Onset of radial flow in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>p</mml:mi><mml:mo>+</mml:mo><mml:mi>p</mml:mi></mml:mrow></mml:math>collisions

Jiang, K.; Zhu, Y.; Liu, Weitao; Chen, Hongfang; Li, Cheng; Ruan, L.; Tang, Z.; Xu, Z.

doi:10.1103/physrevc.91.024910

Cited by 59 publications

(69 citation statements)

References 51 publications

(27 reference statements)

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“…The pion m T spectra deviate from the trend followed by the other mesons for m T 2 GeV/c 2 , which is likely due to feed-down from resonance decays [73]. The measured primary π ± yield contains a significant contribution mostly from ρ and ω decays, which, according to a recent study [23], affects the lowp T ( 1 GeV/c) part of the spectrum with increasing importance towards higher collision energies.…”

Section: Transverse Mass (M T ) Scalingmentioning

confidence: 80%

Production of light-flavor hadrons in pp collisions at $$\sqrt{s}~=~7\text { and }\sqrt{s} = 13 \, \text { TeV} $$

Acharya

Adamová²,

Adler³

et al. 2021

Eur. Phys. J. C

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The production of $$\pi ^{\pm }$$ π ± , $$\mathrm{K}^{\pm }$$ K ± , $$\mathrm{K}^{0}_{S}$$ K S 0 , $$\mathrm{K}^{*}(892)^{0}$$ K ∗ ( 892 ) 0 , $$\mathrm{p}$$ p , $$\phi (1020)$$ ϕ ( 1020 ) , $$\Lambda $$ Λ , $$\Xi ^{-}$$ Ξ - , $$\Omega ^{-}$$ Ω - , and their antiparticles was measured in inelastic proton–proton (pp) collisions at a center-of-mass energy of $$\sqrt{s}$$ s = 13 TeV at midrapidity ($$|y|<0.5$$ | y | < 0.5 ) as a function of transverse momentum ($$p_{\mathrm{T}}$$ p T ) using the ALICE detector at the CERN LHC. Furthermore, the single-particle $$p_{\mathrm{T}}$$ p T distributions of $$\mathrm{K}^{0}_{S}$$ K S 0 , $$\Lambda $$ Λ , and $$\overline{\Lambda }$$ Λ ¯ in inelastic pp collisions at $$\sqrt{s} = 7$$ s = 7 TeV are reported here for the first time. The $$p_{\mathrm{T}}$$ p T distributions are studied at midrapidity within the transverse momentum range $$0\le p_{\mathrm{T}}\le 20$$ 0 ≤ p T ≤ 20 GeV/c, depending on the particle species. The $$p_{\mathrm{T}}$$ p T spectra, integrated yields, and particle yield ratios are discussed as a function of collision energy and compared with measurements at lower $$\sqrt{s}$$ s and with results from various general-purpose QCD-inspired Monte Carlo models. A hardening of the spectra at high $$p_{\mathrm{T}}$$ p T with increasing collision energy is observed, which is similar for all particle species under study. The transverse mass and $$x_{\mathrm{T}}\equiv 2p_{\mathrm{T}}/\sqrt{s}$$ x T ≡ 2 p T / s scaling properties of hadron production are also studied. As the collision energy increases from $$\sqrt{s}$$ s = 7–13 TeV, the yields of non- and single-strange hadrons normalized to the pion yields remain approximately constant as a function of $$\sqrt{s}$$ s , while ratios for multi-strange hadrons indicate enhancements. The $$p_\mathrm{{T}}$$ p T -differential cross sections of $$\pi ^{\pm }$$ π ± , $$\mathrm {K}^{\pm }$$ K ± and $$\mathrm {p}$$ p ($$\overline{\mathrm{p}}$$ p ¯ ) are compared with next-to-leading order perturbative QCD calculations, which are found to overestimate the cross sections for $$\pi ^{\pm }$$ π ± and $$\mathrm{p}$$ p ($$\overline{\mathrm{p}}$$ p ¯ ) at high $$p_\mathrm{{T}}$$ p T .

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Section: Transverse Mass (M T ) Scalingmentioning

confidence: 80%

Production of light-flavor hadrons in pp collisions at $$\sqrt{s}~=~7\text { and }\sqrt{s} = 13 \, \text { TeV} $$

Acharya

Adamová²,

Adler³

et al. 2021

Eur. Phys. J. C

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“…As we know, certain models [6][7][8][44][45][46][47][48][49][50][51][52] are used to obtain T 0 and β T , and it is difficult to obtain the similar results compared to others [53][54][55][56][57][58][59] from these models with the increase of quantities. Although the present work provides similar results to [53][54][55][56][57][58][59] by the four models, the first and third models are preferred as they use a Boltzmann distribution, which is closer to the well-known ideal gas model. In addition, the hard component has no contribution to T 0 and β T due to its non-thermal production.…”

Section: Represent Values Of T Listed Inmentioning

confidence: 99%

Examining the model dependence of the determination of kinetic freeze-out temperature and transverse flow velocity in small collision system

Lao

Liu

et al. 2018

NUCL SCI TECH

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The transverse momentum distributions of the identified particles produced in small collision systems at the Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) have been analyzed by four models. The first two models utilize the blast-wave model with different statistics. The last two models employ certain linear correspondences based on different distributions. The four models describe the experimental data measured by the Pioneering High Energy Nuclear Interaction eXperiment (PHENIX), Solenoidal Tracker at RHIC (STAR), and A Large Ion Collider Experiment (ALICE) cCollaborations equally well. It is found that both the kinetic freeze-out temperature and transverse flow velocity in the central collisions are comparable with those in the peripheral collisions. With the increase of collision energy from that of the RHIC to that of the LHC, the considered quantities typically do not decrease. Comparing with the central collisions, the proton-proton collisions are closer to the peripheral collisions.R 0 rβ(r)dr = 2β S /(n 0 + 2) = 0.5β S . ii) TBW model [9]: in this model we also considered a non-zero β T .

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“…There are various models suggested for the extraction of

, V and

; e.g., the blast wave model with Boltzmann Gibbs statistics (BGBW) [ 19 , 20 , 21 ], the blast wave model with Tsallis statistics (TBW) [ 22 , 23 , 24 ], an alternative method by using Tsallis statistics [ 25 , 26 , 27 , 28 , 29 , 30 , 31 ] and an alternative method by using the blast wave model with Boltzmann Gibbs statistics [ 32 , 33 , 34 , 35 , 36 , 37 ]. In this work, we choose the blast wave model with Boltzmann Gibbs statistics, which is a phenomenological model and is used for the spectra of hadrons based on the flow of local thermal sources with global variables of temperature, volume and transverse flow velocity.…”

Section: Methods and Formalismmentioning

confidence: 99%

Study of Dependence of Kinetic Freezeout Temperature on the Production Cross-Section of Particles in Various Centrality Intervals in Au–Au and Pb–Pb Collisions at High Energies

Ajaz

Peng

2021

Entropy

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Transverse momentum spectra of π+, p, Λ, Ξ or Ξ¯+, Ω or Ω¯+ and deuteron (d) in different centrality intervals in nucleus–nucleus collisions at the center of mass energy are analyzed by the blast wave model with Boltzmann Gibbs statistics. We extracted the kinetic freezeout temperature, transverse flow velocity and kinetic freezeout volume from the transverse momentum spectra of the particles. It is observed that the non-strange and strange (multi-strange) particles freezeout separately due to different reaction cross-sections. While the freezeout volume and transverse flow velocity are mass dependent, they decrease with the resting mass of the particles. The present work reveals the scenario of a double kinetic freezeout in nucleus–nucleus collisions. Furthermore, the kinetic freezeout temperature and freezeout volume are larger in central collisions than peripheral collisions. However, the transverse flow velocity remains almost unchanged from central to peripheral collisions.

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Onset of radial flow inp+pcollisions

Cited by 59 publications

References 51 publications

Production of light-flavor hadrons in pp collisions at $$\sqrt{s}~=~7\text { and }\sqrt{s} = 13 \, \text { TeV} $$

Production of light-flavor hadrons in pp collisions at $$\sqrt{s}~=~7\text { and }\sqrt{s} = 13 \, \text { TeV} $$

Examining the model dependence of the determination of kinetic freeze-out temperature and transverse flow velocity in small collision system

Study of Dependence of Kinetic Freezeout Temperature on the Production Cross-Section of Particles in Various Centrality Intervals in Au–Au and Pb–Pb Collisions at High Energies

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