Comment on the Energy Dependence of Charged-Particle Multiplicity

1973 ◽  
Vol 8 (7) ◽  
pp. 2311-2313
Author(s):  
S. Rai Choudhury
Keyword(s):  
Charged Particle ◽  
Energy Dependence ◽  
Particle Multiplicity ◽  
Charged Particle Multiplicity

scholarly journals The energy dependence of charged particle multiplicity in p-p interactions

1980 ◽  
Vol 95 (2) ◽  
pp. 311-312 ◽  
Author(s):  
M. Basile ◽  
G. Cara Romeo ◽  
L. Cifarelli ◽  
A. Contin ◽  
G. D'Ali ◽  
...  
Keyword(s):  
Charged Particle ◽  
Energy Dependence ◽  
Particle Multiplicity ◽  
Charged Particle Multiplicity

scholarly journals Multiplicity dependence of (multi-)strange hadron production in proton-proton collisions at $$\sqrt{s}$$ = 13 TeV

2020 ◽  
Vol 80 (2) ◽  
Author(s):  
S. Acharya ◽  
◽  
D. Adamová ◽  
S. P. Adhya ◽  
A. Adler ◽  
...  
Keyword(s):  
Charged Particle ◽  
Charged Particles ◽  
General Purpose ◽  
Particle Multiplicity ◽  
Charged Particle Multiplicity ◽  
Production Rates ◽  
Proton Proton ◽  
Proton Collisions ◽  
Strange Hadron ◽  
Proton Proton Collisions

Abstract The production rates and the transverse momentum distribution of strange hadrons at mid-rapidity ($$\left| y\right| < 0.5$$y<0.5) are measured in proton-proton collisions at $$\sqrt{s}$$s = 13 TeV as a function of the charged particle multiplicity, using the ALICE detector at the LHC. The production rates of $$\mathrm{K}^{0}_{S}$$KS0, $$\Lambda $$Λ, $$\Xi $$Ξ, and $$\Omega $$Ω increase with the multiplicity faster than what is reported for inclusive charged particles. The increase is found to be more pronounced for hadrons with a larger strangeness content. Possible auto-correlations between the charged particles and the strange hadrons are evaluated by measuring the event-activity with charged particle multiplicity estimators covering different pseudorapidity regions. When comparing to lower energy results, the yields of strange hadrons are found to depend only on the mid-rapidity charged particle multiplicity. Several features of the data are reproduced qualitatively by general purpose QCD Monte Carlo models that take into account the effect of densely-packed QCD strings in high multiplicity collisions. However, none of the tested models reproduce the data quantitatively. This work corroborates and extends the ALICE findings on strangeness production in proton-proton collisions at 7 TeV.

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