Production and decay of quark-gluon strings: inclusive distributions of hadrons in p⊥ and x

• Published in: Physics letters. B 1985-08, Vol.158 (2), p.175-179
• Main Authors: Veselov, A.I., Piskunova, O.I., Ter-Martirosyan, K.A.
• Format: Article
• Language: English
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/0370-2693(85)91387-5

The dependence of inclusive cross sections of the production of hadrons p p → hX on p ⊥ (and also on x and √ s) is calculated at high energy in the region of small p ⊥ ≲ 1–2 GeV. The model of production and decay of quark-gluon strings is used under the simplest assumptions about the k ⊥ dependence of the quark distributions in nucleons ∼ exp(− γ 1 k 2 ⊥) and about the form of the string fragmentation function G ̃ h ∼ exp[−γ h ( p ⊥ − z k ⊥) 2] where γ 1 and γ h are some constants. The theory reproduces all existing experimental data and yields the “seagull effect” for the dependence of 〈 p ⊥〉 on x. Predictions are given for the p ⊥ dependence of the spectra of π ± mesons produced at high energies at SPS and other future colliders.