Sivers and Collins Single Spin Asymmetries

A.V. Efremov; K.Goeke; P.Schweitzer

RECORD

Sivers and Collins Single Spin Asymmetries

A.V. Efremov, K.Goeke, P.Schweitzer

High Energy Physics - Phenomenology · Submitted 15 Jan 2008

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim The Sivers and Collins asymmetries are the most prominent Single Spin Asymmetries (SSA)in Semi-Inclusive Deeply Inelastic Scattering (SIDIS)with transverse target polarization.

how it is stated · asserted 1.00 read the record →

Comment (0) Read on arXiv ↗

Cite ▾

Claim paper

The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

Open the compiled record

Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 2,251 input tokens, $0.0001 reported.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.05 · human participants 0.08 · controlled comparison 0.02 · randomized assignment 0.01 · states quantitative result 0.03 · compares with prior results 0.04 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v2. Results and the main claim are underlined; show every role.

The Sivers and Collins asymmetries are the most prominent Single Spin Asymmetries (SSA)in Semi-Inclusive Deeply Inelastic Scattering (SIDIS)with transverse target polarization. In this talk we present our understanding of these phenomena.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	The Sivers and Collins asymmetries are the most prominent Single Spin Asymmetries (SSA)in Semi-Inclusive Deeply Inelastic Scattering (SIDIS)with transverse target polarization.	background 1.00	0.06	0.10	asserted 1.00
s1	In this talk we present our understanding of these phenomena.	contribution 0.99	0.26	0.04	unclear 0.51

What kind of paper the classifier reports this is: review 0.81 · evidence from argument 0.87.

What was examined, and what was not

sources read

arXiv listing abstract v2

not examined

full text
figures and tables
references and citing sentences
relations to other papers

levels run

P abstract

not run

S sections
T body sentences
C citations
R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

The Sivers and Collins asymmetries are the most prominent Single Spin Asymmetries (SSA)in Semi-Inclusive Deeply Inelastic Scattering (SIDIS)with transverse target polarization. In this talk we present our understanding of these phenomena.

Human review

How Pith checks papers → · Full audit of this paper →

References

How the literature uses it

1 arXiv paper cite this in 1 sentence

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers whose main result relates to this one's

Found among the papers closest to this one by title and main claim. Pith's classifier compared each pair's main results and a second model family confirmed the relation; checked against two further families, shown conflicts agreed 118 times in 120 and shown same results 218 times in 239. The quoted sentence is the other paper's main claim.

States the same result 1 paper

The Sivers and Collins asymmetries are the most interesting Single Spin Asymmetries in semi-inclusive deeply inelastic scattering with transverse target polarization.

Status of Sivers and Collins Single Spin Asymmetries · 1.00

What it cites · 43 sentences without a confident label

Uses the method or tool of 1 paper

We assume a factorized Gaussian dependence on parton and hadron transverse momenta [ref] with $B_G(z)=(1+z^2 p_h_1^2/K^2_H_1)^-1/2$ and define $H_1^(z) ≡H_1^⊥(1/2) a(z)=$ $∫^2K_T|K_T|/2zm_π H_1^⊥a(z,K_T)$.

Time-reversal odd distribution functions in leptoproduction · Transversity and Collins effect · 0.93

Uses data or values from 4 papers

The Sivers SSA as measured in [ref] is then given by [ref]

Sivers effect in semi-inclusive deeply inelastic scattering · Sivers effect · 0.85
In order to answer this question we extract $H_1^a$ from HERMES [ref] and BELLE [ref] data, and compare the ratios $H_1^a/D_1^a$ from these and other experiments.

Transversity measurements at HERMES · Transversity and Collins effect · 0.97
But for $K^+$ in the region of $x = (0.05-0.15)$ the SSA is about (2-3) times larger than the $π^+$ SSA [ref] , while for $x≥0.15$ the $K^+$ and $π^+$ SSAs are of comparable size within error bars.

Azimuthal single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarised hydrogen target · New data and developements · 0.93

Compares with 1 paper

In order to compare Collins effect in SIDIS at HERMES [ref] and in $e^+e^-$-annihilation at BELLE [ref] we consider the ratios $H_1^a/D_1^a$ which might be less scale dependent.

Transversity measurements at HERMES · Transversity and Collins effect · 0.84

Cites as support 1 paper

This conclusion is supported by a simultanuous analysis of HERMES, COMPASS and BELLE data [ref] with additional conclusion on the tendency of $h_1^d(x)$ to be negative.

Transversity and Collins functions from SIDIS and e+e- data · Conclusions · 0.98

Cites as background 3 papers

The transversity distribution function $h_1^a(x)$ enters the expression for the Collins SSA in SIDIS together with the equally unknown Collins fragmentation function [ref] (FF) $H_1^a(z)$[]

Fragmentation of Transversely Polarized Quarks Probed in Transverse Momentum Distributions · Transversity and Collins effect · 0.92
No fully consistent and satisfactory unifying approach to the theoretical description of these observations has been found so far — see the review [ref] .

Single spin asymmetries in QCD · Introduction · 0.97
While the Sivers and Collins effects are the most prominent effects, it is important to keep in mind that there are further equally fascinating effects to be explored [ref] .

Are there approximate relations among transverse momentum dependent distribution functions? · Conclusions · 0.85

Discussion

Know something about this paper? Leave a comment, or highlight any passage above to comment on it.