Predictions for Sivers single spin asymmetries in one- and two-hadron electroproduction at CLAS12 and EIC

Matevosyan, Hrayr H.; Kotzinian, Aram; Aschenauer, Elke -Caroline; Avakian, Harut A.; Thomas, Anthony W.

doi:10.1103/PhysRevD.92.054028

Predictions for Sivers single spin asymmetries in one- and two-hadron electroproduction at CLAS12 and EIC

Journal Article · Wed Sep 23 00:00:00 EDT 2015 · Physical Review. D, Particles, Fields, Gravitation and Cosmology

DOI:https://doi.org/10.1103/PhysRevD.92.054028· OSTI ID:1221544

Matevosyan, Hrayr H. ^[1]; Kotzinian, Aram ^[2]; Aschenauer, Elke -Caroline ^[3]; Avakian, Harut A. ^[4]; Thomas, Anthony W. ^[1]

Univ. of Adelaide, Adelaide (Australia)
Yerevan Physics Inst. (YerPhI), Yerevan (Armenia); Sezione di Torino, Torino (Italy)
Brookhaven National Lab. (BNL), Upton, NY (United States)
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

The study of the Sivers effect, describing correlations between the transverse polarization of the nucleon and its constituent (unpolarized) parton's transverse momentum, has been the topic of a great deal of experimental, phenomenological and theoretical effort in recent years. Semi-Inclusive Deep Inelastic Scattering measurements of the corresponding single spin asymmetries (SSA) at the upcoming CLAS12 experiment at JLab and the proposed Electron-Ion Collider will help to pinpoint the flavor structure and the momentum dependence of the Sivers parton distribution function describing this effect. Here we describe a modified version of the $$\tt{PYTHIA}$$ Monte Carlo event generator that includes the Sivers effect. Then we use it to estimate the size of these SSAs, in the kinematics of these experiments, for both one and two hadron final states of pions and kaons. For this purpose we utilize the existing Sivers parton distribution function (PDF) parametrization extracted from HERMES and COMPASS experiments. Furthermore, we also show that the the leading order approximation commonly used in such extractions provides significantly underestimated values of Sivers PDFs, as the omitted parton showers and non-DIS processes play an important role in these SSAs at lower light-cone momentum fraction, for example in the COMPASS kinematics.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Lab. (BNL), Upton, NY (United States); Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: AC05-06OR23177; SC0012704

OSTI ID:: 1221544

Alternate ID(s):: OSTI ID: 1227323
OSTI ID: 1234363

Report Number(s):: BNL--108601-2015-JA; DOE/OR/23177--3330; JLAB-PHY--15-2026; arXiv:1502.02669

Journal Information:: Physical Review. D, Particles, Fields, Gravitation and Cosmology, Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology Journal Issue: 5 Vol. 92; ISSN PRVDAQ; ISSN 1550-7998

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

References (27)

Fracture functions. An improved description of inclusive hard processes in QCD Trentadue, L.; Veneziano, G. Physics Letters B, Vol. 323, Issue 2 https://doi.org/10.1016/0370-2693(94)90292-5	journal	March 1994
SIDIS in the target fragmentation region: Polarized and transverse-momentum dependent fracture functions Anselmino, M.; Barone, V.; Kotzinian, A. Physics Letters B, Vol. 699, Issue 1-2 https://doi.org/10.1016/j.physletb.2011.03.067	journal	May 2011
Transverse spin effects in hadron-pair production from semi-inclusive deep inelastic scattering Adolph, C.; Alekseev, M. G.; Alexakhin, V. Yu. Physics Letters B, Vol. 713, Issue 1 https://doi.org/10.1016/j.physletb.2012.05.015	journal	June 2012
II – Experimental investigation of transverse spin asymmetries in μ-p SIDIS processes: Sivers asymmetries Adolph, C.; Alekseev, M. G.; Alexakhin, V. Yu. Physics Letters B, Vol. 717, Issue 4-5 https://doi.org/10.1016/j.physletb.2012.09.056	journal	October 2012
Collins and Sivers asymmetries in muonproduction of pions and kaons off transversely polarised protons Adolph, C.; Akhunzyanov, R.; Alexeev, M. G. Physics Letters B, Vol. 744 https://doi.org/10.1016/j.physletb.2015.03.056	journal	May 2015
Sivers Effect in Dihadron Electroproduction Kotzinian, Aram; Matevosyan, Hrayr H.; Thomas, Anthony W. EPJ Web of Conferences, Vol. 85 https://doi.org/10.1051/epjconf/20158502026	journal	January 2015
Transversity measurements at HERMES Diefenthaler, Markus DEEP INELASTIC SCATTERING: 13th International Workshop on Deep Inelastic Scattering; DIS 2005, AIP Conference Proceedings https://doi.org/10.1063/1.2122190	conference	January 2005
Analyzing Unfavored Fragmentation Functions Using NJL-Jet Model Matevosyan, Hrayr H.; Thomas, Anthony W.; Bentz, Wolfgang 12TH INTERNATIONAL CONFERENCE ON MESON-NUCLEON PHYSICS AND THE STRUCTURE OF THE NUCLEON (MENU 2010), AIP Conference Proceedings https://doi.org/10.1063/1.3647165	conference	January 2011
PYTHIA 6.4 physics and manual Sjöstrand, Torbjörn; Mrenna, Stephen; Skands, Peter Journal of High Energy Physics, Vol. 2006, Issue 05 https://doi.org/10.1088/1126-6708/2006/05/026	journal	May 2006
Semi-inclusive deep inelastic scattering at small transverse momentum Bacchetta, Alessandro; Diehl, Markus; Goeke, Klaus Journal of High Energy Physics, Vol. 2007, Issue 02 https://doi.org/10.1088/1126-6708/2007/02/093	journal	February 2007
Evidence for a transverse single-spin asymmetry in leptoproduction of π ⁺ π ⁻ pairs collaboration, Hermes Journal of High Energy Physics, Vol. 2008, Issue 06 https://doi.org/10.1088/1126-6708/2008/06/017	journal	June 2008
Single-spin production asymmetries from the hard scattering of pointlike constituents Sivers, Dennis Physical Review D, Vol. 41, Issue 1 https://doi.org/10.1103/PhysRevD.41.83	journal	January 1990
Two-hadron interference fragmentation functions. I. General framework Bianconi, A.; Boffi, S.; Jakob, R. Physical Review D, Vol. 62, Issue 3 https://doi.org/10.1103/PhysRevD.62.034008	journal	July 2000
Role of Cahn and Sivers effects in deep inelastic scattering Anselmino, M.; Boglione, M.; D’Alesio, U. Physical Review D, Vol. 71, Issue 7 https://doi.org/10.1103/PhysRevD.71.074006	journal	April 2005
Extracting the Sivers function from polarized semi-inclusive deep inelastic scattering data and making predictions Anselmino, M.; Boglione, M.; D’Alesio, U. Physical Review D, Vol. 72, Issue 9 https://doi.org/10.1103/PhysRevD.72.094007	journal	November 2005
Calculating kaon fragmentation functions from the Nambu–Jona-Lasinio jet model Matevosyan, Hrayr H.; Thomas, Anthony W.; Bentz, Wolfgang Physical Review D, Vol. 83, Issue 7 https://doi.org/10.1103/PhysRevD.83.074003	journal	April 2011
Strategy towards the extraction of the Sivers function with transverse momentum dependent evolution Anselmino, M.; Boglione, M.; Melis, S. Physical Review D, Vol. 86, Issue 1 https://doi.org/10.1103/PhysRevD.86.014028	journal	July 2012
QCD evolution of the Sivers asymmetry Echevarria, Miguel G.; Idilbi, Ahmad; Kang, Zhong-Bo Physical Review D, Vol. 89, Issue 7 https://doi.org/10.1103/PhysRevD.89.074013	journal	April 2014
Sivers effect in dihadron semi-inclusive deep inelastic scattering Kotzinian, Aram; Matevosyan, Hrayr H.; Thomas, Anthony W. Physical Review D, Vol. 90, Issue 7 https://doi.org/10.1103/PhysRevD.90.074006	journal	October 2014
Azimuthal correlations in the structure functions of polarized dihadron semi-inclusive deep inelastic scattering Kotzinian, Aram Physical Review D, Vol. 91, Issue 5 https://doi.org/10.1103/PhysRevD.91.054001	journal	March 2015
Understanding the large-distance behavior of transverse-momentum-dependent parton densities and the Collins-Soper evolution kernel Collins, John; Rogers, Ted Physical Review D, Vol. 91, Issue 7 https://doi.org/10.1103/PhysRevD.91.074020	journal	April 2015
Observation of the Naive- T -Odd Sivers Effect in Deep-Inelastic Scattering Airapetian, A.; Akopov, N.; Akopov, Z. Physical Review Letters, Vol. 103, Issue 15 https://doi.org/10.1103/PhysRevLett.103.152002	journal	October 2009
Single Spin Asymmetries in Charged Pion Production from Semi-Inclusive Deep Inelastic Scattering on a Transversely Polarized He 3 Target at Q 2 = 1.4 – 2.7 GeV 2 Qian, X.; Allada, K.; Dutta, C. Physical Review Letters, Vol. 107, Issue 7 https://doi.org/10.1103/PhysRevLett.107.072003	journal	August 2011
Sivers Effect in Two-Hadron Electroproduction Kotzinian, Aram; Matevosyan, Hrayr H.; Thomas, Anthony W. Physical Review Letters, Vol. 113, Issue 6 https://doi.org/10.1103/PhysRevLett.113.062003	journal	August 2014
Single-Spin Asymmetries in Semi-Inclusive Deep-Inelastic Scattering on a Transversely Polarized Hydrogen Target Airapetian, A.; Akopov, N.; Akopov, Z. Physical Review Letters, Vol. 94, Issue 1 https://doi.org/10.1103/PhysRevLett.94.012002	journal	January 2005
First Measurement of the Transverse Spin Asymmetries of the Deuteron in Semi-inclusive Deep Inelastic Scattering Alexakhin, V. Yu.; Alexandrov, Yu.; Alexeev, G. D. Physical Review Letters, Vol. 94, Issue 20 https://doi.org/10.1103/PhysRevLett.94.202002	journal	May 2005
Sivers effect for pion and kaon production in semi-inclusive deep inelastic scattering Anselmino, M.; Boglione, M.; D’Alesio, U. The European Physical Journal A, Vol. 39, Issue 1 https://doi.org/10.1140/epja/i2008-10697-y	journal	December 2008

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Cos ϕ R asymmetry of dihadron production in double longitudinally polarized SIDIS Yang, Wei; Li, Hui; Lu, Zhun Physical Review D, Vol. 100, Issue 7 https://doi.org/10.1103/physrevd.100.074033	journal	October 2019
Double spin asymmetry in dihadron production in SIDIS off a longitudinally polarized nucleon target Luo, Xuan; Sun, Hao; Li, Jing Physical Review D, Vol. 100, Issue 9 https://doi.org/10.1103/physrevd.100.094036	journal	November 2019
Accessing the gluon Sivers function at a future electron-ion collider Zheng, L.; Aschenauer, E. C.; Lee, J. H. Physical Review D, Vol. 98, Issue 3 https://doi.org/10.1103/physrevd.98.034011	journal	August 2018

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