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Related papers: Single-Transverse Spin Asymmetry in Dijet Correlat…

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We study the single spin asymmetry in the back-to-back dijet production in transversely polarized proton-proton collisions. Such an asymmetry is generated by the Sivers functions in the incoming polarized proton. We propose a QCD formalism…

High Energy Physics - Phenomenology · Physics 2022-12-06 Zhong-Bo Kang , Kyle Lee , Ding Yu Shao , John Terry

We study the single-spin (left-right) asymmetry in single-inclusive pion production in hadronic scattering. This asymmetry is power-suppressed in the transverse momentum of the produced pion and can be analyzed in terms of twist-three…

High Energy Physics - Phenomenology · Physics 2008-11-26 Chris Kouvaris , Jian-Wei Qiu , Werner Vogelsang , Feng Yuan

We study single-spin asymmetries in semi-inclusive deep inelastic scattering with transversely polarized target. Based on the QCD factorization approach, we consider Sivers and Collins contributions to the asymmetries. We fit simple…

High Energy Physics - Phenomenology · Physics 2010-04-06 Werner Vogelsang , Feng Yuan

We propose that back-to-back correlations in azimuthal angle of jets produced in collisions of unpolarized with transversely polarized proton beams could be used to determine Sivers functions. The corresponding single-spin asymmetry is not…

High Energy Physics - Phenomenology · Physics 2008-11-26 Daniel Boer , Werner Vogelsang

We study the single transverse-spin asymmetry for the inclusive direct-photon and single-jet productions in the proton-proton collision based on the twist-3 mechanism in the collinear factorization. Taking into account all the effects from…

High Energy Physics - Phenomenology · Physics 2015-06-12 Koichi Kanazawa , Yuji Koike

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…

High Energy Physics - Phenomenology · Physics 2011-06-24 Koichi Kanazawa , Yuji Koike

We consider longitudinal, parity-violating single-spin asymmetries in proton-proton collisions at RHIC. The focus of this study is on the production of single-inclusive jets, as well as on jets that contain a charm quark. While the…

High Energy Physics - Phenomenology · Physics 2008-07-28 S. Arnold , A. Metz , W. Vogelsang

We study a weighted asymmetry in the azimuthal distribution of photon-jet pairs produced in the process p^\uparrow p --> \gamma jet X with a transversely polarized proton. We focus on the contribution of the Sivers effect only, considering…

High Energy Physics - Phenomenology · Physics 2008-11-26 Alessandro Bacchetta , Cedran Bomhof , Umberto D'Alesio , P. J. Mulders , F. Murgia

We study the Collins mechanism contribution to the single transverse spin asymmetry in inclusive hadron production in pp scattering p^{\uparrow}p\to \pi X from the leading jet fragmentation. The azimuthal asymmetric distribution of hadron…

High Energy Physics - Phenomenology · Physics 2008-11-26 Feng Yuan

We analyze the single transverse-spin asymmetry (SSAs) for inclusive hadron production in the $pp$ collision at RHIC based on the twist-3 mechanism in QCD. As an origin of SSAs, we take into account of all kinds of pole contributions…

High Energy Physics - Phenomenology · Physics 2014-11-21 Koichi Kanazawa , Yuji Koike

We present results for transverse single-spin asymmetries in proton-proton collisions at kinematics relevant for AFTER, a proposed fixed-target experiment at the Large Hadron Collider. These include predictions for pion, jet, and direct…

High Energy Physics - Phenomenology · Physics 2015-04-30 K. Kanazawa , Y. Koike , A. Metz , D. Pitonyak

We investigate the single-spin asymmetry for the single-inclusive production of hadrons and jets in collisions of transversely polarized nucleons and unpolarized leptons, $\ell N^\uparrow \to (h\,\mathrm{or\,jet})X$. We compute the…

High Energy Physics - Phenomenology · Physics 2025-12-19 Daniel Rein , Marc Schlegel , Patrick Tollkühn , Werner Vogelsang

We investigate all the possible spin asymmetries that can occur in back-to-back electron-jet production with hadron observed inside a jet in electron-proton collisions. We derive the factorization formalism for all spin asymmetries and…

High Energy Physics - Phenomenology · Physics 2023-01-18 Zhong-Bo Kang , Kyle Lee , Ding Yu Shao , Fanyi Zhao

A single-spin asymmetry was measured in the azimuthal distribution of pi+pi- pairs produced in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target. For the first time, evidence is found for a correlation…

High Energy Physics - Experiment · Physics 2009-03-19 HERMES Collaboration , A. Airapetian

We study the single transverse-spin asymmetry for dijet production in hadronic collisions in both the collinear QCD factorization approach and the Brodsky-Hwang-Schmidt model. We show that a nonvanishing asymmetry is generated by both…

High Energy Physics - Phenomenology · Physics 2008-11-26 Jian-Wei Qiu , Werner Vogelsang , Feng Yuan

We review some recent experimental and theoretical work on the correlation among hadrons produced at intermediate $p_T$ at RHIC. The topics include: forward and backward asymmetry with and without trigger at mid-rapidity,…

Nuclear Theory · Physics 2008-11-26 Rudolph C. Hwa

We analyze single transverse-spin asymmetries for hadronic pion production at large transverse momenta using QCD factorization. In the large $x_F$ region, leading contributions to the asymmetries are naturally produced by twist-3 parton…

High Energy Physics - Phenomenology · Physics 2014-11-17 Jianwei Qiu , George Sterman

We compare several recent theoretical studies of the single transverse spin asymmetry in dijet-correlations at hadron colliders. We show that the results of these studies are all consistent. To establish this, we investigate in particular…

High Energy Physics - Phenomenology · Physics 2008-11-26 Werner Vogelsang , Feng Yuan

The first measurements of $x_F$-dependent single spin asymmetries of identified charged hadrons, $\pi^{\pm}$, $K^{\pm}$, and protons, from transversely polarized proton-proton collisions at 62.4 GeV at RHIC are presented. The measurements…

Nuclear Experiment · Physics 2008-11-26 BRAHMS Collaboration , I. Arsene

We investigate the scaling properties in inclusive hadron production and the associated single transverse spin asymmetry in the forward rapidity region at RHIC. We find that the spin-averaged experimental data in both $pp$ and $dAu$…

High Energy Physics - Phenomenology · Physics 2011-09-08 Zhong-Bo Kang , Feng Yuan
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