Mass and transverse mass effects on the hadron emitter size

Gideon Alexander*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We investigate the dependence of the longitudinal emitter dimension r∥ of identical bosons, produced in the hadronic Z0 decays, on their transverse mass mT obtained from 2-dimensional Bose-Einstein correlations (BEC) analyses. We show that this dependence is well described by the expression r∥ = c√ℏΔt / √mT, deduced from the uncertainty relations, setting Δt to be a constant of the order of 10-24 s. This equation is essentially identical to the one previously applied to the 1-dimensional BEC results for the emitter radius dependence on the boson mass itself. It is further shown that a very similar behaviour exists also for the dependence of the interatomic separation in Bose condensates on their atomic masses when they are at the same very low temperature.

Original languageEnglish
Pages (from-to)45-51
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
StatePublished - 3 May 2001


  • Bose condensates
  • Bose-Einstein correlations
  • Emission size
  • Hadron transverse mass


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