Comparison of transverse single-spin asymmetries for forward $\pi^{0}$ production in polarized $pp$, $p\rm{Al}$ and $p\rm{Au}$ collisions at nucleon pair c.m. energy $\sqrt{s_{\mathrm{NN}}}= 200$ GeV - INSPIRE

DataBETA

Comparison of transverse single-spin asymmetries for forward $\pi^{0}$ production in polarized $pp$ , $p\rm{Al}$ and $p\rm{Au}$ collisions at nucleon pair c.m. energy $\sqrt{s_{\mathrm{NN}}}= 200$ GeV

STAR

Collaboration

Dec 13, 2020

20 pages

Published in:

Phys.Rev.D 103 (2021) 7, 072005

Published: Apr 17, 2021

e-Print:

2012.07146 [nucl-ex]

DOI:

10.1103/PhysRevD.103.072005

Experiments:

BNL-RHIC-STAR

View in:

ADS Abstract Service

reference search14 citations

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Abstract: (APS)

The STAR collaboration reports a measurement of the transverse single-spin asymmetries, AN, for neutral pions produced in polarized proton collisions with protons (pp), with aluminum nuclei (pAl) and with gold nuclei (pAu) at a nucleon-nucleon center-of-mass energy of 200 GeV. Neutral pions are observed in the forward direction relative to the transversely polarized proton beam, in the pseudorapidity region 2.7<η<3.8. Results are presented for π0s observed in the STAR forward meson spectrometer electromagnetic calorimeter in narrow Feynman x (xF) and transverse momentum (pT) bins, spanning the range 0.172.5 GeV/c. It is further observed that the value of AN is significantly larger for events with a large-pT isolated π0 than for events with a nonisolated π0 accompanied by additional jetlike fragments. The nuclear dependence r(A) is similar for isolated and nonisolated π0 events.

Particle Physics Experiments
p p: scattering
p nucleus: scattering
p: beam
calorimeter: electromagnetic
gluon: saturation
nucleon: pair
asymmetry
transverse momentum
STAR

References(39)

Figures(13)

[1]

Measurement of Asymmetries of Inclusive Pion Production in Proton Proton Interactions at 6-GeV/c and 11.8-GeV/c

R.D. Klem
(
- Argonne and
- Minnesota U. and
- Rice U.
)
,
J.E. Bowers
(
- Argonne and
- Minnesota U. and
- Rice U.
)
,
H.W. Courant
(
- Argonne and
- Minnesota U. and
- Rice U.
)
,
H. Kagan
(
- Argonne and
- Minnesota U. and
- Rice U.
)
,
M.L. Marshak
(
- Argonne and
- Minnesota U. and
- Rice U.
)

et al.

- Phys.Rev.Lett. 36 (1976) 929-931
•
DOI:
- 10.1103/PhysRevLett.36.929

[2]

Single Spin Asymmetry in Inclusive Reactions Polarized $P$ , $P$ Goes to $\pi^+$ , $\pi^-$ , and $P$ at High $P$ (t) at 13.3-{GeV}/ $c$ and 18.5-{GeV}/ $c$

et al.

- Phys.Rev.Lett. 64 (1990) 995
•
DOI:
- 10.1103/PhysRevLett.64.995

[3]

Comparison of Spin Asymmetries and Cross Sections in $\pi^0$ Production by 200 GeV Polarized Antiprotons and Protons

E581 and
E704

Collaborations

•

D.L. Adams
(
- Rice U.
)

et al.

- Phys.Lett.B 261 (1991) 201-206
•
DOI:
- 10.1016/0370-2693(91)91351-U

[4]

Analyzing Power in Inclusive $\pi^+$ and $\pi^-$ Production at High $\chi_F$ with a 200 GeV Polarized Proton Beam

FNAL-E704

Collaboration

•

D.L. Adams
(
- Rice U.
)

et al.

- Phys.Lett.B 264 (1991) 462-466
•
DOI:
- 10.1016/0370-2693(91)90378-4

[5]

Single Transverse Spin Asymmetries of Identified Charged Hadrons in Polarized p+p Collisions at s**(1/2) = 62.4-GeV

BRAHMS

Collaboration

•

I. Arsene
(
- Oslo U.
)

et al.

- Phys.Rev.Lett. 101 (2008) 042001
•
e-Print:
- 0801.1078
•
DOI:
- 10.1103/PhysRevLett.101.042001

[6]

Measurement of transverse-single-spin asymmetries for midrapidity and forward-rapidity production of hadrons in polarized p+p collisions at $\sqrt{s}=$ 200 and 62.4 GeV

PHENIX

Collaboration

•

A. Adare
(
- Colorado U.
)

et al.

- Phys.Rev.D 90 (2014) 1, 012006
•
e-Print:
- 1312.1995
•
DOI:
- 10.1103/PhysRevD.90.012006

[7]

Forward Neutral Pion Transverse Single Spin Asymmetries in p+p Collisions at s**(1/2) = 200-GeV

STAR

Collaboration

•

B.I. Abelev
(
- Illinois U., Chicago
)

et al.

- Phys.Rev.Lett. 101 (2008) 222001
•
e-Print:
- 0801.2990
•
DOI:
- 10.1103/PhysRevLett.101.222001

[8]

Inelastic Scattering of Polarized Leptons from Polarized Nucleons

J.D. Bjorken
(
- SLAC
)

- Phys.Rev.D 1 (1970) 1376-1379
•
DOI:
- 10.1103/PhysRevD.1.1376

[9]

Deep Inelastic Scattering of Polarized Electrons by Polarized Protons

et al.

- Phys.Rev.Lett. 37 (1976) 1261,
•
DOI:
- 10.1103/PhysRevLett.37.1261

[10]

A Measurement of the Spin Asymmetry and Determination of the Structure Function g(1) in Deep Inelastic Muon-Proton Scattering

European Muon

Collaboration

•

J. Ashman
(
- Sheffield U.
)

et al.

- Phys.Lett.B 206 (1988) 364,
•
DOI:
- 10.1016/0370-2693(88)91523-7

[11]

Extraction of Spin-Dependent Parton Densities and Their Uncertainties

Daniel de Florian
(
- Buenos Aires U.
)
,
Rodolfo Sassot
(
- Buenos Aires U.
)
,
Marco Stratmann
(
- Regensburg U. and
- Wurzburg U.
)
,
Werner Vogelsang
(
- Brookhaven
)

- Phys.Rev.D 80 (2009) 034030
•
e-Print:
- 0904.3821
•
DOI:
- 10.1103/PhysRevD.80.034030

[12]

A first unbiased global determination of polarized PDFs and their uncertainties

NNPDF

Collaboration

•

Emanuele R. Nocera
(
- INFN, Milan and
- Milan U.
)

et al.

- Nucl.Phys.B 887 (2014) 276-308
•
e-Print:
- 1406.5539
•
DOI:
- 10.1016/j.nuclphysb.2014.08.008

[13]

Evidence for polarization of gluons in the proton

Daniel de Florian
(
- Buenos Aires U.
)
,
Rodolfo Sassot
(
- Buenos Aires U.
)
,
Marco Stratmann
(
- Tubingen U. and
- Brookhaven
)
,
Werner Vogelsang
(
- Tubingen U.
)

- Phys.Rev.Lett. 113 (2014) 1, 012001
•
e-Print:
- 1404.4293
•
DOI:
- 10.1103/PhysRevLett.113.012001

[14]

Transverse Quark Polarization in Large p(T) Reactions, e+ e- Jets, and Leptoproduction: A Test of QCD

- Phys.Rev.Lett. 41 (1978) 1689
•
DOI:
- 10.1103/PhysRevLett.41.1689

[15]

Adv.Ser.Direct.High Energy Phys.

J.C. Collins
,
D.E. Soper
,
G.F. Sterman

[16]

Hard scattering scaling laws for single spin production asymmetries

Dennis W. Sivers
(
- Argonne
)

- Phys.Rev.D 43 (1991) 261-263
•
DOI:
- 10.1103/PhysRevD.43.261

[17]

Measuring transversity densities in singly polarized hadron hadron and lepton - hadron collisions

John C. Collins
(
- Penn State U.
)
,
Steve F. Heppelmann
(
- Penn State U.
)
,
Glenn A. Ladinsky
(
- Michigan State U.
)

- Nucl.Phys.B 420 (1994) 565-582
•
e-Print:
- hep-ph/9305309
•
DOI:
- 10.1016/0550-3213(94)90078-7

[18]

Single transverse spin asymmetries in hadronic pion production

Jian-wei Qiu
(
- Brookhaven
)
,
George F. Sterman
(
- SUNY, Stony Brook
)

- Phys.Rev.D 59 (1999) 014004
•
e-Print:
- hep-ph/9806356
•
DOI:
- 10.1103/PhysRevD.59.014004

[19]

Cross Sections and Transverse Single-Spin Asymmetries in Forward Jet Production from Proton Collisions at $\sqrt{s}=500$ GeV

AnDY

Collaboration

•

L.C. Bland
(
- Brookhaven
)

et al.

- Phys.Lett.B 750 (2015) 660-665
•
e-Print:
- 1304.1454
•
DOI:
- 10.1016/j.physletb.2015.10.001

[20]

Initial state interactions and single spin asymmetries in Drell-Yan processes

Stanley J. Brodsky
(
- SLAC
)
,
Dae Sung Hwang
(
- SLAC and
- Sejong U.
)
,
Ivan Schmidt
(
- Santa Maria U., Valparaiso
)

- Nucl.Phys.B 642 (2002) 344-356
•
e-Print:
- hep-ph/0206259
•
DOI:
- 10.1016/S0550-3213(02)00617-X

[21]

Leading twist single transverse-spin asymmetries: Drell-Yan and deep inelastic scattering

John C. Collins
(
- Penn State U.
)

- Phys.Lett.B 536 (2002) 43-48
•
e-Print:
- hep-ph/0204004
•
DOI:
- 10.1016/S0370-2693(02)01819-1

[22]

Single transverse-spin asymmetry in high transverse momentum pion production in pp collisions

Chris Kouvaris
(
- Bohr Inst.
)
,
Jian-Wei Qiu
(
- Iowa State U. and
- Brookhaven
)
,
Werner Vogelsang
(
- Brookhaven
)
,
Feng Yuan
(
- RIKEN BNL
)

- Phys.Rev.D 74 (2006) 114013
•
e-Print:
- hep-ph/0609238
•
DOI:
- 10.1103/PhysRevD.74.114013

[23]

Sivers effect and the single spin asymmetry $A_{N}$ in $p^{\uparrow} p \to hX$ processes

M. Anselmino
(
- INFN, Turin and
- Turin U.
)
,
M. Boglione
(
- INFN, Turin and
- Turin U.
)
,
U. D'Alesio
(
- INFN, Cagliari and
- Cagliari U.
)
,
S. Melis
(
- INFN, Turin and
- Turin U.
)
,
F. Murgia
(
- INFN, Cagliari
)

et al.

- Phys.Rev.D 88 (2013) 5, 054023
•
e-Print:
- 1304.7691
•
DOI:
- 10.1103/PhysRevD.88.054023

[24]

Towards an explanation of transverse single-spin asymmetries in proton-proton collisions: the role of fragmentation in collinear factorization

Koichi Kanazawa
(
- Niigata U., Grad. Sch. Sci. Tech. and
- Temple U.
)
,
Yuji Koike
(
- Niigata U.
)
,
Andreas Metz
(
- Temple U.
)
,
Daniel Pitonyak
(
- RIKEN BNL
)

- Phys.Rev.D 89 (2014) 11, 111501
•
e-Print:
- 1404.1033
•
DOI:
- 10.1103/PhysRevD.89.111501

[25]

Transverse single-spin asymmetries in proton-proton collisions at the AFTER@LHC experiment in a TMD factorisation scheme

M. Anselmino
(
- Turin U. and
- INFN, Turin
)
,
U. D'Alesio
(
- Cagliari U. and
- INFN, Cagliari
)
,
S. Melis
(
- Turin U.
)

- Adv.High Energy Phys. 2015 (2015) 475040
•
e-Print:
- 1504.03791
•
DOI:
- 10.1155/2015/475040

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