Connections between TMD and Collinear Twist-3 Functions within the Context of Single-Spin Asymmetries

Pitonyak Daniel, Gamberg Leonard, Metz Andreas, Prokudin Alexei

Research output: Contribution to journalConference article

Abstract

We review the theoretical framework underlying the description of transverse single-spin asymmetries (SSAs) for both collinear and transverse-momentum-dependent (TMD) processes. For the latter, we discuss modifications to the widely used CSS formalism that are needed to address certain issues that have arisen in TMD analyses. After these improvements, one can derive rigorous relations between collinear and TMD functions. Moreover, we show how both collinear and TMD SSA observables are driven by multi-parton correlations, which allows for a future global extraction to be performed including data from both types of measurements.

Original languageEnglish (US)
JournalProceedings of Science
Volume2017-May
StatePublished - Jan 1 2017
Event2017 QCD Evolution, QCDEV 2017 - Newport News, United States
Duration: May 22 2017May 26 2017

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transverse momentum
asymmetry
partons
formalism

All Science Journal Classification (ASJC) codes

  • General

Cite this

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title = "Connections between TMD and Collinear Twist-3 Functions within the Context of Single-Spin Asymmetries",
abstract = "We review the theoretical framework underlying the description of transverse single-spin asymmetries (SSAs) for both collinear and transverse-momentum-dependent (TMD) processes. For the latter, we discuss modifications to the widely used CSS formalism that are needed to address certain issues that have arisen in TMD analyses. After these improvements, one can derive rigorous relations between collinear and TMD functions. Moreover, we show how both collinear and TMD SSA observables are driven by multi-parton correlations, which allows for a future global extraction to be performed including data from both types of measurements.",
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Connections between TMD and Collinear Twist-3 Functions within the Context of Single-Spin Asymmetries. / Daniel, Pitonyak; Leonard, Gamberg; Andreas, Metz; Alexei, Prokudin.

In: Proceedings of Science, Vol. 2017-May, 01.01.2017.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Connections between TMD and Collinear Twist-3 Functions within the Context of Single-Spin Asymmetries

AU - Daniel, Pitonyak

AU - Leonard, Gamberg

AU - Andreas, Metz

AU - Alexei, Prokudin

PY - 2017/1/1

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N2 - We review the theoretical framework underlying the description of transverse single-spin asymmetries (SSAs) for both collinear and transverse-momentum-dependent (TMD) processes. For the latter, we discuss modifications to the widely used CSS formalism that are needed to address certain issues that have arisen in TMD analyses. After these improvements, one can derive rigorous relations between collinear and TMD functions. Moreover, we show how both collinear and TMD SSA observables are driven by multi-parton correlations, which allows for a future global extraction to be performed including data from both types of measurements.

AB - We review the theoretical framework underlying the description of transverse single-spin asymmetries (SSAs) for both collinear and transverse-momentum-dependent (TMD) processes. For the latter, we discuss modifications to the widely used CSS formalism that are needed to address certain issues that have arisen in TMD analyses. After these improvements, one can derive rigorous relations between collinear and TMD functions. Moreover, we show how both collinear and TMD SSA observables are driven by multi-parton correlations, which allows for a future global extraction to be performed including data from both types of measurements.

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