Inclusive One– and Two–Jet Cross Sections in γγ Reactions at e+e− Colliders
نویسندگان
چکیده
We have calculated inclusive one– and two–jet production in photon–photon collisions superimposing direct, single resolved and double resolved cross sections for center of mass energies of the LEP1, LEP2 and NLC range. The direct and single resolved cross sections are calculated up to next–to–leading order. The double resolved two–jet cross section is calculated only in LO with a k factor estimated from the NLO one–jet cross section. Various differential cross sections as functions of transverse momenta and rapidities of the jets are evaluated. ∗Supported by Bundesministerium für Forschung und Technologie, Bonn, Germany under Contract 05 6HH93P(5) and EEC Program “Human Capital and Mobility” through Network “Physics at High Energy Colliders” under Contract CHRX–CT93–0357 (DG12 COMA)
منابع مشابه
Inclusive Two–Jet Cross Sections in γγ–Processes at e+e− Colliders
We have calculated inclusive one– and two–jet production in photon–photon collisions in next–to–leading order superimposing direct, single resolved and double resolved cross sections. The results are compared with recent experimental data from the TOPAZ and AMY collaborations at TRISTAN. Good agreement is found between experiment and the theoretical results. ∗Supported by Bundesministerium für ...
متن کاملJet Cross Sections in γγ-Scattering at ee Colliders in NLO QCD
Recent results from NLO QCD calculations for inclusive jet cross sections in γ∗γ-scattering at ee colliders, especially for LEP, are reported. The virtuality Q of the virtual photon is non-zero and can be unlimited large. The virtuality of the second photon is zero and the spectrum is calculated with the Weizsäcker-Williams approximation. Four components of the cross sections have to be disting...
متن کاملInclusive Jet Measurements in Collisions at Tristan and Estimation of Minijets for Future Linear Colliders
TOSHIAKI TAUCHI National Laboratory for High Energy Physics, KEK 1-1 Oho, Tsukuba-shi, Ibaraki, 305, Japan and HISAKI HAYASHII Department of physics, Nara women's University, Nara 630, Japan Abstract We have measured the inclusive jet production cross sections in e+e ! (ee) jets at ps =58GeV using the TOPAZ detector at TRISTAN. We clearly observed the contribution of resolved photon processes. ...
متن کاملInclusive Jet Production in γp and γγ Processes: Direct and Resolved Photon Cross Sections in Next-To-Leading Order QCD
The production of jets in low Q ep scattering (photoproduction) and in low Q ee scattering (γγ scattering) allows for testing perturbative QCD and for measuring the proton and photon structure functions. This requires exact theoretical predictions for oneand two-jet cross sections. We describe the theoretical formalism, giving sufficient details, for calculating the direct and resolved processe...
متن کاملEikonalized mini-jet cross-sections in γγ collisions
In this note we assess the validity and uncertainties in the predictions of the eikonalised mini-jet model for σ γγ . We are able to find a choice of parameters where the predictions are compatible with the current data. Even for this restricted range of parameters the predictions at the high c.m. energies, which can be reached at the TeV energy e+e− colliders, differ by about ±25%. LEP 2 data ...
متن کامل