A phenomenological study of single transverse-spin asymmetry for inclusive light-hadron productions at RHIC

Abstract

We study the single transverse-spin asymmetry for inclusive light-hadron productions in the proton-proton collision, $\pphx$ ($h=\pi ,K,\eta$), for the RHIC kinematics based on the twist-3 mechanism in the collinear factorization. The analysis includes all the contributions from the soft-gluon pole and the soft-fermion pole for the twist-3 quark-gluon correlation functions in the transversely polarized proton. After discussing the flavor decomposition and the $P_T$-dependence of the asymmetry obtained in the previous analysis at the center-of-mass energy $\sqrt{S}=62.4$ and 200 GeV, we will give a prediction for the asymmetry at $\sqrt{S}=500$ GeV and also for the $\eta$-meson production. We found slightly smaller asymmetry at $\sqrt{S}=500$ GeV for ${\pi }^{\pm ,0}$ and $K^{+}$ compared with those at the lower energies. The asymmetry for the $\eta$-meson turned out to be significantly larger than that for ${\pi }^0$.

12 pages, 8 figures, Final version published in Phys. Rev. D 83, 114024 (2011)

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• Contribution of twist-3 fragmentation function to single transverse-spin asymmetry in semi-inclusive deep inelastic scattering
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• Phenomenological constraints on $A_N$ in $p^{\uparrow }p\to \pi X$ from Lorentz invariance relations
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• Transverse Spin Structure of the Nucleon
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• Left-right spin asymmetry in $\ell N^{\uparrow }\to hX$
• Single transverse spin asymmetry of prompt photon production
• Transverse single-spin asymmetries in $p^{\uparrow }p\to \gamma X$ from quark-gluon-quark correlations in the proton
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• Single transverse-spin asymmetry for direct-photon and single-jet productions at RHIC
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• Twist-3 fragmentation effects for $A_{LT}$ in light hadron production from proton-proton collisions
• Transverse single-spin asymmetries in proton-proton collisions at the AFTER@LHC experiment
• Single Transverse-Spin Asymmetry in Large $P_T$ Open Charm Production at an Electron-Ion Collider
• Single spin asymmetries in forward p-p/A collisions revisited: the role of color entanglement
• The transverse nucleon single-spin asymmetry for the semi-inclusive production of photons in lepton-nucleon scattering
• Transverse single-spin asymmetry of charged hadrons at forward and backward rapidity in polarized $p$+$p$, $p$+Al, and $p$+Au collisions at $\sqrt{s_{NN}}=200$ GeV}
• SPIN Effects, QCD, and Jefferson Laboratory with 12 GeV electrons
• $A_N$ in inclusive lepton-proton collisions: TMD and twist-3 approaches
• Nonperturbative factorization breaking and color entanglement effects in dihadron and direct photon-hadron angular correlations in $p$$+$$p$ and $p$$+$A collisions