Inclusive Hadron Production in Photon-Photon Collisions at Next-to-Leading Order

Abstract

We study inclusive charged-hadron production in collisions of quasireal photons at NLO in perturbative QCD, using fragmentation functions recently extracted from PEP and LEP1 data. We superimpose the direct (DD), single-resolved (DR), and double-resolved (RR) gamma-gamma channels. First, we confront existing data taken by TASSO at PETRA and by MARK II at PEP with our NLO calculations. We also make comparisons with the neutral-kaon to charged-hadron ratio measured by MARK II. Then, we present NLO predictions for LEP2, a next-generation e+e- linear collider (NLC) in the TESLA design, and a Compton collider obtained by converting a NLC. We analyze transverse-momentum and rapidity spectra with regard to the scale dependence, the interplay of the DD, DR, and RR components, the sensitivity to the gluon density in the resolved photon, and the influence of gluon fragmentation. It turns out that the inclusive measurement of small-p_T hadrons at a Compton collider would greatly constrain the gluon density of the photon and the gluon fragmentation function.

16 pages, 12 Postscript figures

References in corpus (13)

• Improving the Weizsäcker-Williams Approximation in Electron-Proton Collisions
• Next-to-Leading Order Fragmentation Functions for Pions and Kaons
• Pion and Kaon Production in $e^{+}{e}^{-}$ and $ep$ Collisions at Next-to-Leading Order
• Hadron production in gamma-gamma collisions as a background for e+e- linear colliders
• Next to leading order determination of pion fragmentation functions
• Neutral-Kaon Production in e^+e^-, ep, and p\bar p Collisions at Next-to-Leading Order
• Inclusive particle photoproduction to next-to-leading order
• Inclusive transverse momentum distributions of charged particles in diffractive and non--diffractive photoproduction at HERA
• Next to leading order eta production at hadron colliders
• Aspects of Two-Photon Physics at Linear e+e- Colliders
• Inclusive particle production at HERA: Higher-order QCD corrections to the resolved quasi-real photon contribution
• Light mesons production at the Tevatron to next-to-leading order
• INCLUSIVE PARTICLE PRODUCTION IN $\pbp$ COLLISIONS

Cited by in corpus (19)

• Physics Interplay of the LHC and the ILC
• Fragmentation Functions from Flavour-inclusive and Flavour-tagged e^+e^- Annihilations
• Physics with e^+e^- Linear Colliders
• Testing the Universality of Fragmentation Functions
• The Photon Structure from Deep Inelastic Electron-Photon Scattering
• Theory of hard photoproduction
• Open charm production at the LHC - $k_t$-factorization approach
• Automated calculation of Jet fragmentation at NLO in QCD
• Heavy quark and quarkonium production at CERN LEP2: k_T-factorization versus data
• Inclusive Charged Hadron Production in Two-Photon Collisions at LEP
• Inclusive Jet Production in Two-Photon Collisions at LEP
• Measurement of Inclusive $D^{\ast \pm }$ Production in Two-Photon Collisions at LEP
• Inclusive pi0 and K0s Production in Two-Photon Collisions at LEP
• Inclusive Production of Charged Hadrons in Photon-Photon Collisions
• Heavy Flavour Production in Two-Photon Collisions
• The pair production of charmed mesons in the photon-photon interaction
• Inclusive single-particle production in two-photon collisions at LEP II with the DELPHI detector
• Hadronic photon-photon scattering at LEP
• The Gamma-Gamma Interaction : A Critical Test of the Standard Model