DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: New parton distributions from large-x and low-Q2 data

Abstract

We report results of a new global next-to-leading order fit of parton distribution functions in which cuts on W and Q are relaxed, thereby including more data at high values of x. Effects of target mass corrections (TMCs), higher twist contributions, and nuclear corrections for deuterium data are significant in the large-x region. The leading twist parton distributions are found to be stable to TMC model variations as long as higher twist contributions are also included. Furthermore, the behavior of the d quark as x → 1 is particularly sensitive to the deuterium corrections, and using realistic nuclear smearing models the d-quark distribution at large x is found to be softer than in previous fits performed with more restrictive cuts.

Authors:
;  [1];  [2];  [3];  [1];  [4];  [5]
  1. Hampton Univ., Hampton, VA (United States)
  2. Hampton Univ., Hampton, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  3. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  4. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  5. Florida State Univ., Tallahassee, FL (United States)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
983651
Report Number(s):
JLAB-THY-09-1105; DOE/OR/23177-1052
Journal ID: ISSN 1550-7998; PRVDAQ; TRN: US1004595
Grant/Contract Number:  
AC05-06OR23177
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 81; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; D QUARKS; DEUTERIUM; DISTRIBUTION; DISTRIBUTION FUNCTIONS; TARGETS

Citation Formats

Alberto Accardi, Christy, M. Eric, Keppel, Cynthia E., Melnitchouk, Wally, Monaghan, Peter A., Morfin, Jorge G., and Owens, Joseph F. New parton distributions from large-x and low-Q2 data. United States: N. p., 2010. Web. doi:10.1103/PhysRevD.81.034016.
Alberto Accardi, Christy, M. Eric, Keppel, Cynthia E., Melnitchouk, Wally, Monaghan, Peter A., Morfin, Jorge G., & Owens, Joseph F. New parton distributions from large-x and low-Q2 data. United States. https://doi.org/10.1103/PhysRevD.81.034016
Alberto Accardi, Christy, M. Eric, Keppel, Cynthia E., Melnitchouk, Wally, Monaghan, Peter A., Morfin, Jorge G., and Owens, Joseph F. Thu . "New parton distributions from large-x and low-Q2 data". United States. https://doi.org/10.1103/PhysRevD.81.034016. https://www.osti.gov/servlets/purl/983651.
@article{osti_983651,
title = {New parton distributions from large-x and low-Q2 data},
author = {Alberto Accardi and Christy, M. Eric and Keppel, Cynthia E. and Melnitchouk, Wally and Monaghan, Peter A. and Morfin, Jorge G. and Owens, Joseph F.},
abstractNote = {We report results of a new global next-to-leading order fit of parton distribution functions in which cuts on W and Q are relaxed, thereby including more data at high values of x. Effects of target mass corrections (TMCs), higher twist contributions, and nuclear corrections for deuterium data are significant in the large-x region. The leading twist parton distributions are found to be stable to TMC model variations as long as higher twist contributions are also included. Furthermore, the behavior of the d quark as x → 1 is particularly sensitive to the deuterium corrections, and using realistic nuclear smearing models the d-quark distribution at large x is found to be softer than in previous fits performed with more restrictive cuts.},
doi = {10.1103/PhysRevD.81.034016},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = ,
volume = 81,
place = {United States},
year = {Thu Feb 11 00:00:00 EST 2010},
month = {Thu Feb 11 00:00:00 EST 2010}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 73 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Implications of CTEQ global analysis for collider observables
journal, July 2008


Parton distributions for the LHC
journal, July 2009


Precision determination of electroweak parameters and the strange content of the proton from neutrino deep-inelastic scattering
journal, December 2009


Quark–hadron duality in electron scattering
journal, January 2005


Unified description of inclusive and exclusive reactions at all momentum transfers
journal, November 1974


Isolating the 3-quark component of the proton's wave function
journal, July 1974


structure function ratio at large x
journal, June 1996


Large-x parton distributions
journal, March 2000


Parton distributions from deep-inelastic-scattering data
journal, July 2003


Fixed target Drell-Yan data and NNLO QCD fits of parton distribution functions
journal, September 2006


New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
journal, July 2002


Inclusive jet production, parton distributions, and the search for new physics
journal, October 2003


Uncertainties of predictions from parton distributions II: theoretical errors
journal, June 2004

  • Martin, A. D.; Roberts, R. G.; Stirling, W. J.
  • The European Physical Journal C, Vol. 35, Issue 3
  • DOI: 10.1140/epjc/s2004-01825-2

Total neutron cross sections may not be what they seem to be
journal, December 1971


The EMC effect-with emphasis on conventional nuclear corrections
journal, October 1989

  • Bickerstaff, R. P.; Thomas, A. W.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 15, Issue 10
  • DOI: 10.1088/0954-3899/15/10/006

The Nuclear EMC Effect
journal, December 1995


Shadowing, binding, and off-shell effects in nuclear deep-inelastic scattering
journal, August 1994


Spin-dependent nuclear structure functions: General approach with application to the deuteron
journal, August 1995


Deuteron spin structure functions in the resonance and deep inelastic scattering regions
journal, January 2008


Spin structure functions of He 3 at finite Q 2
journal, December 2008


Global study of nuclear structure functions
journal, January 2006


New method for extracting neutron structure functions from nuclear data
journal, March 2009


Parametrization of the Paris N N potential
journal, March 1980


Accurate nucleon-nucleon potential with charge-independence breaking
journal, January 1995

  • Wiringa, R. B.; Stoks, V. G. J.; Schiavilla, R.
  • Physical Review C, Vol. 51, Issue 1
  • DOI: 10.1103/PhysRevC.51.38

High-precision, charge-dependent Bonn nucleon-nucleon potential
journal, January 2001


Relativistic deuteron structure function
journal, August 1994


Deep-inelastic scattering from off-shell nucleons
journal, February 1994


Family of relativistic deuteron wave functions
journal, November 1979


Covariant spectator theory of np scattering: Phase shifts obtained from precision fits to data below 350 MeV
journal, July 2008


Non-singlet QCD analysis of deep inelastic world data at
journal, July 2007


Measurement of the A dependence of deep-inelastic electron scattering
journal, May 1994


Point-like configurations in hadrons and nuclei and deep inelastic reactions with leptons: EMC and EMC-like effects
journal, January 1985


Hard nuclear processes and microscopic nuclear structure
journal, April 1988


Comment on “Parton Distributions, d / u , and Higher Twist Effects at High x
journal, June 2000


Positivity constraints for anomalous dimensions
journal, October 1973


QCD asymptotics and kinematic thresholds in deep inelastic scattering
journal, April 1979


Target mass corrections revisited
journal, May 2006


Target mass corrections
journal, March 2008

  • Schienbein, Ingo; Radescu, Voica A.; Zeller, G. P.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 35, Issue 5
  • DOI: 10.1088/0954-3899/35/5/053101

Unravelling higher twists
journal, February 1983


Collinear factorization for deep inelastic scattering structure functions at large Bjorken x B
journal, July 2008


Target mass corrections for spin-dependent structure functions in collinear factorization
journal, December 2008


Modeling Lepton-Nucleon Inelastic Scattering from High to Low Momentum Transfer
conference, January 2007

  • Alekhin, S.; Kulagin, S. A.; Petti, R.
  • NEUTRINO-NUCLEUS INTERACTIONS IN THE FEW-GEV REGION: NuInt07, AIP Conference Proceedings
  • DOI: 10.1063/1.2834481

A measurement of αs and of higher twists from a QCD analysis of high statistics F2 data on hydrogen and deuterium targets
journal, January 1992


Scheme dependence, leading order and higher twist studies of MRST partons
journal, December 1998


Higher twist contributions to the structure functions <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msubsup><mml:mi>F</mml:mi><mml:mn>2</mml:mn><mml:mi>p</mml:mi></mml:msubsup><mml:mo stretchy="false">(</mml:mo><mml:mi>x</mml:mi><mml:mo>,</mml:mo><mml:msup><mml:mi>Q</mml:mi><mml:mn>2</mml:mn></mml:msup><mml:mo stretchy="false">)</mml:mo></mml:math> and <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msubsup><mml:mi>F</mml:mi><mml:mn>2</mml:mn><mml:mi>d</mml:mi></mml:msubsup><mml:mo stretchy="false">(</mml:mo><mml:mi>x</mml:mi><mml:mo>,</mml:mo><mml:msup><mml:mi>Q</mml:mi><mml:mn>2</mml:mn></mml:msup><mml:mo stretchy="false">)</mml:mo></mml:math> at large x at higher orders
journal, May 2008


Impact of higher order and soft gluon corrections on the extraction of higher twist effects in DIS
journal, August 2001


The QCD renormalization scale stability of high twists and αs in deep inelastic scattering
journal, August 2000


Twist-4 contributions to the hadron structure functions
journal, July 1990


Isospin dependence of power corrections in deep inelastic scattering
journal, June 2004


Applications of quark-hadron duality in the F 2 structure function
journal, September 2009


Measurement of the proton and deuteron structure functions, F2p and F2d, and of the ratio
journal, January 1997


A high statistics measurement of the proton structure functions F2(x, Q2) and R from deep inelastic muon scattering at high Q2
journal, June 1989


Measurement of neutral and charged current cross sections in electron-proton collisions at high $Q^2$
journal, February 2001


Deep-inelastic inclusive ep scattering at low x and a determination of $\alpha_s$
journal, June 2001


Measurements of F 2 and xF 3 ν xF 3 ν ¯ from CCFR ν μ -Fe and ν ¯ μ -Fe Data in a Physics Model-Independent Way
journal, March 2001


Improved Determination of α s From Neutrino-Nucleon Scattering
journal, August 1997


Dimuon production in proton-copper collisions at s = 38.8 GeV
journal, May 1991


Measurement of the Lepton Charge Asymmetry in W -Boson Decays Produced in p p ¯ Collisions
journal, December 1998


Measurement of the forward-backward charge asymmetry from W e ν production in p p ¯ collisions at s = 1.96     TeV
journal, March 2005


Measurement of the muon charge asymmetry from W boson decays
journal, January 2008


Measurement of the Electron Charge Asymmetry in p p ¯ W + X e ν + X Events at s = 1.96 TeV
journal, November 2008


Direct Measurement of the W Production Charge Asymmetry in p p ¯ Collisions at s = 1.96 TeV
journal, May 2009


Measurement of the inclusive jet cross section in p p ¯ collisions at s = 1.8 TeV
journal, June 2001


Inclusive Jet Production in p p ¯ Collisions
journal, February 2001


Measurement of the differential cross section for the production of an isolated photon with associated jet in <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> collisions at <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>1.96</mml:mn><mml:mtext> </mml:mtext><mml:mtext>TeV</mml:mtext></mml:math>
journal, September 2008


Role of nuclear binding in the European-Muon-Collaboration effect
journal, March 1992


Neutron structure functions
journal, December 2008

  • Arrington, J.; Coester, F.; Holt, R. J.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 36, Issue 2
  • DOI: 10.1088/0954-3899/36/2/025005

Hadron masses in a gauge theory
journal, July 1975


νW2 at small ω′ and resonance form factors in a quark model with broken SU(6)
journal, March 1973


The spin and flavor dependence of parton distribution functions
journal, September 1988


Valence quark spin distribution functions
journal, January 1999


Pion and Nucleon Structure Functions near x = 1
journal, November 1975


Effect of Orbital Angular Momentum on Valence-Quark Helicity Distributions
journal, August 2007


Parity at High x
conference, January 2005

  • Souder, P. A.
  • STRUCTURE OF THE NUCLEON AT LARGE BJORKEN x: 2nd International Workshop on the Structure of the Nucleon at Large Bjorken x; HiX2004, AIP Conference Proceedings
  • DOI: 10.1063/1.1871662

Finite- Q 2 corrections to parity-violating DIS
journal, June 2008


Neutron structure function and A=3 mirror nuclei
journal, November 2000


Deep inelastic scattering from A = 3 nuclei and the neutron structure function
journal, September 2003


Parton distributions for the LHC
text, January 2007

  • Thorne, R. S.; Martin, A. D.; Stirling, W. J.
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/proc07-01/27

Measurement of the muon charge asymmetry from W boson decays
text, January 2007


Neutron Structure Functions
text, January 2008


Parton distributions for the LHC
text, January 2009


Tau neutrino deep inelastic charged current interactions
text, January 2002


Inclusive Jet Production, Parton Distributions, and the Search for New Physics
text, January 2003


Isospin Dependence of Power Corrections in Deep Inelastic Scattering
text, January 2003


Uncertainties of predictions from parton distributions. I: Theoretical errors
text, January 2003


Global Study of Nuclear Structure Functions
text, January 2004


Quark-hadron duality in electron scattering
text, January 2005


Scheme dependence, leading order and higher twist studies of MRST partons
text, January 1998


Target mass corrections revisited
text, January 2006


An accurate nucleon-nucleon potential with charge-independence breaking
text, January 1994


Works referencing / citing this record:

The Structure Functions of 3 He and 3 H Nuclei in the Constituent Quark Exchange Model
journal, September 2013


Parton momentum and helicity distributions in the nucleon
journal, August 2013

  • Jimenez-Delgado, P.; Melnitchouk, W.; Owens, J. F.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 40, Issue 9
  • DOI: 10.1088/0954-3899/40/9/093102

Refined analysis on the parton distribution functions of the proton
journal, November 2019

  • Wang, X. G.; Thomas, A. W.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 47, Issue 1
  • DOI: 10.1088/1361-6471/ab51b3

Physics opportunities with the 12 GeV upgrade at Jefferson Lab
journal, December 2012


QCD and strongly coupled gauge theories: challenges and perspectives
journal, October 2014


A critical appraisal and evaluation of modern PDFs
journal, August 2016


Recent Developments in Neutrino/Antineutrino-Nucleus Interactions
journal, January 2012

  • Morfín, Jorge G.; Nieves, Juan; Sobczyk, Jan T.
  • Advances in High Energy Physics, Vol. 2012
  • DOI: 10.1155/2012/934597

Physics Opportunities with the 12 GeV Upgrade at Jefferson Lab
text, January 2018


QCD and Strongly Coupled Gauge Theories: Challenges and Perspectives
text, January 2014


How well do we know the neutron structure function?
text, January 2011


Physics Opportunities with the 12 GeV Upgrade at Jefferson Lab
text, January 2012


Parton distributions in the presence of target mass corrections
text, January 2012


Parton momentum and helicity distributions in the nucleon
text, January 2013


Interplay of Threshold Resummation and Hadron Mass Corrections in Deep Inelastic Processes
text, January 2014


A Critical Appraisal and Evaluation of Modern PDFs
text, January 2016