Measurement of R = {sigma}{sub L}/{sigma}{sub T} and the Separated Longitudinal and Transverse Structure Functions in the Nucleon Resonance Region

/ Authors

The Jefferson Lab Hall C E94-110 Collaboration Y. Liang, V. Tvaskis, M. Christy, A. Ahmidouch, C. Armstrong, J. Arrington, R. Asaturyan, S. Avery, O. Baker, D. Beck

and 78 more authors

H. Blok, C. Bochna, W. Boeglin, P. Bosted, M. Bouwhuis, H. Breuer, D. Brown, A. Bruell, R. Carlini, J. Cha, N. Chant, A. Cochran, L. Cole, S. Danagoulian, D. Day, J. Dunne, D. Dutta, R. Ent, H. Fenker, B. Fox, L. Gan, H. Gao, K. Garrow, D. Gaskell, A. Gasparian, D. Geesaman, R. Gilman, P. Guèye, M. Harvey, R. Holt, X. Jiang, M. Jones, C. Keppel, E. Kinney, W. Lorenzon, A. Lung, D. Mack, P. Markowitz, J. Martin, K. McIlhany, D. McKee, D. Meekins, M. A. Miller, R. Milner, J. Mitchell, H. Mkrtchyan, B. Mueller, A. Nathan, G. Niculescu, I. Niculescu, T. O'Neill, V. Papavassiliou, S. Pate, R. Piercey, D. Potterveld, R. Ransome, J. Reinhold, E. Rollinde, O. Rondon, P. Roos, A. Sarty, R. Sawafta, E. Schulte, E. Segbefia, C. Smith, S. Stepanyan, S. Strauch, V. Tadevosyan, L. Tang, R. Tieulent, A. Uzzle, W. Vulcan, S. Wood, F. Xiong, L. Yuan, M. Zeier, B. Zihlmann, V. Ziskin

/ Abstract

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{sup 2} < 5.5 GeV{sup 2}. The data have been used to accurately perform over 170 Rosenbluth-type longitudinal/transverse separations. The precision R = {sigma}{sub L}/{sigma}{sub T} data are presented here, along with the first separate values of the inelastic structure functions F{sub 1} and F{sub L} in this regime. The resonance longitudinal component is found to be significant. With the new data, quark-hadron duality is observed above Q{sup 2} = 1 GeV{sup 2} in the separated structure functions independently.

Journal: arXiv: Nuclear Experiment

Measurement of R = {sigma}{sub L}/{sigma}{sub T} and the Separated Longitudinal and Transverse Structure Functions in the Nucleon Resonance Region

/ Authors

The Jefferson Lab Hall C E94-110 Collaboration Y. Liang, V. Tvaskis, M. Christy, A. Ahmidouch, C. Armstrong, J. Arrington, R. Asaturyan, S. Avery, O. Baker, D. Beck

and 78 more authors

/ Abstract

Journal: arXiv: Nuclear Experiment