J/ψ plus jet associated production in two-photon collisions at next-to-leading order
نویسندگان
چکیده
We calculate the cross section of J/ψ plus jet inclusive production in γγ collisions at next-to-leading order within the factorization formalism of nonrelativistic quantum chromodynamics (NRQCD) focusing on direct photoproduction. Apart from direct J/ψ production, we also include the feed-down from directly-produced χcJ and ψ ′ mesons. We discuss the analytical calculation, in particular the treatment of the various types of singularities and the NRQCD operator renormalization, in some detail. We present theoretical predictions for the future e+e− linear collider TESLA, taking into account both bremsand beamstrahlung. PACS numbers: 12.38.Bx, 12.39.St, 13.66.Bc, 14.40.Gx
منابع مشابه
J/ψ plus prompt-photon associated production in two-photon collisions at next-to-leading order
We calculate the cross section of J/ψ plus prompt-photon inclusive production in γγ collisions at next-to-leading order within the factorization formalism of nonrelativistic quantum chromodynamics (NRQCD) focusing on direct photoproduction. Apart from direct J/ψ production, we also include the feed-down from directlyproduced χcJ and ψ ′ mesons. We discuss the analytical calculation, in particul...
متن کاملCharmonium production in two-photon collisions at next-to-leading order
We review recent results on the production of prompt charmonium in association with a hadron jet or a prompt photon in two-photon collisions at next-to-leading order in the factorization framework of nonrelativistic quantum chromodynamics.
متن کاملJ/ψ plus dijet associated production in two-photon collisions
We study the production of a J/ψ meson in association with one or two jets in γγ collisions concentrating on the direct-photon contribution, which is expected to be dominant for large J/ψ-meson transverse momentum and/or large dijet invariant mass. We work at leading order in the factorization formalism of nonrelativistic QCD and include all relevant colour-octet processes. We present distribut...
متن کاملPhoton Plus Jet Production in Large - Q 2 ep Collisions at Next - to - Leading Order QCD
The production of photons accompanied by jets in large-Q deep inelastic ep scattering is calculated in next-to-leading order. We describe how to consistently include contributions from quark-to-photon fragmentation and give numerical results relevant for HERA experiments.
متن کاملInclusive Two–Jet Production in Photon–Photon Collisions: Direct and Resolved Contributions in Next–to–Leading Order QCD
We have calculated inclusive two–jet production in photon–photon collisions superimposing direct, single–resolved and double–resolved cross sections for center–of–mass energies of TRISTAN and LEP1.5. All three contributions are calculated up to next–to– leading order. The results are compared with recent experimental data. Three NLO sets of parton distributions of the photon are tested. E–mail:...
متن کامل