Forward-backward multiplicity correlation in e+e− collisions at 91 GeV and 133 GeV

Chen, L.K.; Kiang, D.; Chew, C. K.

doi:10.1016/s0370-2693(97)00777-6

Cited by 2 publications

(1 citation statement)

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“…In e + e − annihilation, in contrast, only very weak FB correlations were found [11,12]. These peculiarities attract significant attention of theorists; see, e.g., [13][14][15][16][17][18][19][20][21][22][23] and references therein.…”

Section: Introductionmentioning

confidence: 99%

On the origin of forward–backward multiplicity correlations in pp collisions at ultrarelativistic energies

2018

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We study multiplicity correlations of hadrons in forward and backward hemispheres in pp inelastic interactions at energies 200 GeV ≤ √ s ≤ 13 TeV within the microscopic quark-gluon string model. The model correctly describes (i) the almost linear dependence of average multiplicity in one hemisphere on the particle multiplicity in other hemisphere in the center-of-mass frame; (ii) the increase of the slope parameter b corr with rising collision energy; (iii) the quick falloff of the correlation strength with increase of the midrapidity gap; (iv) saturation of the forward-backward correlations at very high multiplicities. Investigation of the sub-processes on partonic level reveals that these features can be attributed to short-range partonic correlations within a single string and superposition of several sub-processes containing different numbers of soft and hard Pomerons with different mean multiplicities. If the number of Pomerons in the event is fixed, no forward-backward correlations are observed. Predictions are made for the top LHC energy √ s = 13 TeV.

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