Multiplicity distribution in pseudo-rapidity windows and charge conservation

Jul 7, 2019
12 pages
Published in:
  • J.Phys.G 48 (2021) 8, 085008
  • Published: Jun 24, 2021
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Abstract: (IOP)
Charged multiplicity distribution (MD) in a pseudo-rapidity window is formulated under the assumption that the charge conservation is satisfied in full phase space. At first, we analyze measured charged particle MDs in pseudo-rapidity windows in the LHC experiments by the CMS and ALICE collaborations with the two probability distributions. One is the convolution of negative binomial and Poisson distributions, and the other is the Glauber–Lachs (GL) formula. Each distribution is considered as an analogy of the quantum optics. Next, we analyze the data with the sum of two GL formulae for |η| < 1.5 and |η| < 2.4 at 7 TeV by the CMS collaboration, and for |η| < 1.5 at 7 and 8 TeV by the ALICE collaboration to describe the global structure of measured distributions.
Note:
  • 12 pages, 7 figures
  • 12.85.Hd
  • charge: conservation law
  • charged particle: multiplicity: measured
  • optics: quantum
  • ALICE
  • CMS
  • CERN LHC Coll
  • phase space
  • rapidity
  • Poisson