Effective fire tube and geometric scaling in proton-proton and proton-antiproton collisions

A new scheme for calculation of the multiplicity distributions in hadronic interactions

“…The idea of string formation for multiparticle production is similar to Lund model [1] and it has been applied also for hadron-hadron collisions by Rio de Janeiro group [2]. Two fit values of A = 0.258 and A = 0.198 have been obtained in the previous study [3], the first one giving a better account of lower energy data whereas the second one higher energy data.…”

“…Here we fixed the value of A = 0.2 as obtained in Section 2, G in is that obtained by Henzi and Valin [10], G (i) (s, b) (i =1,2) given by Eq. (16), ψ (1) and ψ (2) by Eqs. (14) and (28) and the value of ξ(s) was obtained with Eq.…”

“…(21). Confining ourselves just to two independent-string formation, we need to specify ψ (1) and ψ (2) . On the assumption that the multiplicity distribution of each chain is independent and have the same form of ψ (1) , we may write ψ (2) as a convolution product…”

Ξ− production by Σ−. π− and neutrons in the hyperon beam experiment WA89 at CERN

“…The production of strange or heavy quarks and their subsequent hadronization in hadron-hadron collisions constitute an important benchmark test for QCD-inspired phenomenological models [1][2][3][4][5] describing soft phenomena and the applicability of perturbative QCD to hard processes. Using, for example, projectiles with different flavour contents, the role of valence quarks can be explored [1,3,6].…”

Charm production in flux tubes

“…Such a hybrid approach to particle production (we call it the "firetube" model) was developed in Ref. [7] to study the rapidity and transverse momentum distributions of pions and nucleons in hadronic collisions. In the present paper we show how the firetube model can be extended to describe charm and strangeness production.…”