Two-particle angular correlations in e(+)e(-) collisions to hadronic final states in two reference coordinates at Belle

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2023-03-23, 2023-03-23

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Springer

Abstract

We present the analysis of two-particle angular correlations using coordinate systems defined with the conventional beam axis and the event thrust axis. We propose the latter as a good representation for the correlation structure interpretation in the e+e− collision system. The e+e− collisions to hadronic final states at center-of-mass energies of s = 10.52 GeV and 10.58 GeV are recorded by the Belle detector at KEKB. In this paper, results on the first dataset are supplementary to the previous Belle publication [1]. At the same time, the latter is the first two-particle correlation measurement at collision energy on the Υ(4S) resonance and is sensitive to its decay products. Measurements are reported as a function of the charged-particle multiplicity. Finally, a qualitative understanding of the correlation structure is discussed using a combination of Monte Carlo simulations and experimental data. [Figure not available: see fulltext.].

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Science & Technology, Physical Sciences, Physics, Particles & Fields, Physics, QCD, Quark Gluon Plasma, Relativistic Heavy Ion Physics, e(+)-e(-) Experiments, ANISOTROPY, 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 5110 Synchrotrons and Accelerators, 51 Physical Sciences, 4902 Mathematical physics

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