverse momentum dependence of $(p + \bar{p})/(\pi^{+} + \pi^{-})$ yield ratios in low multiplicity pp collisions at $\sqrt{s} = 7$...
Table 78
Table from Figure 7
10.17182/hepdata.84282.v1/t78
Transverse momentum dependence of $\Lambda/K^{0}_{s}$ yield ratios in low multiplicity pp collisions at $\sqrt{s} = 7$ (TeV).
Table 79
Table from Figure 7
10.17182/hepdata.84282.v1/t79
Transverse momentum dependence of $(p + \bar{p})/\phi$ yield ratios in high multiplicity pp collisions at $\sqrt{s} = 7$ (TeV).
Table 80
Table from Figure 7
10.17182/hepdata.84282.v1/t80
Transverse momentum dependence of $(K^{+} + K^{-})/(\pi^{+} + \pi^{-})$ yield ratios in high multiplicity pp collisions at $\sqrt{s} = 7$...
Table 81
Table from Figure 7
10.17182/hepdata.84282.v1/t81
Transverse momentum dependence of $(p + \bar{p})/(\pi^{+} + \pi^{-})$ yield ratios in high multiplicity pp collisions at $\sqrt{s} = 7$...
Table 82
Table from Figure 7
10.17182/hepdata.84282.v1/t82
Transverse momentum dependence of $\Lambda/K^{0}_{s}$ yield ratios in high multiplicity pp collisions at $\sqrt{s} = 7$ (TeV).
Table 83
Table from Figure 8
10.17182/hepdata.84282.v1/t83
Transverse momentum dependence of $(p + \bar{p})/\phi$ ratio in low-$p_{T}$ interval in pp collisions as a function of $\langle dN_{ch}/d\eta...
Table 84
Table from Figure 8
10.17182/hepdata.84282.v1/t84
Transverse momentum dependence of $(K^{+} + K^{-})/(\pi^{+} + \pi^{-})$ ratio in low-$p_{T}$ interval in pp collisions as a function of...
Table 85
Table from Figure 8
10.17182/hepdata.84282.v1/t85
Transverse momentum dependence of $(p + \bar{p})/(\pi^{+} + \pi^{-})$ ratio in low-$p_{T}$ interval in pp collisions as a function of...
Table 86
Table from Figure 8
10.17182/hepdata.84282.v1/t86
Transverse momentum dependence of $\Lambda/K^{0}_{s}$ ratio in low-$p_{T}$ interval in pp collisions as a function of $\langle dN_{ch}/d\eta \rangle_{|\eta|<0.5}$.
Table 87
Table from Figure 8
10.17182/hepdata.84282.v1/t87
Transverse momentum dependence of $(p + \bar{p})/\phi$ ratio in mid-$p_{T}$ interval in pp collisions as a function of $\langle dN_{ch}/d\eta...
Table 88
Table from Figure 8
10.17182/hepdata.84282.v1/t88
Transverse momentum dependence of $(K^{+} + K^{-})/(\pi^{+} + \pi^{-})$ ratio in mid-$p_{T}$ interval in pp collisions as a function of...
Table 89
Table from Figure 8
10.17182/hepdata.84282.v1/t89
Transverse momentum dependence of $(p + \bar{p})/(\pi^{+} + \pi^{-})$ ratio in mid-$p_{T}$ interval in pp collisions as a function of...
Table 90
Table from Figure 8
10.17182/hepdata.84282.v1/t90
Transverse momentum dependence of $\Lambda/K^{0}_{s}$ ratio in mid-$p_{T}$ interval in pp collisions as a function of $\langle dN_{ch}/d\eta \rangle_{|\eta|<0.5}$.
Table 91
Table from Figure 8
10.17182/hepdata.84282.v1/t91
Transverse momentum dependence of $(p + \bar{p})/\phi$ ratio in high-$p_{T}$ interval in pp collisions as a function of $\langle dN_{ch}/d\eta...
Table 92
Table from Figure 8
10.17182/hepdata.84282.v1/t92
Transverse momentum dependence of $(K^{+} + K^{-})/(\pi^{+} + \pi^{-})$ ratio in high-$p_{T}$ interval in pp collisions as a function of...
Table 93
Table from Figure 8
10.17182/hepdata.84282.v1/t93
Transverse momentum dependence of $(p + \bar{p})/(\pi^{+} + \pi^{-})$ ratio in high-$p_{T}$ interval in pp collisions as a function of...
Table 94
Table from Figure 8
10.17182/hepdata.84282.v1/t94
Transverse momentum dependence of $\Lambda/K^{0}_{s}$ ratio in high-$p_{T}$ interval in pp collisions as a function of $\langle dN_{ch}/d\eta \rangle_{|\eta|<0.5}$.
Table 95
Table from Figure 10
10.17182/hepdata.84282.v1/t95
Integrated $(K^{+} + K^{-})$/$(\pi^{+} + \pi^{-})$ ratios as a function of $\langle dN_{ch}/d\eta\rangle$ in pp collisions at $\sqrt{s} = 7$...
Table 96
Table from Figure 10
10.17182/hepdata.84282.v1/t96
Integrated $(K^{*} + \bar{K}^{*})$/$(\pi^{+} + \pi^{-})$ ratios as a function of $\langle dN_{ch}/d\eta\rangle$ in pp collisions at $\sqrt{s} = 7$...
Table 97
Table from Figure 10
10.17182/hepdata.84282.v1/t97
Integrated $\phi$/$(\pi^{+} + \pi^{-})$ ratios as a function of $\langle dN_{ch}/d\eta\rangle$ in pp collisions at $\sqrt{s} = 7$ TeV.
Table 98
Table from Figure 14
10.17182/hepdata.84282.v1/t98
$\langle\beta_{T}\rangle$ from blast-wave fit to PbPb collisions at $\sqrt{s}$ = 2.76 TeV
Table 99
Table from Figure 14
10.17182/hepdata.84282.v1/t99
$T_{kin}$ from blast-wave fit to PbPb collisions at $\sqrt{s}$ = 2.76 TeV
Table 100
Table from Figure 14
10.17182/hepdata.84282.v1/t100
$n$ from blast-wave fit to PbPb collisions at $\sqrt{s}$ = 2.76 TeV
Table 101
Table from Figure 14
10.17182/hepdata.84282.v1/t101
$\langle\beta_{T}\rangle$ from blast-wave fit to pPb collisions at $\sqrt{s}$ = 5.02 TeV
Table 102
Table from Figure 14
10.17182/hepdata.84282.v1/t102
$T_{kin}$ from blast-wave fit to pPb collisions at $\sqrt{s}$ = 5.02 TeV
Table 103
Table from Figure 14
10.17182/hepdata.84282.v1/t103
$n$ from blast-wave fit to pPb collisions at $\sqrt{s}$ = 5.02 TeV
Table 104
Table from Figure 14
10.17182/hepdata.84282.v1/t104
$\langle\beta_{T}\rangle$ from blast-wave fit to pp collisions at $\sqrt{s}$ = 7 TeV
Table 105
Table from Figure 14
10.17182/hepdata.84282.v1/t105
$T_{kin}$ from blast-wave fit to pp collisions at $\sqrt{s}$ = 7 TeV
Table 106
Table from Figure 14
10.17182/hepdata.84282.v1/t106
$n$ from blast-wave fit to pp collisions at $\sqrt{s}$ = 7 TeV
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