Longitudinally Polarized Photoproduction of Inclusive Hadrons Beyond the Leading Order
نویسندگان
چکیده
We present a complete next-to-leading order QCD calculation for single-inclusive largepT hadron production in longitudinally polarized lepton-nucleon collisions, consistently including “direct” and “resolved” photon contributions. This process could be studied experimentally at a future polarized lepton-proton collider like eRHIC at BNL. We examine the sensitivity of such measurements to the so far completely unknown parton content of circularly polarized photons.
منابع مشابه
Photoproduction of Heavy Quarks in Next-to-Leading Order QCD with Longitudinally Polarized Initial States
We present all relevant details of our calculation of the complete next-to-leading order (O(α2 sα)) QCD corrections to heavy flavor photoproduction with longitudinally polarized point-like photons and hadrons. In particular we provide analytical results for the virtual plus soft gluon cross section. We carefully address the relevance of remaining theoretical uncertainties by varying, for instan...
متن کاملParton Distributions from Photoproduction in Polarized ep Scattering at HERA
We study photoproduction of jets and single-inclusive hadrons in a polarized ep collider mode of HERA at √ s ≈ 300 GeV, examining the sensitivity of the cross sections and their asymmetries to the proton’s polarized gluon distribution and to the completely unknown parton distributions of polarized photons. We also present for the first time the NLO corrections to the direct part of polarized si...
متن کاملNLO Analysis of Semi-inclusive DIS
We present a combined NLO QCD analysis to data on both inclusive and semi-inclusive polarized asymmetries. We also present the NLO corrections to the direct part of the polarized photoproduction of charged hadrons.
متن کاملRecent measurement of ∆G/G at COMPASS
We present a preliminary measurement of the gluon polarization ∆G/G in the nucleon, based on the spin asymmetry of quasi-real photoproduction events for which a pair of large transverse momentum hadrons is produced. The data were obtained by the COMPASS experiment at CERN using a 160 GeV polarized muon beam scattered on a large polarized 6LiD target. The preliminary helicity asymmetry for the s...
متن کاملNext-to-leading order QCD corrections to inclusive-hadron photoproduction in polarized lepton-proton collisions
We calculate the next-to-leading order QCD corrections to the “direct” part of the spin-dependent cross section for single-inclusive charged-hadron photoproduction. This process could be studied experimentally in future polarized fixed-target lepton-nucleon experiments, but also at the HERA ep collider after an upgrade to both beams being polarized. We present a brief numerical evaluation of ou...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2003