Transverse single spin asymmetries in photon production

Abstract

Transverse single-spin asymmetries (SSA) in inclusive reactions are now considered to be directly related to the transverse momentum ${\mathbf{k}}_T$ of the fundamental partons involved in the process. We find that the ideal probe to extract information on the gluon Sivers function is the transverse SSA of prompt photon production $p{p}^{\uparrow }\to \gamma X$, at large $p_T$. The following related processes, $p{p}^{\uparrow }\to \gamma +jet+X$, $p{p}^{\uparrow }\to {\gamma }^{\ast }+X\to {\mu }^{+}{\mu }^{-}+X$ and $\bar{p}{p}^{\uparrow }\to \gamma +X$ are also briefly discussed.

9 pages, 1 figure, to appear Physics Letters B

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Cited by in corpus (21)

• Azimuthal and Single Spin Asymmetries in Hard Scattering Processes
• Parameterization of the quark-quark correlator of a spin-1/2 hadron
• Physics Opportunities of a Fixed-Target Experiment using the LHC Beams
• Single spin asymmetries in hadron-hadron collisions
• Towards a first estimate of the gluon Sivers function from $A_N$ data in $pp$ collisions at RHIC
• Unraveling the Gluon Sivers Function in Hadronic Collisions at RHIC
• Connection between the Sivers function and the anomalous magnetic moment
• The Sivers single-spin asymmetry in photon-jet production
• Constraints on the gluon Sivers distribution via transverse single spin asymmetries at midrapidity in p(transv. polarized) p -> pi^0 X processes at BNL RHIC
• Checking the Burkardt sum rule for the Sivers function by model calculations
• TMDs and SSAs in hadronic interactions
• Gluon TMDs in quarkonium production
• Double-spin asymmetry $A_{LT}$ in open charm production
• Transverse Single Spin Asymmetry in $p+p^{\uparrow }\to J/\psi +X$
• Spin physics at A Fixed-Target ExpeRiment at the LHC (AFTER@LHC)
• Probing the Gluon Sivers Function through direct photon production at RHIC
• Positivity bounds for Sivers functions
• Gluon TMD studies at EIC
• Physics with prompt photons at SPD
• Measurement of the Transverse Single-Spin Asymmetry for Mid-rapidity Production of Neutral Pions in Polarized p+p Collisions at 200 GeV Center-of-Mass Energy
• Mapping the internal structure of hadrons through color and spin effects