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where is probability of observing objects inside of some phase space regions. The bunching parameters measure deviations of the multiplicity distribution from a Poisson distribution, since for this distribution
Normalised factorial moments have also similar properties. They are defined as
Bunching parameters and normalized factorial moments are included to the DataMelt program for data analysis and scientific computing.
- Chekanov, S.V.; Kuvshinov, V.I. (1994). "Bunching Parameter and Intermittency in High-Energy Collisions" (PDF). Acta Physica Polonica B 25: 1189–1197. arXiv:hep-ph/9605379. Bibcode:1996hep.ph....5379C.
- Chekanov, S.V.; Kittel, W.; Kuvshinov, V.I. (1996). "Multifractal Multiplicity Distribution in Bunching-Parameter Analysis". Journal of Physics G 22 (5): 601–610. arXiv:hep-ph/9606202. Bibcode:1996JPhG...22..601C. doi:10.1088/0954-3899/22/5/007.
- Chekanov, S.V.; Kuvshinov, V.I.; Kuvshinov, V. I. (1997). "Generalized Bunching Parameters and Multiplicity Fluctuations in Restricted Phase-Space Bins". Zeitschrift für Physik C 74 (3): 517–529. arXiv:hep-ph/9606335. doi:10.1007/s002880050414.
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