Applications of quark-hadron duality in the F2 structure function

Malace, S. P.; Adams, G. S.; Ahmidouch, A.; Angelescu, T.; Arrington, J.; Asaturyan, R.; Baker, O. K.; Benmouna, N.; Blok, H. P.; Boeglin, W. U.; Bosted, P. E.; Breuer, H.; Christy, M. E.; Cui, Y.; Dalton, M. M.; Danagoulian, S.; Day, D.; Dunne, J. A.; Dutta, D.; Ent, R.; Fenker, H. C.; Gan, L.; Gaskell, D.; Hafidi, K.; Hinton, W.; Holt, R. J.; Horn, T.; Huber, G. M.; Hungerford, E.; Jiang, X.; Jones, M.; Joo, K.; Kalantarians, N.; Kelly, J. J.; Keppel, C. E.; Kinney, E. R.; Kubarovsky, V.; Li, Y.; Liang, Y.; Markowitz, P.; McGrath, E.; McKee, P.; Meekins, D. G.; Mkrtchyan, H.; Navasardyan, T.; Niculescu, G.; Niculescu, I.; Reimer, P. E.; Reinhold, J.; Roche, J.; Schulte, E.; Segbefia, E.; Smith, C.; Smith, G. R.; Tadevosyan, V.; Tang, L.; Ungaro, M.; Uzzle, A.; Vidakovic, S.; Villano, A. N.; Vulcan, W. F.; Wesselmann, F. R.; Wojtsekhowski, B.; Wood, S. A.; Yuan, L.; Zheng, X.

doi:10.1103/PhysRevC.80.035207

Title: Applications of quark-hadron duality in the $F_{2}$ structure function

Journal Article · Tue Sep 01 00:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.80.035207· OSTI ID:966672

Malace, S. P.; Adams, G. S.; Ahmidouch, A.; Angelescu, T.; Arrington, J.; Asaturyan, R.; Baker, O. K.; Benmouna, N.; Blok, H. P.; Boeglin, W. U.; Bosted, P. E.; Breuer, H.; Christy, M. E.; Cui, Y.; Dalton, M. M.; Danagoulian, S.; Day, D.; Dunne, J. A.; Dutta, D.; Ent, R. more »

Inclusive electron-proton and electron-deuteron inelastic cross sections have been measured at Jefferson Lab (JLab) in the resonance region, at large Bjorken x, up to 0.92, and four-momentum transfer squared Q{sup 2} up to 7.5 GeV{sup 2} in the experiment E00-116. These measurements are used to extend to larger x and Q{sup 2} precision, quantitative, studies of the phenomenon of quark-hadron duality. Our analysis confirms, both globally and locally, the apparent 'violation' of quark-hadron duality previously observed at a Q{sup 2} of 3.5 GeV{sup 2} when resonance data are compared to structure function data created from CTEQ6M and MRST2004 parton distribution functions (PDFs). More importantly, our new data show that this discrepancy saturates by Q{sup 2}{approx}4 GeV{sup 2}, becoming Q{sup 2} independent. This suggests only small violations of Q{sup 2} evolution by contributions from the higher-twist terms in the resonance region that is confirmed by our comparisons to ALEKHIN and ALLM97. We conclude that the unconstrained strength of the CTEQ6M and MRST2004 PDFs at large x is the major source of the disagreement between data and these parametrizations in the kinematic regime we study and that, in view of quark-hadron duality, properly averaged resonance region data could be used in global quantum chromodynamics fits to reduce PDF uncertainties at large x.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC); National Science Foundation (NSF)

DOE Contract Number:: DE-AC02-06CH11357

OSTI ID:: 966672

Report Number(s):: ANL/PHY/JA-64156; PRVCAN; TRN: US200921%%702

Journal Information:: Physical Review. C, Nuclear Physics, Vol. 80, Issue 3; ISSN 0556-2813

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: ENGLISH

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