Abstract
Charged hadronic multiplicity distributions at Fermilab, ISR and collider energies are shown to be described by generalized Bose-Einstein distributions of the type encountered in quantum optics. Systematic energy-dependent deviations from KNO scaling are well described by simple cases of this formula, which in the limit of large n have a simple and explicit scaling form, valid to a few percent at the CERN collider energy. It is suggested that this framework is generic, i.e., practically independent of dynamical details. The essential feature is that the field variables of the “radiant surface” for hadronic emission are distributed as gaussian random varibles (with k effective sources) as suggested by a typical central limit theorem argument. In order to bring the lower energy data into a form easily comparable with higher energy data, particularly for the crucial large multiplicity events ( n/ n ⪢ 1 , it is essential to remove the two charges of the “leading” particles from the counting rules. The long tail of the KNO distribution is to be identified with coherent fluctuations analogous to those occuring in the Hanbury-Brown-Twiss effect.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.