Global Analysis of Helicity Parton Densities and Their Uncertainties - INSPIRE

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Global Analysis of Helicity Parton Densities and Their Uncertainties

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

Apr, 2008

4 pages

Published in:

Phys.Rev.Lett. 101 (2008) 072001

e-Print:

0804.0422 [hep-ph]

DOI:

10.1103/PhysRevLett.101.072001

Report number:

BNL-NT-08-8

View in:

ADS Abstract Service

reference search397 citations

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Abstract: (arXiv)

We present a new analysis of the helicity parton distributions of the nucleon. The analysis takes into account the available data from inclusive and semi-inclusive polarized deep inelastic scattering, as well as from polarized pp scattering at RHIC. For the first time, all theoretical calculations are performed fully at next-to-leading order (NLO) of perturbative QCD, using a method that allows to incorporate the NLO corrections in a very fast and efficient way in the analysis. We find evidence for a rather small gluon polarization in the nucleon, over a limited region of momentum fraction, and for interesting flavor patterns in the polarized sea.

Note:

4 pages, 3 figures

13.88.+e
13.60.Hb
13.85.Ni
12.38.Bx
lepton nucleon: deep inelastic scattering
lepton nucleon: inclusive reaction
hadron: electroproduction
nucleon: polarization
p p: inclusive reaction
spin: asymmetry

References(29)

Figures(3)

The Spin structure of the proton

Steven D. Bass
(
- Innsbruck U. and
- PSI, Villigen
)

- Rev.Mod.Phys. 77 (2005) 1257-1302
•
e-Print:
- hep-ph/0411005
•
DOI:
- 10.1103/RevModPhys.77.1257

Measurement of the x- and Q**2-dependence of the asymmetry A(1) on the nucleon

CLAS

Collaboration

•

K.V. Dharmawardane

et al.

- Phys.Lett.B 641 (2006) 11-17
•
e-Print:
- nucl-ex/0605028
•
DOI:
- 10.1016/j.physletb.2006.08.011

Quark helicity distributions in the nucleon for up, down, and strange quarks from semi-inclusive deep-inelastic scattering

HERMES

Collaboration

•

A. Airapetian
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.D 71 (2005) 012003
•
e-Print:
- hep-ex/0407032
•
DOI:
- 10.1103/PhysRevD.71.012003

Precise determination of the spin structure function g(1) of the proton, deuteron and neutron

HERMES

Collaboration

•

A. Airapetian
(
- Michigan U.
)

et al.

- Phys.Rev.D 75 (2007) 012007
•
e-Print:
- hep-ex/0609039
•
DOI:
- 10.1103/PhysRevD.75.012007

A Study of Exclusive Charmless Semileptonic B Decays and Extraction of $|V_{ub}|$ at CLEO

CLEO

Collaboration

•

R. Gray
(
- Carleton U.
)

et al.

- Phys.Rev.D 76 (2007) 012007,
- Phys.Rev.D 76 (2007) 3, 039901 (addendum)
•
e-Print:
- hep-ex/0703042
•
DOI:
- 10.1103/PhysRevD.76.012007

The Deuteron Spin-dependent Structure Function g1(d) and its First Moment

COMPASS

Collaboration

•

V.Yu. Alexakhin
(
- Dubna, JINR
)

et al.

- Phys.Lett.B 647 (2007) 8-17
•
e-Print:
- hep-ex/0609038
•
DOI:
- 10.1016/j.physletb.2006.12.076

The Polarised Valence Quark Distribution from semi-inclusive DIS

COMPASS

Collaboration

•

M. Alekseev
(
- Piemonte Orientale U., Alessandria and
- INFN, Turin
)

et al.

- Phys.Lett.B 660 (2008) 458-465
•
e-Print:
- 0707.4077
•
DOI:
- 10.1016/j.physletb.2007.12.056

Measurement of Parton Distributions of Strange Quarks in the Nucleon from Charged-Kaon Production in Deep-Inelastic Scattering on the Deuteron

HERMES

Collaboration

•

A. Airapetian
(
- Michigan U.
)

et al.

- Phys.Lett.B 666 (2008) 446-450
•
e-Print:
- 0803.2993
•
DOI:
- 10.1016/j.physletb.2008.07.090

Inclusive cross-section and double helicity asymmetry for $\pi^0$ production in $p + p$ collisions at $\sqrt{s} =$ 200 GeV: Implications for the polarized gluon distribution in the proton

PHENIX

Collaboration

•

A. Adare
(
- Colorado U.
)

et al.

- Phys.Rev.D 76 (2007) 051106
•
e-Print:
- 0704.3599
•
DOI:
- 10.1103/PhysRevD.76.051106

Longitudinal double-spin asymmetry for inclusive jet production in p+p collisions at s**(1/2) = 200-GeV

STAR

Collaboration

•

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

et al.

- Phys.Rev.Lett. 100 (2008) 232003
•
e-Print:
- 0710.2048
•
DOI:
- 10.1103/PhysRevLett.100.232003

Extraction of Delta(g)/g from HERMES data on inclusive charged hadrons

HERMES

Collaboration

•

P. Liebing
(
- RIKEN BNL
)

for the collaboration.

- AIP Conf.Proc. 915 (2007) 1, 331-334
•
e-Print:
- 0707.3617
•
DOI:
- 10.1063/1.2750789

Gluon polarization in the nucleon from quasi-real photoproduction of high-p(T) hadron pairs

COMPASS

Collaboration

•

E.S. Ageev

et al.

- Phys.Lett.B 633 (2006) 25-32
•
e-Print:
- hep-ex/0511028
•
DOI:
- 10.1016/j.physletb.2005.11.049

Models for the polarized parton distributions of the nucleon

- Phys.Rev.D 63 (2001) 094005
•
e-Print:
- hep-ph/0011215
•
DOI:
- 10.1103/PhysRevD.63.094005

QCD analysis of polarized deep inelastic data and parton distributions

J. Blumlein
(
- DESY, Zeuthen
)
,
H. Bottcher
(
- DESY, Zeuthen
)

- Nucl.Phys.B 636 (2002) 225-263
•
e-Print:
- hep-ph/0203155
•
DOI:
- 10.1016/S0550-3213(02)00342-5

The Statistical parton distributions: Status and prospects

Claude R.V. Bourrely
(
- Marseille, CPT
)
,
Jacques Soffer
(
- Marseille, CPT
)
,
Franco Buccella
(
- Naples U. and
- INFN, Naples
)

- Eur.Phys.J.C 41 (2005) 327-341
•
e-Print:
- hep-ph/0502180
•
DOI:
- 10.1140/epjc/s2005-02205-2

Polarized parton distributions and QCD analysis

Johannes Blumlein
(
- DESY, Zeuthen
)
,
H. Bottcher
(
- DESY, Zeuthen
)

- Nucl.Phys.A 721 (2003) 333-335
•
e-Print:
- hep-ph/0212410
•
DOI:
- 10.1016/S0375-9474(03)01062-5

Longitudinal polarized parton densities updated

- Phys.Rev.D 73 (2006) 034023
•
e-Print:
- hep-ph/0512114
•
DOI:
- 10.1103/PhysRevD.73.034023

Determination of polarized parton distribution functions with recent data on polarization asymmetries

M. Hirai
(
- KEK, Tsukuba
)
,
S. Kumano
(
- KEK, Tsukuba and
- Tsukuba, Graduate U. Adv. Studies
)
,
N. Saito
(
- Kyoto U.
)

- Phys.Rev.D 74 (2006) 014015
•
e-Print:
- hep-ph/0603213
•
DOI:
- 10.1103/PhysRevD.74.014015

Sea quark and gluon polarization in the nucleon at NLO accuracy

- Phys.Rev.D 71 (2005) 094018
•
e-Print:
- hep-ph/0504155
•
DOI:
- 10.1103/PhysRevD.71.094018

Constraints on gluon polarization in the nucleon at NLO accuracy

G.A. Navarro
(
- Buenos Aires U.
)
,
R. Sassot
(
- Buenos Aires U.
)

- Phys.Rev.D 74 (2006) 011502
•
e-Print:
- hep-ph/0605266
•
DOI:
- 10.1103/PhysRevD.74.011502

Towards a global analysis of polarized parton distributions

Marco Stratmann
(
- Regensburg U. and
- SUNY, Stony Brook
)
,
Werner Vogelsang
(
- Brookhaven and
- RIKEN BNL
)

- Phys.Rev.D 64 (2001) 114007
•
e-Print:
- hep-ph/0107064
•
DOI:
- 10.1103/PhysRevD.64.114007

Next-to-leading order QCD corrections to one hadron production in polarized pp collisions at RHIC

Daniel de Florian
(
- Buenos Aires U.
)

- Phys.Rev.D 67 (2003) 054004
•
e-Print:
- hep-ph/0210442
•
DOI:
- 10.1103/PhysRevD.67.054004

Next-to-leading order QCD corrections to high p(T) pion production in longitudinally polarized pp collisions

B. Jager
(
- Regensburg U.
)
,
A. Schafer
(
- Regensburg U.
)
,
M. Stratmann
(
- Regensburg U.
)
,
W. Vogelsang
(
- Brookhaven and
- RIKEN BNL
)

- Phys.Rev.D 67 (2003) 054005
•
e-Print:
- hep-ph/0211007
•
DOI:
- 10.1103/PhysRevD.67.054005

Single inclusive jet production in polarized $p p$ collisions at $O(alpha^3_s)$

B. Jager
(
- Regensburg U.
)
,
M. Stratmann
(
- Regensburg U.
)
,
W. Vogelsang
(
- Brookhaven and
- RIKEN BNL
)

- Phys.Rev.D 70 (2004) 034010
•
e-Print:
- hep-ph/0404057
•
DOI:
- 10.1103/PhysRevD.70.034010

Uncertainties of predictions from parton distribution functions. 1. The Lagrange multiplier method

et al.

- Phys.Rev.D 65 (2001) 014012
•
e-Print:
- hep-ph/0101051
•
DOI:
- 10.1103/PhysRevD.65.014012

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