Single transverse spin asymmetries in inclusive hadron production
نویسنده
چکیده
A consistent phenomenological approach to the computation of transverse single spin asymmetries in inclusive hadron production is presented, based on the assumed generalization of the QCD factorization theorem to the case in which quark intrinsic motion is taken into account. New k⊥ and spin dependent quark distribution and fragmentation functions are considered: some of them are fixed by fitting data on p↑p→ πX and predictions are given for single spin asymmetries in `p↑ → πX and γ∗p↑ → πX processes.
منابع مشابه
ar X iv : h ep - p h / 99 05 49 0 v 1 2 6 M ay 1 99 9 1 Single transverse spin asymmetries in inclusive hadron production
A consistent phenomenological approach to the computation of transverse single spin asymmetries in inclusive hadron production is presented, based on the assumed generalization of the QCD factorization theorem to the case in which quark intrinsic motion is taken into account. New k⊥ and spin dependent quark distribution and fragmentation functions are considered: some of them are fixed by fitti...
متن کاملSingle Transverse Spin Asymmetries for Semi-inclusive Pion Production in DIS
We present a phenomenological approach to the description of single transverse spin asymmetries (STSA) in inclusive hadron production. It generalizes the pQCD formalism for high energies and large pT inclusive hadron production processes, AB → C X, by incorporating quark intrinsic motion in the spin dependent quark distribution and fragmentation functions. We concentrate here on spin and k⊥ eff...
متن کاملDouble Spin Asymmetries for Large-pT Hadron Production in Semi-Inclusive DIS
We study the twist-2 double-spin asymmetries for the 2-jets and large-pT hadron (π, Λ etc) production in semi-inclusive deep inelastic scattering to O(αs) in perturbative QCD. After deriving the complete set of the polarized cross section which is differential with respect to the transverse momentum, we discuss characteristic features of the azymuthal spin asymmetries, using existing parton den...
متن کاملSpin Physics with COMPASS
COMPASS is a fixed target experiment at CERN studying the spin structure of the nucleon via deep inelastic muon-nucleon scattering. Hadron spectroscopy and structure are investigated using hadronic beams. The main goal of the muon program is the determination of the gluon helicity contribution, ∆G/G, to the nucleon spin. Experimentally this quantity is accessible via the measurement of double s...
متن کاملA General Formalism for Single and Double Spin Asymmetries in Inclusive Hadron Production
We present a calculation of single and double spin asymmetries for inclusive hadron production in hadronic collisions. Our approach is based on Leading Order (LO) perturbative QCD and generalized factorization theorems, with full account of intrinsic parton momentum, k⊥, effects. This leads to a new class of spin and k⊥dependent distribution and fragmentation functions. Limiting ourselves to co...
متن کامل