https://doi.org/10.1140/epjc/s10052-010-1322-6
Regular Article - Theoretical Physics
Parton rescattering effect on particle production in ultra-relativistic p+p collisions
1
China Institute of Atomic Energy, P.O. Box 275 (18), Beijing, 102413, China
2
Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou, 730000, China
3
Institute of Particle Physics, Huazhong Normal University, Wuhan, 430079, China
4
CCAST (World Laboratory), P.O. Box 8730, Beijing, 100080, China
* e-mail: sabh@ciae.ac.cn
Received:
17
December
2009
Revised:
12
February
2010
Published online:
28
April
2010
The parton rescattering effect on the charged particle production in ultra-relativistic p+p collisions is studied by the parton and hadron cascade model PACIAE, based on PYTHIA. We have calculated charged particle pseudorapidity density at mid-rapidity and the pseudorapidity distribution in inelastic and non-single diffractive p+p collisions at 
, 900, 5500, and 14000 GeV with the PYTHIA and PACIAE models. The calculated results for 
GeV are well compared with the ALICE data. Comparing the PYTHIA results (without parton rescattering) with the PACIAE results (with parton rescattering), it turned out that the parton rescattering may play an important role and this effect increases with increasing CMS energy.
© Springer-Verlag / Società Italiana di Fisica, 2010
