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Measurement of R = sigma_L / sigma_T and the Separated Longitudinal and Transverse Structure Functions in the Nucleon Resonance Region

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arxiv nucl-ex/0410027 v2 pith:NJZVQK2P submitted 2004-10-19 nucl-ex

The Jefferson Lab Hall C E94-110 Collaboration: Y. Liang , V. Tvaskis , M.E. Christy , A. Ahmidouch , C. S. Armstrong , J. Arrington , R. Asaturyan , S. Avery
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O. K. Baker D. H. Beck H. P. Blok C. W. Bochna W. Boeglin P. Bosted M. Bouwhuis H. Breuer D. S. Brown A. Bruell R. D. Carlini J. Cha N. S. Chant A. Cochran L. Cole S. Danagoulian D. B. Day J. Dunne D. Dutta R. Ent H. C. Fenker B. Fox L. Gan H. Gao K. Garrow D. Gaskell A. Gasparian D. F. Geesaman R. Gilman P. L. J. Gu`eye M. Harvey R. J. Holt X. Jiang M. Jones C. E. Keppel E. Kinney W. Lorenzon A. Lung D. J. Mack P. Markowitz J. W. Martin K. McIlhany D. McKee D. Meekins M. A. Miller R. G. Milner J. H. Mitchell H. Mkrtchyan B. A. Mueller A. Nathan G. Niculescu I. Niculescu T. G. O'Neill V. Papavassiliou S.F. Pate R. B. Piercey D. Potterveld R. D. Ransome J. Reinhold E. Rollinde O. Rondon P. Roos A. J. Sarty R. Sawafta E. C. Schulte E. Segbefia C. Smith S. Stepanyan S. Strauch V. Tadevosyan L. Tang R. Tieulent A. Uzzle W. F. Vulcan S. A. Wood F. Xiong L. Yuan M. Zeier B. Zihlmann V. Ziskin
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keywords longitudinalsigmafunctionsresonancestructuredataherenucleon
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We report on a detailed study of longitudinal strength in the nucleon resonance region, presenting new results from inclusive electron-proton cross sections measured at Jefferson Lab Hall C in the four-momentum transfer range 0.2 < Q^2 < 5.5 GeV^2. The data have been used to accurately perform 167 Rosenbluth-type longitudinal / transverse separations. The precision R = sigma_L / sigma_T data are presented here, along with the first separate values of the inelastic structure functions F_1 and F_L in this regime. The resonance longitudinal component is found to be significant, both in magnitude and in the existence of defined mass peaks. Additionally, quark-hadron duality is here observed above Q^2 = 1 GeV^2 in the separated structure functions independently.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Investigation of Medium Modifications to $^{12}$C Structure Functions in the Resonance Region

    nucl-ex 2025-01 conditional novelty 6.0 of 10

    In the nucleon resonance region, R=sigma_L/sigma_T is on average about 25% larger for carbon-bound nucleons than for deuterium, indicating distinct nuclear modifications for F1, F2, and FL.

  2. Analysis of NOvA and MicroBooNE charged-current inclusive neutrino measurements within the SuSAv2 framework

    hep-ph 2024-12 conditional novelty 4.0 of 10

    SuSAv2 model predictions are compared with NOvA and MicroBooNE inclusive charged-current neutrino cross sections, with good overall agreement for NOvA electron neutrinos and systematic underestimation for muon neutrin...

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