New parton distributions from large-x and low-Q^2 data (2009)
Accardi, A., Christy, M. E., Keppel, C. E., Monaghan, P., Melnitchouk, W., Morfin, J. G., ...
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...
Confirmation of quark-hadron duality in the neutron F_2 structure function (2009)
Malace, S. P., Kahn, Y., Melnitchouk, W., Keppel, C. E.
Using a recently developed technique we extract the neutron F_2^n structure function from inclusive proton and deuteron data in the large-x region, and test the validity of quark-hadron duality in...
Neutral Pion Electroproduction in the Resonance Region at High $Q^2$ (2009)
Villano, A. N., Stoler, P., Bosted, P. E., Connell, S. H., Dalton, M. M., Jones, M. K., ...
The process $ep \to e^{\prime}p^{\prime}\pi^0$ has been measured at $Q^2$ = 6.4 and 7.7 GeV/c$^2$)$^2$ in Jefferson Lab's Hall C. Unpolarized differential cross sections are reported in the virtual...
New measurements of the EMC effect in very light nuclei (2009)
Seely, J., Daniel, A., Gaskell, D., Arrington, J., Fomin, N., Solvignon, P., ...
New Jefferson Lab data are presented on the nuclear dependence of the inclusive cross section from 2H, 3He, 4He, 9Be and 12C for 0.3
Nachtmann Moments of the Proton and Deuteron Spin Structure Functions (2008)
Slifer, K., Rondon, O. A., Aghalaryan, A., Ahmidouch, A., Asaturyan, R., Bloch, F., ...
We perform a Nachtmann moment analysis of our measured proton and deuteron spin structure functions g1 and g2 in the resonance region at intermediate four momentum transfer. This analysis is the...
Blok, H. P., Horn, T., Huber, G. M., Beise, E. J., Gaskell, D., Mack, D. J., ...
Cross sections for the reaction ${^1}$H($e,e'\pi^+$)$n$ were measured in Hall C at Thomas Jefferson National Accelerator Facility (JLab) using the CEBAF high-intensity, continous electron beam in...
Huber, G. M., Blok, H. P., Horn, T., Beise, E. J., Gaskell, D., Mack, D. J., ...
The charged pion form factor, Fpi(Q^2), is an important quantity which can be used to advance our knowledge of hadronic structure. However, the extraction of Fpi from data requires a model of the...
Search for Sub-threshold Photoproduction of J/Psi Mesons (2008)
Bosted, P., Dunne, J., Lee, C. A., Junnarkar, P., Arrington, J., Asaturyan, R., ...
A search was made for sub-threshold $J/\psi$ production from a carbon target using a mixed real and quasi-real Bremsstrahlung photon beam with an endpoint energy of 5.76 GeV. No events were observed,...
Electroproduction of Eta Mesons in the S11(1535) Resonance Region at High Momentum Transfer (2008)
Dalton, M. M., Adams, G. S., Ahmidouch, A., Angelescu, T., Arrington, J., Asaturyan, R., ...
The differential cross-section for the process p(e,e'p)eta has been measured at Q2 ~ 5.7 and 7.0 (GeV/c)2 for centre-of-mass energies from threshold to 1.8 GeV, encompassing the S11(1535) resonance,...
Transverse momentum dependence of semi-inclusive pion production (2007)
Mkrtchyan, H., Bosted, P. E., Adams, G. S., Ahmidouch, A., Angelescu, T., Arrington, J., ...
Cross sections for semi-inclusive electroproduction of charged pions ($\pi^{\pm}$) from both proton and deuteron targets were measured for $0.2
A Review of Target Mass Corrections (2007)
Schienbein, Ingo, Radescu, Voica A., Zeller, G. P., Christy, M. Eric, Keppel, C. E., McFarland, Kevin S., ...
With recent advances in the precision of inclusive lepton--nuclear scattering experiments, it has become apparent that comparable improvements are needed in the accuracy of the theoretical analysis...
Precision Rosenbluth measurement of the proton elastic form factors (2007)
Qattan, I. A., Arrington, J., Segel, R. E., Zheng, X., Aniol, K., Baker, O. K., ...
We report the results of a new Rosenbluth measurement of the proton form factors at Q^2 values of 2.64, 3.20 and 4.10 GeV^2. Cross sections were determined by detecting the recoiling proton in...
The impact of new neutrino DIS and Drell-Yan data on large-x parton distributions (2007)
Owens, J. F., Huston, J., Keppel, C. E., Kuhlmann, S., Morfin, J. G., Olness, F., ...
New data sets have recently become available for neutrino and antineutrino deep inelastic scattering on nuclear targets and for inclusive dimuon production in pp pd interactions. These data sets are...
Proton Spin Structure in the Resonance Region (2006)
Slifer, K., Tajima, S., Aghalaryan, A., Ahmidouch, A., Asaturyan, R., ...
We have examined the spin structure of the proton in the region of the nucleon resonances (1.085 GeV < W < 1.910 GeV) at an average four momentum transfer of Q^2 = 1.3 GeV^2. Using the Jefferson Lab...
Determination of the Charged Pion Form Factor at Q2=1.60 and 2.45 (GeV/c)2 (2006)
Aniol, K., Arrington, J., Barrett, B., Beise, E. J., Blok, H. P., ...
The H(e,e'pi+)n cross section was measured at four-momentum transfers of Q2=1.60 and 2.45 GeV2 at an invariant mass of the photon nucleon system of W=2.22 GeV. The charged pion form factor (F_pi) was...
Tvaskis, V., Arrington, J., Christy, M. E., Ent, R., Keppel, C. E., Liang, Y., ...
The effects of two-photon exchange corrections, suggested to explain the difference between measurements of the proton elastic electromagnetic form factors using the polarization transfer and...
Moments of nuclear and nucleon structure functions at low Q^2 and the momentum sum rule (2005)
Niculescu, I., Arrington, J., Ent, R., Keppel, C. E.
New nuclear structure function data from Jefferson Lab covering the higher x and lower Q^2 regime make it possible to extract the higher order F_2 moments for iron and deuterium at low four-momentum...
Nuclear transparency from quasielastic 12C(e,e'p) (2005)
Rohe, D., Benhar, O., Armstrong, C. S., Asaturyan, R., Baker, O. K., Bueltmann, S., ...
We studied the reaction 12C(e,e'p) in quasielastic kinematics at momentum transfers between 0.6 and 1.8 (GeV/c)^2 covering the single-particle region. From this the nuclear transparency factors are...
Q^2 Evolution of Generalized Baldin Sum Rule for the Proton (2004)
Liang, Y., Christy, M. E., Ent, R., Keppel, C. E.
The generalized Baldin sum rule for virtual photon scattering, the unpolarized analogy of the generalized Gerasimov-Drell-Hearn integral, provides an important way to investigate the transition...
Precision Rosenbluth measurement of the proton elastic form factors (2004)
Qattan, I. A., Arrington, J., Segel, R. E., Zheng, X., Aniol, K., Baker, O. K., ...
We report the results of a new Rosenbluth measurement of the proton form factors at Q^2 values of 2.64, 3.20 and 4.10 GeV^2. Cross sections were determined by detecting the recoiling proton in...
Correlated Strength in Nuclear Spectral Function (2004)
Rohe, D., Armstrong, C. S., Asaturyan, R., Baker, O. K., Bueltmann, S., Carasco, C., ...
We have carried out an (e,e'p) experiment at high momentum transfer and in parallel kinematics to measure the strength of the nuclear spectral function S(k,E) at high nucleon momenta k and large...
Low-Q scaling, duality, and the EMC effect (2003)
Arrington, J., Ent, R., Keppel, C. E., Mammei, J., Niculescu, I.
High energy lepton scattering has been the primary tool for mapping out the quark distributions of nucleons and nuclei. Data on the proton and deuteron have shown that there is a fundamental...
Strauch, S., Dieterich, S., Aniol, K.A., Annand, J.R.M., Baker, O.K., Bertozzi, W., ...
We have measured the proton recoil polarization in the He-4((e) over right arrow ,e(')(p) over right arrow)H-4 reaction at Q(2)=0.5, 1.0, 1.6, and 2.6 (GeV/c)(2). The measured ratio of polarization...
Perturbative QCD Analysis of Local Duality in a fixed W^2 Framework (2001)
Liuti, S., Ent, R., Keppel, C. E., Niculescu, I.
We study the global Q^2 dependence of large x, F_2 nucleon structure function data, with the aim of providing a perturbative-QCD based, quantitative analysis of parton-hadron duality. As opposed to...
Moments of the Proton F2 Structure Function at Low Q2 (2001)
Armstrong, C. S., Ent, R., Keppel, C. E., Liuti, S., Niculescu, G., Niculescu, I.
The Q^2 dependence of inclusive electron-proton scattering F_2 structure function data in both the nucleon resonance region and the deep inelastic region, at momentum transfers below 5 (GeV/c)^2, is...
x- and xi-scaling of the Nuclear Structure Function at Large x (2001)
Arrington, J., Armstrong, C. S., Averett, T., Baker, O. K., De Bever, L., Bochna, C. W., ...
Inclusive electron scattering data are presented for ^2H and Fe targets at an incident electron energy of 4.045 GeV for a range of momentum transfers from Q^2 = 1 to 7 (GeV/c)^2. Data were taken at...
Experimental Verification of Quark-Hadron Duality (2000)
Niculescu, I., Armstrong, C. S., Arrington, J., Assamagan, K. A., Baker, O. K., Beck, D. H., ...
A newly obtained sample of inclusive electron-nucleon scattering data has been analyzed for precision tests of quark-hadron duality. The data are in the nucleon resonance region, and span the range...
Exclusive Compton scattering on the proton (1999)
Chen, J P, Afanasiev, A V, Berthot, J, Bertin, P Y, Bertozzi, W, Bosted, P E, ...
Exclusive Electron Scattering from Deuterium at High Momentum Transfer (1995)
Bulten, H. J., Anthony, P. L., Arnold, R. G., Arrington, J., Beise, E. J., Belz, E., ...
Cross sections are presented for the reaction 2H(e,e′p)n for momentum transfers in the range 1.2≤Q^2≤6.8 (GeV/c)^2 and for missing momenta from 0 to 250 MeV/c. The longitudinal-transverse...
Inclusive Electron Scattering from Nuclei at $x \simeq 1$ (1995)
Arrington, J., Anthony, P., Arnold, R. G., Beise, E. J., Belz, J. E., Bosted, P. E., ...
The inclusive A(e,e') cross section for $x \simeq 1$ was measured on $^2$H, C, Fe, and Au for momentum transfers $Q^2$ from 1-7 (GeV/c)$^2$. The scaling behavior of the data was examined in the...
Strauch, S., Dieterich, S., Aniol, K.A., Annand, J.R.M., Baker, O.K., Bertozzi, W., ...
We have measured the proton recoil polarization in the He-4((e) over right arrow ,e(')(p) over right arrow)H-4 reaction at Q(2)=0.5, 1.0, 1.6, and 2.6 (GeV/c)(2). The measured ratio of polarization...
Strauch, S., Dieterich, S., Aniol, K.A., Annand, J.R.M., Baker, O.K., Bertozzi, W., ...
We have measured the proton recoil polarization in the He-4((e) over right arrow ,e(')(p) over right arrow)H-4 reaction at Q(2)=0.5, 1.0, 1.6, and 2.6 (GeV/c)(2). The measured ratio of polarization...