Skip to main content
Log in

Parton Distribution Functions from QCD Analysis of HERA Combined Inclusive e ± p Scattering Cross Section Data

  • Published:
Few-Body Systems Aims and scope Submit manuscript

Abstract

Utilizing very recent deep inelastic scattering measurements, a QCD analysis of proton structure function \({F_{2}^{p} (x,Q^2)}\) is presented. A wide range of the inclusive neutral-current deep-inelastic-scattering (NC DIS) data used in order to extract an updated set of parton distribution functions (PDFs). The HERA ‘combined’ data set on \({\sigma_{r,NC}^\pm (x,Q^2)}\) together with all available published data for heavy quarks \({F_2^{c,b}(x,Q^2)}\), longitudinal F L (x, Q 2) and also very recent reduced DIS cross section \({\sigma_{r,NC}^\pm (x,Q^2)}\) data from HERA experiments are the input in the present next-to-leading order (NLO) QCD analysis which determines a new set of parton distributions, called \({{\tt KKT11C}}\). The extracted PDFs in the ‘fixed flavour number scheme’ (FFNS) are in very good agreement with the available theoretical models.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Aaron, F.D., et al., H1 and ZEUS Collaboration: Combined measurement and QCD analysis of the inclusive e±p scattering cross sections at HERA. JHEP 1001, 109 (2010). arXiv:0911.0884 [hep-ex]

    Google Scholar 

  2. Martin A.D., Stirling W.J., Thorne R.S., Watt G.: Parton distributions for the LHC. Eur. Phys. J. C 63, 189 (2009) arXiv:0901.0002 [hep-ph]

    Article  ADS  Google Scholar 

  3. Gluck M., Jimenez-Delgado P., Reya E.: Dynamical parton distributions of the nucleon and very small-x physics. Eur. Phys. J. C 53, x355 (2008) arXiv:0709.0614 [hep-ph]

    Article  ADS  Google Scholar 

  4. Khanpour, H., Khorramian, A.N., Atashbar Tehrani, S.: Next-to-leading order parton distributions in fixed flavour factorization scheme from recent deep-inelastic-scattering data. Phys. Rev. D (2012, to appear)

  5. Khorramian A.N., Khanpour H., Tehrani S.A.: Nonsinglet parton distribution functions from the precise next-to-next-to-next-to leading order QCD fit. Phys. Rev. D 81, 014013 (2010) arXiv:0909.2665 [hep-ph]

    Article  ADS  Google Scholar 

  6. Khanpour H., Khorramian A.N., Atashbar Tehrani S., Mirjalili A.: Determination of valance quark distributions in higher order of perturbative QCD. Acta Phys. Polon. B 40, 2971 (2009)

    ADS  Google Scholar 

  7. Khorramian A.N., Tehrani S.A.: NNLO QCD contributions to the flavour non-singlet sector of F 2(x, Q 2). Phys. Rev. D 78, 074019 (2008) arXiv:0805.3063 [hep-ph]

    Article  ADS  Google Scholar 

  8. Atashbar Tehrani S., Khorramian A.N.: The Jacobi Polynomials QCD analysis for the polarized structure function. JHEP 0707, 048 (2007) arXiv:0705.2647 [hep-ph]

    Article  Google Scholar 

  9. Riemersma S., Smith J., van Neerven W.L.: Rates for inclusive deep inelastic electroproduction of charm quarks at HERA. Phys. Lett. B 347, 143 (1995) arXiv:hep-ph/9411431

    Article  ADS  Google Scholar 

  10. Laenen E., Riemersma S., Smith J., van Neerven W.L.: Complete O (alpha-s) corrections to heavy flavour structure functions in electroproduction. Nucl. Phys. B 392, 162 (1993)

    Article  ADS  Google Scholar 

  11. Vogt A.: Efficient evolution of unpolarized and polarized parton distributions with QCD-PEGASUS. Comput. Phys. Commun. 170, 65 (2005) arXiv:hep-ph/0408244

    Article  ADS  Google Scholar 

  12. Collaboration H.: Measurement of the inclusive e±p scattering cross section at high inelasticity y and of the structure function F L . Eur. Phys. J. C 71, 1579 (2011) arXiv:1012.4355 [hep-ex]

    Article  Google Scholar 

  13. Arneodo M. et al.: New Muon Collaboration: Measurement of the proton and deuteron structure functions, F2(p) and F2(d), and of the ratio sigma(L)/sigma(T). Nucl. Phys. B 483, 3 (1997) arXiv:hep-ph/9610231

    Article  ADS  Google Scholar 

  14. Benvenuti A.C. et al.: BCDMS Collaboration: A high statistics measurement of the proton structure functions F(2) (x, Q**2) and R from deep inelastic muon scattering at high Q**2. Phys. Lett. B 223, 485 (1989)

    Article  ADS  Google Scholar 

  15. Adams M.R. et al.: E665 Collaboration: Proton and deuteron structure functions in muon scattering at 470-GeV. Phys. Rev. D 54, 3006 (1996)

    Article  ADS  Google Scholar 

  16. Whitlow L.W., Riordan E.M., Dasu S., Rock S., Bodek A.: Precise measurements of the proton and deuteron structure functions from a global analysis of the SLAC deep inelastic electron scattering cross-sections. Phys. Lett. B 282, 475 (1992)

    Article  ADS  Google Scholar 

  17. Benvenuti A.C. et al.: BCDMS Collaboration: A high statistics measurement of the deuteron structure functions F2 (x, Q**2) and R from deep inelastic muon scattering at high Q**2. Phys. Lett. B 237, 592 (1990)

    Article  ADS  Google Scholar 

  18. Arneodo M. et al.: New Muon Collaboration: Accurate measurement of F2(d)/F2(p) and R(d)-R(p). Nucl. Phys. B 487, 3 (1997) arXiv:hep-ex/9611022

    Article  ADS  Google Scholar 

  19. Aaron F.D. et al.: H1 Collaboration: Measurement of the charm and beauty structure functions using the H1 vertex detector at HERA. Eur. Phys. J. C 65, 89 (2010) arXiv:0907.2643 [hep-ex]

    Article  ADS  Google Scholar 

  20. Chekanov S. et al.: ZEUS Collaboration: Measurement of charm and beauty production in deep inelastic ep scattering from decays into muons at HERA. Eur. Phys. J. C 65, 65 (2010) arXiv:0904.3487 [hep-ex]

    Article  ADS  Google Scholar 

  21. Aktas A. et al.: H1 Collaboration: Measurement of F2\(({c \bar{c}})\) and F2\(({b \bar{b}})\) at high Q 2 using the H1 vertex detector at HERA. Eur. Phys. J. C 40, 349 (2005) arXiv:hep-ex/0411046

    Article  Google Scholar 

  22. Aktas A. et al.: H1 Collaboration: Measurement of F2(c anti-c) and F2(b anti-b) at low Q**2 and x using the H1 vertex detector at HERA. Eur. Phys. J. C 45, 23 (2006) arXiv:hep-ex/0507081

    Article  MathSciNet  ADS  Google Scholar 

  23. Adloff C. et al.: H1 Collaboration: Measurement of D*+- meson production and F2(c) in deep inelastic scattering at HERA. Phys. Lett. B 528, 199 (2002) arXiv:hep-ex/0108039

    Article  ADS  Google Scholar 

  24. Adloff C. et al.: H1 Collaboration: Inclusive D0 and D*+- production in neutral current deep inelastic e p scattering at HERA. Z. Phys. C 72, 593 (1996) arXiv:hep-ex/9607012

    Article  ADS  Google Scholar 

  25. Chekanov S. et al.: ZEUS Collaboration: Measurement of D mesons production in deep inelastic scattering at HERA. JHEP 0707, 074 (2007) arXiv:0704.3562 [hep-ex]

    Google Scholar 

  26. Breitweg J. et al.: ZEUS Collaboration: Measurement of D*+- production and the charm contribution to F2 in deep inelastic scattering at HERA. Eur. Phys. J. C 12, 35 (2000) arXiv:hep-ex/9908012

    Article  ADS  Google Scholar 

  27. Chekanov S. et al.: ZEUS Collaboration: Measurement of D*+- production in deep inelastic e+- p scattering at HERA. Phys. Rev. D 69, 012004 (2004) arXiv:hep-ex/0308068

    Article  ADS  Google Scholar 

  28. Adloff C. et al.: H1 Collaboration: Deep-inelastic inclusive e p scattering at low x and a determination of alpha(s). Eur. Phys. J. C 21, 33 (2001) arXiv:hep-ex/0012053

    Article  ADS  Google Scholar 

  29. Chekanov S. et al.: ZEUS Collaboration: Measurement of the Longitudinal Proton Structure Function at HERA. Phys. Lett. B 682, 8 (2009) arXiv:0904.1092 [hep-ex]

    Article  Google Scholar 

  30. Aaron F.D. et al.: H1 Collaboration: Measurement of the Proton Structure Function F L at Low x. Phys. Lett. B 665, 139 (2008) arXiv:0805.2809 [hep-ex]

    Article  ADS  Google Scholar 

  31. Towell R.S. et al.: FNAL E866/NuSea Collaboration: Improved measurement of the anti-d/anti-u asymmetry in the nucleon sea. Phys. Rev. D 64, 052002 (2001) arXiv:hep-ex/0103030

    Article  ADS  Google Scholar 

  32. Webb, J.C., et al., NuSea Collaboration: Absolute Drell-Yan dimuon cross sections in 800-GeV/c p p and p d collisions. arXiv: hep-ex/0302019

  33. Onengut G. et al.: CHORUS Collaboration: Measurement of nucleon structure functions in neutrino scattering. Phys. Lett. B 632, 65 (2006)

    Article  ADS  Google Scholar 

  34. Tzanov M. et al.: NuTeV Collaboration: Precise measurement of neutrino and anti-neutrino differential cross sections. Phys. Rev. D 74, 012008 (2006) arXiv:hep-ex/0509010

    Article  ADS  Google Scholar 

  35. James, F.: CERN Program Library, Long Writeup D506 (MINUIT)

  36. Lai H.L., Guzzi M., Huston J., Li Z., Nadolsky P.M., Pumplin J., Yuan C.P.: New parton distributions for collider physics. Phys. Rev. D 82, 074024 (2010) arXiv:1007.2241 [hep-ph]

    Article  ADS  Google Scholar 

  37. Program summary http://particles.ipm.ir/links/QCD.htm

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to S. Atashbar Tehrani.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Khanpour, H., Khorramian, A.N. & Atashbar Tehrani, S. Parton Distribution Functions from QCD Analysis of HERA Combined Inclusive e ± p Scattering Cross Section Data. Few-Body Syst 52, 279–284 (2012). https://doi.org/10.1007/s00601-011-0293-y

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00601-011-0293-y

Keywords

Navigation