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47 results on '"Tang, L. -G."'

1. Exclusive $\pi^+$ electroproduction off the proton from low to high -t

Author

Basnet, S., Huber, G. M., Li, W. B., Blok, H. P., Gaskell, D., Horn, T., Aniol, K., Arrington, J., Beise, E. J., Boeglin, W., Brash, E. J., Breuer, H., Chang, C. C., Christy, M. E., Ent, R., Gibson, E., Holt, R. J., Jin, S., Jones, M. K., Keppel, C. E., Kim, W., King, P. M., Kovaltchouk, V., Liu, J., Lolos, G. J., Mack, D. J., Margaziotis, D. J., Markowitz, P., Matsumura, A., Meekins, D., Miyoshi, T., Mkrtchyan, H., Niculescu, I., Okayasu, Y., Pentchev, L., Perdrisat, C., Potterveld, D., Punjabi, V., Reimer, P., Reinhold, J., Roche, J., Sarty, A., Smith, G. R., Tadevosyan, V., Tang, L. G., Tvaskis, V., Volmer, J., Vulcan, W., Warren, G., Wood, S. A., Xu, C., and Zheng, X.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

Background: Measurements of exclusive meson production are a useful tool in the study of hadronic structure. In particular, one can discern the relevant degrees of freedom at different distance scales through these studies. Purpose: To study the transition between non-perturbative and perturbative Quantum Chromodyanmics as the square of four momentum transfer to the struck proton, -t, is increased. Method: Cross sections for the $^1$H(e,e'$\pi^+$)n reaction were measured over the -t range of 0.272 to 2.127 GeV$^2$ with limited azimuthal coverage at fixed beam energy of 4.709 GeV, Q$^2$ of 2.4 GeV$^2$ and W of 2.0 GeV at the Thomas Jefferson National Accelerator Facility (JLab) Hall C. Results: The -t dependence of the measured $\pi^+$ electroproduction cross section generally agrees with prior data from JLab Halls B and C. The data are consistent with a Regge amplitude based theoretical model, but show poor agreement with a Generalized Parton Distribution (GPD) based model. Conclusion: The agreement of cross sections with prior data implies small contribution from the interference terms, and the confirmation of the change in t-slopes between the low and high -t regions previously observed in photoproduction indicates the changing nature of the electroproduction reaction in our kinematic regime., Comment: 9 pages, 5 figures Physical Review C, in press

Published
2019
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2. Unique Access to u-Channel Physics: Exclusive Backward-Angle Omega Meson Electroproduction

Author

Li, W. B., Huber, G. M., Blok, H. P., Gaskell, D., Horn, T., Semenov-Tian-Shansky, K., Pire, B., Szymanowski, L., Laget, J. -M., Aniol, K., Arrington, J., Beise, E. J., Boeglin, W., Brash, E. J., Breuer, H., Chang, C. C., Christy, M. E., Ent, R., Gibson, E. F., Holt, R. J., Jin, S., Jones, M. K., Keppel, C. E., Kim, W., King, P. M., Kovaltchouk, V., Liu, J., Lolos, G. J., Mack, D. J., Margaziotis, D. J., Markowitz, P., Matsumura, A., Meekins, D., Miyoshi, T., Mkrtchyan, H., Niculescu, I., Okayasu, Y., Pentchev, L., Perdrisat, C., Potterveld, D., Punjabi, V., Reimer, P. E., Reinhold, J., Roche, J., Roos, P. G., Sarty, A., Smith, Tadevosyan, V., Tang, L. G., Tvaskis, V., Volmer, J., Vulcan, W., Warren, G., Wood, S. A., Xu, C., and Zheng, X.

Subjects
Nuclear Experiment, High Energy Physics - Experiment, High Energy Physics - Phenomenology, Nuclear Theory
Abstract

Backward-angle meson electroproduction above the resonance region, which was previously ignored, is anticipated to offer unique access to the three quark plus sea component of the nucleon wave function. In this letter, we present the first complete separation of the four electromagnetic structure functions above the resonance region in exclusive omega electroproduction off the proton, e + p -> e' + p + omega, at central Q^2 values of 1.60, 2.45 GeV^2 , at W = 2.21 GeV. The results of our pioneering -u ~ -u min study demonstrate the existence of a unanticipated backward-angle cross section peak and the feasibility of full L/T/LT/TT separations in this never explored kinematic territory. At Q^2 =2.45 GeV^2 , the observed dominance of sigma_T over sigma_L, is qualitatively consistent with the collinear QCD description in the near-backward regime, in which the scattering amplitude factorizes into a hard subprocess amplitude and baryon to meson transition distribution amplitudes (TDAs): universal non-perturbative objects only accessible through backward angle kinematics.

Published
2019

3. Separated Kaon Electroproduction Cross Section and the Kaon Form Factor from 6 GeV JLab Data

Author

Carmignotto, M., Ali, S., Aniol, K., Arrington, J., Barrett, B., Beise, E. J., Blok, H. P., Boeglin, W., Brash, E. J., Breuer, H., Chang, C. C., Christy, M. E., Dittmann, A., Ent, R., Fenker, H., Gaskell, D., Gibson, E., Holt, R. J., Horn, T., Huber, G. M., Jin, S., Jones, M. K., Keppel, C. E., Kim, W., King, P. M., Kovaltchouk, V., Liu, J., Lolos, G. J., Mack, D. J., Margaziotis, D. J., Markowitz, P., Matsumura, A., Meekins, D., Miyoshi, T., Mkrtchyan, H., Niculescu, G., Niculescu, I., Okayasu, Y., Pegg, I., Pentchev, L., Perdrisat, C., Potterveld, D., Punjabi, V., Reimer, P. E., Reinhold, J., Roche, J., Sarty, A., Smith, G. R., Tadevosyan, V., Tang, L. G., Trotta, R., Tvaskis, V., Vargas, A., Vidakovic, S., Volmer, J., Vulcan, W., Warren, G., Wood, S. A., Xu, C., and Zheng, X.

Subjects
Nuclear Experiment
Abstract

The $^{1}H$($e,e^\prime K^+$)$\Lambda$ reaction was studied as a function of the Mandelstam variable $-t$ using data from the E01-004 (FPI-2) and E93-018 experiments that were carried out in Hall C at the 6 GeV Jefferson Lab. The cross section was fully separated into longitudinal and transverse components, and two interference terms at four-momentum transfers $Q^2$ of 1.00, 1.36 and 2.07 GeV$^2$. The kaon form factor was extracted from the longitudinal cross section using the Regge model by Vanderhaeghen, Guidal, and Laget. The results establish the method, previously used successfully for pion analyses, for extracting the kaon form factor. Data from 12 GeV Jefferson Lab experiments are expected to have sufficient precision to distinguish between theoretical predictions, for example recent perturbative QCD calculations with modern parton distribution amplitudes. The leading-twist behavior for light mesons is predicted to set in for values of $Q^2$ between 5-10 GeV$^2$, which makes data in the few GeV regime particularly interesting. The $Q^2$ dependence at fixed $x$ and $-t$ of the longitudinal cross section we extracted seems consistent with the QCD factorization prediction within the experimental uncertainty.

Published
2018
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4. First measurement of unpolarized SIDIS cross section and cross section ratios from a $^3$He target

Author

Yan, X., Allada, K., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., Bertozzi, W., Bradshaw, P. C., Bosted, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., Chen, J. -P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J. C., Cusanno, F., Dalton, M. M., Deconinck, W., de Jager, C. W., De Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P. A. M., Dutta, C., Dutta, D., Fassi, L. El, Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D. W., Holmstrom, T., Huang, J., Huang, M., Ibrahim, H. F, Iodice, M., Jiang, X., Jin, G., Jones, M. K., Katich, J., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., LeRose, J. J., Li, X., Li, Y., Lindgren, R., Liu, T., Liyanage, N., Long, E., Lu, H. -J., Margaziotis, D. J., Markowitz, P., Marrone, S., McNulty, D., Meziani, Z. -E., Michaels, R., Moffit, B., Camacho, C. Munoz, Nanda, S., Narayan, A., Nelyubin, V., Norum, B., Oh, Y., Osipenko, M., Parno, D., Peng, J. -C., Phillips, S. K., Posik, M., Puckett, A. J. R., Qian, X., Qiang, Y., Rakhman, A., Ransome, R., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M. H., Sirca, S., Stepanyan, S., Subedi, R., Sulkosky, V., Tang, L. -G., Tobias, W. A., Urciuoli, G. M., Vilardi, I., Wang, K., Wojtsekhowski, B., Wang, Y., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhan, X., Zhang, Y., Zhang, Y. -W., Zhao, B., Zhao, Y. X., Zheng, X., Zhu, L., Zhu, X., and Zong, X.

Subjects
Nuclear Experiment
Abstract

The unpolarized semi-inclusive deep-inelastic scattering (SIDIS) differential cross sections in $^3$He($e,e^{\prime}\pi^{\pm}$)$X$ have been measured for the first time in Jefferson Lab experiment E06-010 performed with a $5.9\,$GeV $e^-$ beam on a $^3$He target. The experiment focuses on the valence quark region, covering a kinematic range $0.12 < x_{bj} < 0.45$, $1 < Q^2 < 4 \, \textrm{(GeV/c)}^2$, $0.45 < z_{h} < 0.65$, and $0.05 < P_t < 0.55 \, \textrm{GeV/c}$. The extracted SIDIS differential cross sections of $\pi^{\pm}$ production are compared with existing phenomenological models while the $^3$He nucleus approximated as two protons and one neutron in a plane wave picture, in multi-dimensional bins. Within the experimental uncertainties, the azimuthal modulations of the cross sections are found to be consistent with zero.

Published
2016
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5. Double Spin Asymmetries of Inclusive Hadron Electroproductions from a Transversely Polarized $^3\rm{He}$ Target

Author

The Jefferson Lab Hall A Collaboration, Zhao, Y. X., Allada, K., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., Bertozzi, W., Bradshaw, P. C., Bosted, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., Chen, J. -P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J. C., Cusanno, F., Dalton, M., Deconinck, W., de Jager, C. W., De Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P. A. M., Dutta, C., Dutta, D., Fassi, L. El, Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D. W., Holmstrom, T., Huang, J., Huang, M., Ibrahim, H. F, Iodice, M., Jiang, X., Jin, G., Jones, M. K., Katich, J., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., LeRose, J. J., Li, X., Li, Y., Lindgren, R., Liyanage, N., Long, E., Lu, H. -J., Margaziotis, D. J., Markowitz, P., Marrone, S., McNulty, D., Meziani, Z. -E., Michaels, R., Moffit, B., Camacho, C. Muñoz, Nanda, S., Narayan, A., Nelyubin, V., Norum, B., Oh, Y., Osipenko, M., Parno, D., Peng, J. -C., Phillips, S. K., Posik, M., Puckett, A. J. R., Qian, X., Qiang, Y., Rakhman, A., Ransome, R., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M. H., Širca, S., Stepanyan, S., Subedi, R., Sulkosky, V., Tang, L. -G., Tobias, W. A., Urciuoli, G. M., Vilardi, I., Wang, K., Wojtsekhowski, B., Wang, Y., Yan, X., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhan, X., Zhang, Y., Zhang, Y. -W., Zhao, B., Zheng, X., Zhu, L., Zhu, X., and Zong, X.

Subjects
Nuclear Experiment, High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We report the measurement of beam-target double-spin asymmetries ($A_\text{LT}$) in the inclusive production of identified hadrons, $\vec{e}~$+$~^3\text{He}^{\uparrow}\rightarrow h+X$, using a longitudinally polarized 5.9 GeV electron beam and a transversely polarized $^3\rm{He}$ target. Hadrons ($\pi^{\pm}$, $K^{\pm}$ and proton) were detected at 16$^{\circ}$ with an average momentum $<$$P_h$$>$=2.35 GeV/c and a transverse momentum ($p_{T}$) coverage from 0.60 to 0.68 GeV/c. Asymmetries from the $^3\text{He}$ target were observed to be non-zero for $\pi^{\pm}$ production when the target was polarized transversely in the horizontal plane. The $\pi^{+}$ and $\pi^{-}$ asymmetries have opposite signs, analogous to the behavior of $A_\text{LT}$ in semi-inclusive deep-inelastic scattering., Comment: Published in PRC (92.015207), nuclear experiment, high-energy experiment

Published
2015
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6. Separated Response Functions in Exclusive, Forward $\pi^{\pm}$ Electroproduction on Deuterium

Author

Huber, G. M., Blok, H. P., Butuceanu, C., Gaskell, D., Horn, T., Mack, D. J., Abbott, D., Aniol, K., Anklin, H., Armstrong, C., Arrington, J., Assamagan, K., Avery, S., Baker, O. K., Barrett, B., Beise, E. J., Bochna, C., Boeglin, W., Brash, E. J., Breuer, H., Chang, C. C., Chant, N., Christy, M. E., Dunne, J., Eden, T., Ent, R., Fenker, H., Gibson, E. F., Gilman, R., Gustafsson, K., Hinton, W., Holt, R. J., Jackson, H., Jin, S., Jones, M. K., Keppel, C. E., Kim, P. H., Kim, W., King, P. M., Klein, A., Koltenuk, D., Kovaltchouk, V., Liang, M., Liu, J., Lolos, G. J., Lung, A., Margaziotis, D. J., Markowitz, P., Matsumura, A., McKee, D., Meekins, D., Mitchell, J., Miyoshi, T., Mkrtchyan, H., Mueller, B., Niculescu, G., Niculescu, I., Okayasu, Y., Pentchev, L., Perdrisat, C., Pitz, D., Potterveld, D., Punjabi, V., Qin, L. M., Reimer, P. E., Reinhold, J., Roche, J., Roos, P. G., Sarty, A., Shin, I. K., Smith, G. R., Stepanyan, S., Tang, L. G., Tadevosyan, V., Tvaskis, V., van der Meer, R. L. J., Vansyoc, K., Van Westrum, D., Vidakovic, S., Volmer, J., Vulcan, W., Warren, G., Wood, S. A., Xu, C., Yan, C., Zhao, W. -X., Zheng, X., Zihlmann, B., and Collaboration, The Jefferson Lab Fpi

Subjects
Nuclear Experiment
Abstract

Background: Measurements of forward exclusive meson production at different squared four-momenta of the exchanged virtual photon, $Q^2$, and at different four-momentum transfer, t, can be used to probe QCD's transition from meson-nucleon degrees of freedom at long distances to quark-gluon degrees of freedom at short scales. Ratios of separated response functions in $\pi^-$ and $\pi^+$ electroproduction are particularly informative. The ratio for transverse photons may allow this transition to be more easily observed, while the ratio for longitudinal photons provides a crucial verification of the assumed pole dominance, needed for reliable extraction of the pion form factor from electroproduction data. Method: Data were acquired with 2.6-5.2 GeV electron beams and the HMS+SOS spectrometers in Jefferson Lab Hall C, at central $Q^2$ values of 0.6, 1.0, 1.6 GeV$^2$ at W=1.95 GeV, and $Q^2$=2.45 GeV$^2$ at W=2.22 GeV. There was significant coverage in $\phi$ and $\epsilon$, which allowed separation of $\sigma_{L,T,LT,TT}$. Results: $\sigma_L$ shows a clear signature of the pion pole, with a sharp rise at small -t. In contrast, $\sigma_T$ is much flatter versus t. The longitudinal/transverse ratios evolve with $Q^2$ and t, and at the highest $Q^2$=2.45 GeV$^2$ show a slight enhancement for $\pi^-$ production compared to $\pi^+$. The $\pi^-/\pi^+$ ratio for transverse photons exhibits only a small $Q^2$-dependence, following a nearly universal curve with t, with a steep transition to a value of about 0.25, consistent with s-channel quark knockout. The $\sigma_{TT}/\sigma_T$ ratio also drops rapidly with $Q^2$, qualitatively consistent with s-channel helicity conservation. The $\pi^-/\pi^+$ ratio for longitudinal photons indicates a small isoscalar contamination at W=1.95 GeV, consistent with what was observed in our earlier determination of the pion form factor at these kinematics., Comment: 25 pages, 16 figures, 6 tables

Published
2014
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7. Single Spin Asymmetries in Charged Kaon Production from Semi-Inclusive Deep Inelastic Scattering on a Transversely Polarized $^3{\rm{He}}$ Target

Author

Zhao, Y. X., Wang, Y., Allada, K., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., Bertozzi, W., Bradshaw, P. C., Bosted, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., Chen, J. -P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J. C., Cusanno, F., Dalton, M. M., Deconinck, W., de Jager, C. W., De Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P. A. M., Dutta, C., Dutta, D., Fassi, L. El, Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D. W., Holmstrom, T., Huang, J., Huang, M., Ibrahim, H. F, Iodice, M., Jiang, X., Jin, G., Jones, M. K., Katich, J., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., LeRose, J. J., Li, X., Li, Y., Lindgren, R., Liyanage, N., Long, E., Lu, H. -J., Margaziotis, D. J., Markowitz, P., Marrone, S., McNulty, D., Meziani, Z. -E., Michaels, R., Moffit, B., Camacho, C. Muñoz, Nanda, S., Narayan, A., Nelyubin, V., Norum, B., Oh, Y., Osipenko, M., Parno, D., Peng, J. -C., Phillips, S. K., Posik, M., Puckett, A. J. R., Qian, X., Qiang, Y., Rakhman, A., Ransome, R., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M. H., Širca, S., Stepanyan, S., Subedi, R., Sulkosky, V., Tang, L. -G., Tobias, A., Urciuoli, G. M., Vilardi, I., Wang, K., Wojtsekhowski, B., Yan, X., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhan, X., Zhang, Y., Zhang, Y. -W., Zhao, B., Zheng, X., Zhu, L., Zhu, X., and Zong, X.

Subjects
Nuclear Experiment
Abstract

We report the first measurement of target single spin asymmetries of charged kaons produced in semi-inclusive deep inelastic scattering of electrons off a transversely polarized $^3{\rm{He}}$ target. Both the Collins and Sivers moments, which are related to the nucleon transversity and Sivers distributions, respectively, are extracted over the kinematic range of 0.1$<$$x_{bj}$$<$0.4 for $K^{+}$ and $K^{-}$ production. While the Collins and Sivers moments for $K^{+}$ are consistent with zero within the experimental uncertainties, both moments for $K^{-}$ favor negative values. The Sivers moments are compared to the theoretical prediction from a phenomenological fit to the world data. While the $K^{+}$ Sivers moments are consistent with the prediction, the $K^{-}$ results differ from the prediction at the 2-sigma level., Comment: 6 pages, 3 figures

Published
2014
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8. Separated Response Function Ratios in Exclusive, Forward pi^{+/-} Electroproduction

Author

Huber, G. M., Blok, H. P., Butuceanu, C., Gaskell, D., Horn, T., Mack, D. J., Abbott, D., Aniol, K., Anklin, H., Armstrong, C., Arrington, J., Assamagan, K., Avery, S., Baker, O. K., Barrett, B., Beise, E. J., Bochna, C., Boeglin, W., Brash, E. J., Breuer, H., Chang, C. C., Chant, N., Christy, M. E., Dunne, J., Eden, T., Ent, R., Fenker, H., Gibson, E. F., Gilman, R., Gustafsson, K., Hinton, W., Holt, R. J., Jackson, H., Jin, S., Jones, M. K., Keppel, C. E., Kim, P. H., Kim, W., King, P. M., Klein, A., Koltenuk, D., Kovaltchouk, V., Liang, M., Liu, J., Lolos, G. J., Lung, A., Margaziotis, D. J., Markowitz, P., Matsumura, A., McKee, D., Meekins, D., Mitchell, J., Miyoshi, T., Mkrtchyan, H., Mueller, B., Niculescu, G., Niculescu, I., Okayasu, Y., Pentchev, L., Perdrisat, C., Pitz, D., Potterveld, D., Punjabi, V., Qin, L. M., Reimer, P. E., Reinhold, J., Roche, J., Roos, P. G., Sarty, A., Shin, I. K., Smith, G. R., Stepanyan, S., Tang, L. G., Tadevosyan, V., Tvaskis, V., van der Meer, R. L. J., Vansyoc, K., Van Westrum, D., Vidakovic, S., Volmer, J., Vulcan, W., Warren, G., Wood, S. A., Xu, C., Yan, C., Zhao, W. -X., Zheng, X., and Zihlmann, B.

Subjects
Nuclear Experiment
Abstract

The study of exclusive $\pi^{\pm}$ electroproduction on the nucleon, including separation of the various structure functions, is of interest for a number of reasons. The ratio $R_L=\sigma_L^{\pi^-}/\sigma_L^{\pi^+}$ is sensitive to isoscalar contamination to the dominant isovector pion exchange amplitude, which is the basis for the determination of the charged pion form factor from electroproduction data. A change in the value of $R_T=\sigma_T^{\pi^-}/\sigma_T^{\pi^+}$ from unity at small $-t$, to 1/4 at large $-t$, would suggest a transition from coupling to a (virtual) pion to coupling to individual quarks. Furthermore, the mentioned ratios may show an earlier approach to pQCD than the individual cross sections. We have performed the first complete separation of the four unpolarized electromagnetic structure functions above the dominant resonances in forward, exclusive $\pi^{\pm}$ electroproduction on the deuteron at central $Q^2$ values of 0.6, 1.0, 1.6 GeV$^2$ at $W$=1.95 GeV, and $Q^2=2.45$ GeV$^2$ at $W$=2.22 GeV. Here, we present the $L$ and $T$ cross sections, with emphasis on $R_L$ and $R_T$, and compare them with theoretical calculations. Results for the separated ratio $R_L$ indicate dominance of the pion-pole diagram at low $-t$, while results for $R_T$ are consistent with a transition between pion knockout and quark knockout mechanisms., Comment: 6 pages, 3 figures

Published
2014
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9. Measurement of pretzelosity asymmetry of charged pion production in Semi-Inclusive Deep Inelastic Scattering on a polarized $^3$He target

Author

Zhang, Y., Qian, X., Allada, K., Dutta, C., Huang, J., Katich, J., Wang, Y., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., Bertozzi, W., Bradshaw, P. C., Bosted, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., Chen, J. -P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J. C., Cusanno, F., Dalton, M. M., Deconinck, W., de Jager, C. W., De Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P. A. M., Dutta, D., Fassi, L. El, Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D. W., Holmstrom, T., Huang, M., Ibrahim, H. F., Iodice, M., Jiang, X., Jin, G., Jones, M. K., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., LeRose, J. J., Li, X., Li, Y., Lindgren, R., Liyanage, N., Long, E., Lu, H. -J., Margaziotis, D. J., Markowitz, P., Marrone, S., McNulty, D., Meziani, Z. -E., Michaels, R., Moffit, B., Camacho, C. Muñoz, Nanda, S., Narayan, A., Nelyubin, V., Norum, B., Oh, Y., Osipenko, M., Parno, D., Peng, J. C., Phillips, S. K., Posik, M., Puckett, A. J. R., Qiang, Y., Rakhman, A., Ransome, R. D., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M. H., Sirca, S., Stepanyan, S., Subedi, R., Sulkosky, V., Tang, L. -G., Tobias, W. A., Urciuoli, G. M., Vilardi, I., Wang, K., Wojtsekhowski, B., Yan, X., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhan, X., Zhang, Y. -W., Zhao, B., Zheng, X., Zhu, L., Zhu, X., and Zong, X.

Subjects
Nuclear Experiment
Abstract

An experiment to measure single-spin asymmetries in semi-inclusive production of charged pions in deep-inelastic scattering on a transversely polarized $^3$He target was performed at Jefferson Lab in the kinematic region of $0.16

Published
2013
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10. Single Spin Asymmetries of Inclusive Hadrons Produced in Electron Scattering from a Transversely Polarized $^3$He Target

Author

Allada, K., Zhao, Y. X., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., Bertozzi, W., Bradshaw, P. C., Bosted, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., Chen, J. -P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J. C., Cusanno, F., Dalton, M., Deconinck, W., de Jager, C. W., De Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P. A. M., Dutta, C., Dutta, D., Fassi, L. El, Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D. W., Holmstrom, T., Huang, J., Huang, M., Ibrahim, H. F, Iodice, M., Jiang, X., Jin, G., Jones, M. K., Katich, J., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., LeRose, J. J., Li, X., Li, Y., Lindgren, R., Liyanage, N., Long, E., Lu, H. -J., Margaziotis, D. J., Markowitz, P., Marrone, S., McNulty, D., Meziani, Z. -E., Michaels, R., Moffit, B., Camacho, C. Munoz, Nanda, S., Narayan, A., Nelyubin, V., Norum, B., Oh, Y., Osipenko, M., Parno, D., Peng, J. -C., Phillips, S. K., Posik, M., Puckett, A. J. R., Qian, X., Qiang, Y., Rakhman, A., Ransome, R., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M. H., Sirca, S., Stepanyan, S., Subedi, R., Sulkosky, V., Tang, L. -G., Tobias, A., Urciuoli, G. M., Vilardi, I., Wang, K., Wang, Y., Wojtsekhowski, B., Yan, X., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhan, X., Zhang, Y., Zhang, Y. -W., Zhao, B., Zheng, X., Zhu, L., Zhu, X., and Zong, X.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

We report the first measurement of target single-spin asymmetries (A$_N$) in the inclusive hadron production reaction, $e~$+$~^3\text{He}^{\uparrow}\rightarrow h+X$, using a transversely polarized $^3$He target. The experiment was conducted at Jefferson Lab in Hall A using a 5.9-GeV electron beam. Three types of hadrons ($\pi^{\pm}$, $\text{K}^{\pm}$ and proton) were detected in the transverse hadron momentum range 0.54 $

Published
2013
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11. Measurement of the Target-Normal Single-Spin Asymmetry in Deep-Inelastic Scattering from the Reaction $^{3}\mathrm{He}^{\uparrow}(e,e')X$

Author

Katich, J., Qian, X., Zhao, Y. X., Allada, K., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., Bertozzi, W., Bradshaw, P. C., Bosted, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., Chen, J. -P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J. C., Cusanno, F., Dalton, M. M., Deconinck, W., de Jager, C. W., De Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P. A. M., Dutta, C., Dutta, D., Fassi, L. El, Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D. W., Holmstrom, T., Huang, J., Huang, M., Ibrahim, H. F., Iodice, M., Jiang, X., Jin, G., Jones, M. K., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., LeRose, J. J., Li, X., Li, Y., Lindgren, R., Liyanage, N., Long, E., Lu, H. -J., Margaziotis, D. J., Markowitz, P., Marrone, S., McNulty, D., Meziani, Z. -E., Michaels, R., Moffit, B., Camacho, C. Muńoz, Nanda, S., Narayan, A., Nelyubin, V., Norum, B., Oh, Y., Osipenko, M., Parno, D., Peng, J. C., Phillips, S. K., Posik, M., Puckett, A. J. R., Qiang, Y., Rakhman, A., Ransome, R. D., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M. H., Širca, S., Stepanyan, S., Subedi, R., Sulkosky, V., Tang, L. -G., Tobias, A., Urciuoli, G. M., Vilardi, I., Wang, K., Wang, Y., Wojtsekhowski, B., Yan, X., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhan, X., Zhang, Y., Zhang, Y. -W., Zhao, B., Zheng, X., Zhu, L., Zhu, X., and Zong, X.

Subjects
Nuclear Experiment
Abstract

We report the first measurement of the target-normal single-spin asymmetry in deep-inelastic scattering from the inclusive reaction $^3$He$^{\uparrow}\left(e,e' \right)X$ on a polarized $^3$He gas target. Assuming time-reversal invariance, this asymmetry is strictly zero in the Born approximation but can be non-zero if two-photon-exchange contributions are included. The experiment, conducted at Jefferson Lab using a 5.89 GeV electron beam, covers a range of $1.7 < W < 2.9$ GeV, $1.02$ GeV, which is non-zero at the $2.89\sigma$ level. Our measured asymmetry agrees both in sign and magnitude with a two-photon-exchange model prediction that uses input from the Sivers transverse momentum distribution obtained from semi-inclusive deep-inelastic scattering., Comment: This is the final edited version as published in PRL

Published
2013
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12. Beam-Target Double Spin Asymmetry A_LT in Charged Pion Production from Deep Inelastic Scattering on a Transversely Polarized He-3 Target at 1.4<Q^2<2.7 GeV^2

Author

Huang, J., Allada, K., Dutta, C., Katich, J., Qian, X., Wang, Y., Zhang, Y., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., Bertozzi, W., Bradshaw, P. C., Bosted, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., Chen, J. -P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J. C., Cusanno, F., Dalton, M. M., Deconinck, W., de Jager, C. W., De Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P. A. M., Dutta, D., Fassi, L. El, Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D. W., Holmstrom, T., Huang, M., Ibrahim, H. F., Iodice, M., Jiang, X., Jin, G., Jones, M. K., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., LeRose, J. J., Li, X., Li, Y., Lindgren, R., Liyanage, N., Long, E., Lu, H. -J., Margaziotis, D. J., Markowitz, P., Marrone, S., McNulty, D., Meziani, Z. -E., Michaels, R., Moffit, B., Camacho, C. Muñoz, Nanda, S., Narayan, A., Nelyubin, V., Norum, B., Oh, Y., Osipenko, M., Parno, D., Peng, J. C., Phillips, S. K., Posik, M., Puckett, A. J. R., Qiang, Y., Rakhman, A., Ransome, R. D., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M. H., Širca, S., Stepanyan, S., Subedi, R., Sulkosky, V., Tang, L. -G., Tobias, A., Urciuoli, G. M., Vilardi, I., Wang, K., Wojtsekhowski, B., Yan, X., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhan, X., Zhang, Y. -W., Zhao, B., Zheng, X., Zhu, L., Zhu, X., and Zong, X.

Subjects
Nuclear Experiment, High Energy Physics - Experiment
Abstract

We report the first measurement of the double-spin asymmetry $A_{LT}$ for charged pion electroproduction in semi\nobreakdash-inclusive deep\nobreakdash-inelastic electron scattering on a transversely polarized $^{3}$He target. The kinematics focused on the valence quark region, $0.16

Published
2011
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13. Single Spin Asymmetries in Charged Pion Production from Semi-Inclusive Deep Inelastic Scattering on a Transversely Polarized $^3$He Target

Author

Qian, X., Allada, K., Dutta, C., Huang, J., Katich, J., Wang, Y., Zhang, Y., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., Bertozzi, W., Bradshaw, P. C., Bosted, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., Chen, J. -P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J. C., Cusanno, F., Dalton, M. M., Deconinck, W., de Jager, C. W., De Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P. A. M., Dutta, D., Fassi, L. El, Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D. W., Holmstrom, T., Huang, M., Ibrahim, H. F., Iodice, M., Jiang, X., Jin, G., Jones, M. K., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., LeRose, J. J., Li, X., Li, Y., Lindgren, R., Liyanage, N., Long, E., Lu, H. -J., Margaziotis, D. J., Markowitz, P., Marrone, S., McNulty, D., Meziani, Z. -E., Michaels, R., Moffit, B., Camacho, C. Munoz, Nanda, S., Narayan, A., Nelyubin, V., Norum, B., Oh, Y., Osipenko, M., Parno, D., Peng, J. C., Phillips, S. K., Posik, M., Puckett, A. J. R., Qiang, Y., Rakhman, A., Ransome, R. D., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M. H., Širca, S., Stepanyan, S., Subedi, R., Sulkosky, V., Tang, L. -G., Tobias, A., Urciuoli, G. M., Vilardi, I., Wang, K., Wojtsekhowski, B., Yan, X., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhan, X., Zhang, Y. -W., Zhao, B., Zheng, X., Zhu, L., Zhu, X., and Zong, X.

Subjects
Nuclear Experiment, High Energy Physics - Experiment, High Energy Physics - Phenomenology, Nuclear Theory
Abstract

We report the first measurement of target single spin asymmetries in the semi-inclusive $^3{He}(e,e'\pi^\pm)X$ reaction on a transversely polarized target. The experiment, conducted at Jefferson Lab using a 5.9 GeV electron beam, covers a range of 0.14 $< x <$ 0.34 with 1.3 $

Published
2011
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14. Charged pion form factor between $Q^2$=0.60 and 2.45 GeV$^2$. I. Measurements of the cross section for the ${^1}$H($e,e'\pi^+$)$n$ reaction

Author

Blok, H. P., Horn, T., Huber, G. M., Beise, E. J., Gaskell, D., Mack, D. J., Tadevosyan, V., Volmer, J., Abbott, D., Aniol, K., Anklin, H., Armstrong, C., Arrington, J., Assamagan, K., Avery, S., Baker, O. K., Barrett, B., Bochna, C., Boeglin, W., Brash, E. J., Breuer, H., Chang, C. C., Chant, N., Christy, M. E., Dunne, J., Eden, T., Ent, R., Fenker, H., Gibson, E., Gilman, R., Gustafsson, K., Hinton, W., Holt, R. J., Jackson, H., Jin, S., Jones, M. K., Keppel, C. E., Kim, P. H., Kim, W., King, P. M., Klein, A., Koltenuk, D., Kovaltchouk, V., Liang, M., Liu, J., Lolos, G. J., Lung, A., Margaziotis, D. J., Markowitz, P., Matsumura, A., McKee, D., Meekins, D., Mitchell, J., Miyoshi, T., Mkrtchyan, H., Mueller, B., Niculescu, G., Niculescu, I., Okayasu, Y., Pentchev, L., Perdrisat, C., Pitz, D., Potterveld, D., Punjabi, V., Qin, L. M., Reimer, P., Reinhold, J., Roche, J., Roos, P. G., Sarty, A., Shin, I. K., Smith, G. R., Stepanyan, S., Tang, L. G., Tvaskis, V., van der Meer, R. L. J., Vansyoc, K., Van Westrum, D., Vidakovic, S., Vulcan, W., Warren, G., Wood, S. A., Xu, C., Yan, C., Zhao, W. -X., Zheng, X., and Zihlmann, B.

Subjects
Nuclear Experiment
Abstract

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 order to determine the charged pion form factor. Data were taken for central four-momentum transfers ranging from $Q^2$=0.60 to 2.45 GeV$^2$ at an invariant mass of the virtual photon-nucleon system of $W$=1.95 and 2.22 GeV. The measured cross sections were separated into the four structure functions $\sigma_L$, $\sigma_T$, $\sigma_{LT}$, and $\sigma_{TT}$. The various parts of the experimental setup and the analysis steps are described in detail, including the calibrations and systematic studies, which were needed to obtain high precision results. The different types of systematic uncertainties are also discussed. The results for the separated cross sections as a function of the Mandelstam variable $t$ at the different values of $Q^2$ are presented. Some global features of the data are discussed, and the data are compared with the results of some model calculations for the reaction ${^1}$H($e,e'\pi^+$)$n$., Comment: 26 pages, 23 figures

Published
2008
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15. Charged pion form factor between Q^2=0.60 and 2.45 GeV^2. II. Determination of, and results for, the pion form factor

Author

Huber, G. M., Blok, H. P., Horn, T., Beise, E. J., Gaskell, D., Mack, D. J., Tadevosyan, V., Volmer, J., Abbott, D., Aniol, K., Anklin, H., Armstrong, C., Arrington, J., Assamagan, K., Avery, S., Baker, O. K., Barrett, B., Bochna, C., Boeglin, W., Brash, E. J., Breuer, H., Chang, C. C., Chant, N., Christy, M. E., Dunne, J., Eden, T., Ent, R., Gibson, E., Gilman, R., Gustafsson, K., Hinton, W., Holt, R. J., Jackson, H., Jin, S., Jones, M. K., Keppel, C. E., Kim, P. H., Kim, W., King, P. M., Klein, A., Koltenuk, D., Kovaltchouk, V., Kiang, M., Liu, J., Lolos, G. J., Lung, A., Margaziotis, D. J., Markowitz, P., Matsumura, A., McKee, D., Meekins, D., Mitchell, J., Miyoshi, T., Mkrtchyan, H., Mueller, B., Niculescu, G., Niculescu, I., Okayasu, Y., Pentchev, L., Perdrisat, C., Pitz, D., Potterveld, D., Punjabi, V., Qin, L. M., Reimer, P., Reinhold, J., Roche, J., Roos, P. G., Sarty, A., Shin, I. K., Smith, G. R., Stepanyan, S., Tang, L. G., Tvaskis, V., van der Meer, R. L. J., Vansyoc, K., Van Westrum, D., Vidakovic, S., Vulcan, W., Warren, G., Wood, S. A., Xu, C., Yan, C., Zhao, W. -X., Zheng, X., and Zihlmann, B.

Subjects
Nuclear Experiment
Abstract

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 1H(e,e'pi+)n reaction, and thus is inherently model dependent. Therefore, a detailed description of the extraction of the charged pion form factor from electroproduction data obtained recently at Jefferson Lab is presented, with particular focus given to the dominant uncertainties in this procedure. Results for Fpi are presented for Q^2=0.60-2.45 GeV^2. Above Q^2=1.5 GeV^2, the Fpi values are systematically below the monopole parameterization that describes the low Q^2 data used to determine the pion charge radius. The pion form factor can be calculated in a wide variety of theoretical approaches, and the experimental results are compared to a number of calculations. This comparison is helpful in understanding the role of soft versus hard contributions to hadronic structure in the intermediate Q^2 regime., Comment: 18 pages, 11 figures

Published
2008
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16. Determination of the pion charge form factor for Q^2=0.60-1.60 GeV^2

Author

collaboration, The Fpi-1, Tadevosyan, V., Blok, H. P., Huber, G. M., Abbott, D., Anklin, H., Armstrong, C., Arrington, J., Assamagan, K., Avery, S., Baker, O. K., Bochna, C., Brash, E. J., Breuer, H., Chant, N., Dunne, J., Eden, T., Ent, R., Gaskell, D., Gilman, R., Gustafsson, K., Hinton, W., Jackson, H., Jones, M. K., Keppel, C., Kim, P. H., Kim, W., Klein, A., Koltenuk, D., Liang, M., Lolos, G. J., Lung, A., Mack, D. J., McKee, D., Meekins, D., Mitchell, J., Mkrtchyan, H., Mueller, B., Niculescu, G. Niculescu I., Pitz, D., Potterveld, D., Qin, L. M., Reinhold, J., Shin, I. K., Stepanyan, S., Tang, L. G., van der Meer, R. L. J., Vansyoc, K., Van Westrum, D., Volmer, J., Vulcan, W., Wood, S., Yan, C., Zhao, W. -X., and Zihlmann, B.

Subjects
Nuclear Experiment
Abstract

The data analysis for the reaction H(e,e' pi^+)n, which was used to determine values for the charged pion form factor Fpi for values of Q^2=0.6-1.6 GeV^2, has been repeated with careful inspection of all steps and special attention to systematic uncertainties. Also the method used to extract Fpi from the measured longitudinal cross section was critically reconsidered. Final values for the separated longitudinal and transverse cross sections and the extracted values of Fpi are presented., Comment: 11 pages, 6 figures

Published
2006
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17. Determination of the Charged Pion Form Factor at Q2=1.60 and 2.45 (GeV/c)2

Author

Fpi2 collaboration, Horn, T., Aniol, K., Arrington, J., Barrett, B., Beise, E. J., Blok, H. P., Boeglin, W., Brash, E. J., Breuer, H., Chang, C. C., Christy, M. E., Ent, R., Gaskell, D., Gibson, E., Holt, R. J., Huber, G. M., Jin, S., Jones, M. K., Keppel, C. E., Kim, W., King, P. M., Kovaltchouk, V., Liu, J., Lolos, G. J., Mack, D. J., Margaziotis, D. J., Markowitz, P., Matsumura, A., Meekins, D., Miyoshi, T., Mkrtchyan, H., Niculescu, I., Okayasu, Y., Pentchev, L., Perdrisat, C., Potterveld, D., Punjabi, V., Reimer, P., Reinhold, J., Roche, J., Roos, P. G., Sarty, A., Smith, G. R., Tadevosyan, V., Tang, L. G., Tvaskis, V., Vidakovic, S., Volmer, J., Vulcan, W., Warren, G., Wood, S. A., Xu, C., and Zheng, X.

Subjects
Nuclear Experiment
Abstract

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 extracted from the data by comparing the separated longitudinal pion electroproduction cross section to a Regge model prediction in which F_pi is a free parameter. The results indicate that the pion form factor deviates from the charge-radius constrained monopole form at these values of Q2 by one sigma, but is still far from its perturbative Quantum Chromo-Dynamics prediction., Comment: 4 pages, 3 figures, submitted to Physical Review Letters

Published
2006
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19. Exclusive $\pi^+$ electroproduction off the proton from low to high-$t$

Author

Basnet, S., Huber, G. M., Li, W. B., Blok, H. P., Gaskell, D., Horn, T., Aniol, K., Arrington, J., Beise, E. J., Boeglin, W., Brash, E. J., Breuer, H., Chang, C. C., Christy, M. E., Ent, R., Gibson, E., Holt, R. J., Jin, S., Jones, M. K., Keppel, C. E., Kim, W., King, P. M., Kovaltchouk, V., Liu, J., Lolos, G. J., Mack, D. J., Margaziotis, D. J., Markowitz, P., Matsumura, A., Meekins, D., Miyoshi, T., Mkrtchyan, H., Niculescu, I., Okayasu, Y., Pentchev, L., Perdrisat, C., Potterveld, D., Punjabi, V., Reimer, P., Reinhold, J., Roche, J., Sarty, A., Smith, G. R., Tadevosyan, V., Tang, L. G., Tvaskis, V., Volmer, Julia, Vulcan, W., Warren, G., Wood, S. A., Xu, C., and Zheng, X.

Subjects
generalized parton distribution, accelerator, background, momentum transfer, interference, parton: distribution function, electroproduction, Regge, nonperturbative, beam: energy, kinematics, meson: production, structure, Jefferson Lab, photoproduction
Abstract

Physical review / C covering nuclear physics C100(6), 065204 (2019). doi:10.1103/PhysRevC.100.065204, Background: Measurements of exclusive meson production are a useful tool in the study of hadronic structure. In particular, one can discern the relevant degrees of freedom at different distance scales through these studies. Purpose: To study the transition between nonperturbative and perturbative quantum chromodynamics as the square of four-momentum transfer to the struck proton, −t, is increased. Method: Cross sections for the H1(e,e′π+)n reaction were measured over the −t range of 0.272 to 2.127 GeV2 with limited azimuthal coverage at fixed beam energy of 4.709 GeV, Q2 of 2.4 GeV2, and W of 2.0 GeV at the Thomas Jefferson National Accelerator Facility (JLab) Hall C. Results: The −t dependence of the measured π+ electroproduction cross section generally agrees with prior data from JLab Halls B and C. The data are consistent with a Regge amplitude-based theoretical model but show poor agreement with a generalized parton distribution–based model. Conclusion: The agreement of cross sections with prior data implies small contribution from the interference terms, and the confirmation of the change in t slopes between the low- and high-−t regions previously observed in photoproduction indicates the changing nature of the electroproduction reaction in our kinematic regime., Published by Inst., Woodbury, NY

Published
2019
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20. First measurement of unpolarized semi-inclusive deep-inelastic scattering cross sections from a $^3$He target

Author

Allada, K., Aniol, K., Annand, J.R.M., Averett, T., Benmokhtar, F., Bertozzi, W., Bradshaw, P.C., Bosted, P., Camsonne, A., Canan, M., Cates, G.D., Chen, C., Chen, J.-P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J.C., Cusanno, F., Dalton, M.M., Deconinck, W., de Jager, C.W., de Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P.A.M., Dutta, C., Dutta, D., El Fassi, L., Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D.W., Holmstrom, T., Huang, J., Huang, M., Ibrahim, H.F., Iodice, M., Jiang, X., Jin, G., Jones, M.K., Katich, J., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., Lerose, J.J., Li, X., Li, Y., Lindgren, R., Liu, T., Liyanage, N., Long, E., Lu, H.-J., Margaziotis, D.J., Markowitz, P., Marrone, S., Mcnulty, D., Meziani, Z.-E., Michaels, R., Moffit, B., Muñoz Camacho, C., Nanda, S., Narayan, A., Nelyubin, V., Norum, B., Oh, Y., Osipenko, M., Parno, D., Peng, J.-C., Phillips, S.K., Posik, M., Puckett, A.J.R., Qian, X., Qiang, Y., Rakhman, A., Ransome, R., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M.H., Širca, S., Stepanyan, S., Subedi, R., Sulkosky, V., Tang, L.-G., Tobias, W.A., Urciuoli, G.M., Vilardi, I., Wang, K., Wojtsekhowski, B., Wang, Y., Yan, X., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhan, X., Zhang, Y.-W., Zhao, B., Zhao, Y.X., Zheng, X., Zhu, L., Zhu, X., Zong, X., Laboratoire de Physique de Clermont ( LPC ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Clermont Auvergne ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ), Jefferson Lab Hall A, Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS)

Subjects
+electron+pi%2B%22">electron helium --> electron pi+, HRS, helium: target, cross section: ratio, plane wave, HERMES, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], cross section: angular dependence, COMPASS, Sivers function, quantum chromodynamics, electron: beam, [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], +electron+pi%22">electron helium --> electron pi, deep inelastic scattering: semi-inclusive reaction, nucleus, parametrization, showers, model: quark parton, pi+: production, kinematics, differential cross section, quark: valence, higher-dimensional, numerical calculations: Monte Carlo, experimental results, Jefferson Lab
Abstract

International audience; The unpolarized semi-inclusive deep-inelastic scattering (SIDIS) differential cross sections in He3(e,e′π±)X have been measured for the first time in Jefferson Lab experiment E06-010 with a 5.9GeVe− beam on a He3 gas target. The experiment focuses on the valence quark region, covering a kinematic range 0.12

Published
2017
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21. First measurement of unpolarized semi-inclusive deep-inelastic scattering cross sections from a ³He target

Author

Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Allada, Kalyan C, Bertozzi, William, Deconinck, Wouter, Gilad, Shalev, Chuang, Jeffrey H., Moffit, Bryan J, Puckett, Andrew James R., Sulkosky, Vincent, Yan, X., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., Bradshaw, P. C., Bosted, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., Chen, J.-P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J. C., Cusanno, F., Dalton, M. M., de Jager, C. W., De Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P. A. M., Dutta, C., Dutta, D., El Fassi, L., Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D. W., Holmstrom, T., Huang, M., Ibrahim, H. F., Iodice, M., Jiang, X., Jin, G., Jones, M. K., Katich, J., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., LeRose, J. J., Li, X., Li, Y., Lindgren, R., Liu, T., Liyanage, N., Long, E., Lu, H.-J., Margaziotis, D. J., Markowitz, P., Marrone, S., McNulty, D., Meziani, Z.-E., Michaels, R., Muñoz Camacho, C., Nanda, S., Narayan, A., Nelyubin, V., Norum, B., Oh, Y., Osipenko, M., Parno, D., Peng, J.-C., Phillips, S. K., Posik, M., Qian, X., Qiang, Y., Rakhman, A., Ransome, R., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M. H., Širca, S., Stepanyan, S., Subedi, R., Tang, L.-G., Tobias, W. A., Urciuoli, G. M., Vilardi, I., Wang, K., Wojtsekhowski, B., Wang, Y., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhan, X., Zhang, Y., Zhang, Y.-W., Zhao, B., Zhao, Y. X., Zheng, X., Zhu, L., Zhu, X., Zong, X., Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Allada, Kalyan C, Bertozzi, William, Deconinck, Wouter, Gilad, Shalev, Chuang, Jeffrey H., Moffit, Bryan J, Puckett, Andrew James R., Sulkosky, Vincent, Yan, X., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., Bradshaw, P. C., Bosted, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., Chen, J.-P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J. C., Cusanno, F., Dalton, M. M., de Jager, C. W., De Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P. A. M., Dutta, C., Dutta, D., El Fassi, L., Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D. W., Holmstrom, T., Huang, M., Ibrahim, H. F., Iodice, M., Jiang, X., Jin, G., Jones, M. K., Katich, J., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., LeRose, J. J., Li, X., Li, Y., Lindgren, R., Liu, T., Liyanage, N., Long, E., Lu, H.-J., Margaziotis, D. J., Markowitz, P., Marrone, S., McNulty, D., Meziani, Z.-E., Michaels, R., Muñoz Camacho, C., Nanda, S., Narayan, A., Nelyubin, V., Norum, B., Oh, Y., Osipenko, M., Parno, D., Peng, J.-C., Phillips, S. K., Posik, M., Qian, X., Qiang, Y., Rakhman, A., Ransome, R., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M. H., Širca, S., Stepanyan, S., Subedi, R., Tang, L.-G., Tobias, W. A., Urciuoli, G. M., Vilardi, I., Wang, K., Wojtsekhowski, B., Wang, Y., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhan, X., Zhang, Y., Zhang, Y.-W., Zhao, B., Zhao, Y. X., Zheng, X., Zhu, L., Zhu, X., and Zong, X.

Abstract

United States. Department of Energy (contract DE-AC05-06OR23177), United States. Department of Energy (contract DE-FG02-03ER41231)

Published
2017

22. Beam-Target Double Spin Asymmetry A_LT in Charged Pion Production from Deep Inelastic Scattering on a Transversely Polarized He-3 Target at 1.4

Author

Huang, J., Allada, K., Dutta, C., Katich, J., Qian, X., Wang, Y., Zhang, Y., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., Bertozzi, W., Bradshaw, P. C., Bosted, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., Chen, J. -P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J. C., Cusanno, F., Dalton, M. M., Deconinck, W., de Jager, C. W., De Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P. A. M., Dutta, D., Fassi, L. El, Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilad, S., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D. W., Holmstrom, T., Huang, M., Ibrahim, H. F., Iodice, M., Jiang, X., Jin, G., Jones, M. K., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., LeRose, J. J., Li, X., Li, Y., Lindgren, R., Liyanage, N., Long, E., Lu, H. -J., Margaziotis, D. J., Markowitz, P., Marrone, S., McNulty, D., Meziani, Z. -E., Michaels, R., Moffit, B., Camacho, C. Mu��oz, Nanda, S., Narayan, A., Nelyubin, V., Norum, B., Oh, Y., Osipenko, M., Parno, D., Peng, J. C., Phillips, S. K., Posik, M., Puckett, A. J. R., Qiang, Y., Rakhman, A., Ransome, R. D., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M. H., ��irca, S., Stepanyan, S., Subedi, R., Sulkosky, V., Tang, L. -G., Tobias, A., Urciuoli, G. M., Vilardi, I., Wang, K., Wojtsekhowski, B., Yan, X., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhan, X., Zhang, Y. -W., Zhao, B., Zheng, X., Zhu, L., Zhu, X., Zong, X., Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and HALL A

Subjects
High Energy Physics - Experiment (hep-ex), High Energy Physics::Lattice, Nuclear Theory, Mathematics::Classical Analysis and ODEs, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

We report the first measurement of the double-spin asymmetry $A_{LT}$ for charged pion electroproduction in semi\nobreakdash-inclusive deep\nobreakdash-inelastic electron scattering on a transversely polarized $^{3}$He target. The kinematics focused on the valence quark region, $0.16, 6 pages, 2 figures, 1 tables, published in PRL

Published
2012
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23. Single spin asymmetries in charged kaon production from semi-inclusive deep inelastic scattering on a transversely polarized [superscript 3]He target

Author

Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Allada, Kalyan C., Bertozzi, William, Deconinck, Wouter, Gilad, Shalev, Huang, J., Moffit, Bryan J., Puckett, A. J. R., Sulkosky, V., Zhan, X., Zhao, Y. X., Wang, Y., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., Bradshaw, P. C., Bosted, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., Chen, J.-P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J. C., Cusanno, F., Dalton, M. M., de Jager, C. W., De Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P. A. M., Dutta, C., Dutta, D., El Fassi, L., Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D. W., Holmstrom, T., Huang, M., Ibrahim, H. F., Iodice, M., Jiang, X., Jin, G., Jones, M. K., Katich, J., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., LeRose, J. J., Li, X., Li, Y., Lindgren, R., Liyanage, N., Long, E., Lu, H.-J., Margaziotis, D. J., Markowitz, P., Marrone, S., McNulty, D., Meziani, Z.-E., Michaels, R., Munoz Camacho, C., Nanda, S., Narayan, A., Nelyubin, V., Norum, B. E., Oh, Y., Osipenko, M., Parno, D., Peng, J.-C., Phillips, S. K., Posik, M., Qian, X., Qiang, Y., Rakhman, A., Ransome, R., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M. H., Širca, S., Stepanyan, S., Subedi, R., Tang, L.-G., Tobias, A., Urciuoli, G. M., Vilardi, I., Wang, K., Wojtsekhowski, B., Yan, X., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhang, Y., Zhang, Y.-W., Zhao, B., Zheng, X., Zhu, L., Zhu, X., Zong, X., Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Allada, Kalyan C., Bertozzi, William, Deconinck, Wouter, Gilad, Shalev, Huang, J., Moffit, Bryan J., Puckett, A. J. R., Sulkosky, V., Zhan, X., Zhao, Y. X., Wang, Y., Aniol, K., Annand, J. R. M., Averett, T., Benmokhtar, F., Bradshaw, P. C., Bosted, P., Camsonne, A., Canan, M., Cates, G. D., Chen, C., Chen, J.-P., Chen, W., Chirapatpimol, K., Chudakov, E., Cisbani, E., Cornejo, J. C., Cusanno, F., Dalton, M. M., de Jager, C. W., De Leo, R., Deng, X., Deur, A., Ding, H., Dolph, P. A. M., Dutta, C., Dutta, D., El Fassi, L., Frullani, S., Gao, H., Garibaldi, F., Gaskell, D., Gilman, R., Glamazdin, O., Golge, S., Guo, L., Hamilton, D., Hansen, O., Higinbotham, D. W., Holmstrom, T., Huang, M., Ibrahim, H. F., Iodice, M., Jiang, X., Jin, G., Jones, M. K., Katich, J., Kelleher, A., Kim, W., Kolarkar, A., Korsch, W., LeRose, J. J., Li, X., Li, Y., Lindgren, R., Liyanage, N., Long, E., Lu, H.-J., Margaziotis, D. J., Markowitz, P., Marrone, S., McNulty, D., Meziani, Z.-E., Michaels, R., Munoz Camacho, C., Nanda, S., Narayan, A., Nelyubin, V., Norum, B. E., Oh, Y., Osipenko, M., Parno, D., Peng, J.-C., Phillips, S. K., Posik, M., Qian, X., Qiang, Y., Rakhman, A., Ransome, R., Riordan, S., Saha, A., Sawatzky, B., Schulte, E., Shahinyan, A., Shabestari, M. H., Širca, S., Stepanyan, S., Subedi, R., Tang, L.-G., Tobias, A., Urciuoli, G. M., Vilardi, I., Wang, K., Wojtsekhowski, B., Yan, X., Yao, H., Ye, Y., Ye, Z., Yuan, L., Zhang, Y., Zhang, Y.-W., Zhao, B., Zheng, X., Zhu, L., Zhu, X., and Zong, X.

Abstract

We report the first measurement of target single spin asymmetries of charged kaons produced in semi-inclusive deep inelastic scattering of electrons off a transversely polarized [superscript 3]He target. Both the Collins and Sivers moments, which are related to the nucleon transversity and Sivers distributions, respectively, are extracted over the kinematic range of 0.1 < x[subscript bj] < 0.4 for K[superscript +] and K[superscript −] production. While the Collins and Sivers moments for K[superscript +] are consistent with zero within the experimental uncertainties, both moments for K[superscript −] favor negative values. The Sivers moments are compared to the theoretical prediction from a phenomenological fit to the world data. While the K[superscript +] Sivers moments are consistent with the prediction, the K[superscript −] results differ from the prediction at the 2-sigma level., National Science Foundation (U.S.), United States. Dept. of Energy (Contract DE-AC05-06OR23177), National Natural Science Foundation (China) (Grant 11135002), National Natural Science Foundation (China) (Grant 11120101004)

Published
2014

24. Measurement of the Target-Normal Single-Spin Asymmetry in Deep-Inelastic Scattering from the Reaction He3↑(e,e′)X

Author

Katich, J., primary, Qian, X., additional, Zhao, Y. X., additional, Allada, K., additional, Aniol, K., additional, Annand, J. R. M., additional, Averett, T., additional, Benmokhtar, F., additional, Bertozzi, W., additional, Bradshaw, P. C., additional, Bosted, P., additional, Camsonne, A., additional, Canan, M., additional, Cates, G. D., additional, Chen, C., additional, Chen, J.-P., additional, Chen, W., additional, Chirapatpimol, K., additional, Chudakov, E., additional, Cisbani, E., additional, Cornejo, J. C., additional, Cusanno, F., additional, Dalton, M. M., additional, Deconinck, W., additional, de Jager, C. W., additional, De Leo, R., additional, Deng, X., additional, Deur, A., additional, Ding, H., additional, Dolph, P. A. M., additional, Dutta, C., additional, Dutta, D., additional, El Fassi, L., additional, Frullani, S., additional, Gao, H., additional, Garibaldi, F., additional, Gaskell, D., additional, Gilad, S., additional, Gilman, R., additional, Glamazdin, O., additional, Golge, S., additional, Guo, L., additional, Hamilton, D., additional, Hansen, O., additional, Higinbotham, D. W., additional, Holmstrom, T., additional, Huang, J., additional, Huang, M., additional, Ibrahim, H. F., additional, Iodice, M., additional, Jiang, X., additional, Jin, G., additional, Jones, M. K., additional, Kelleher, A., additional, Kim, W., additional, Kolarkar, A., additional, Korsch, W., additional, LeRose, J. J., additional, Li, X., additional, Li, Y., additional, Lindgren, R., additional, Liyanage, N., additional, Long, E., additional, Lu, H.-J., additional, Margaziotis, D. J., additional, Markowitz, P., additional, Marrone, S., additional, McNulty, D., additional, Meziani, Z.-E., additional, Michaels, R., additional, Moffit, B., additional, Muñoz Camacho, C., additional, Nanda, S., additional, Narayan, A., additional, Nelyubin, V., additional, Norum, B., additional, Oh, Y., additional, Osipenko, M., additional, Parno, D., additional, Peng, J. C., additional, Phillips, S. K., additional, Posik, M., additional, Puckett, A. J. R., additional, Qiang, Y., additional, Rakhman, A., additional, Ransome, R. D., additional, Riordan, S., additional, Saha, A., additional, Sawatzky, B., additional, Schulte, E., additional, Shahinyan, A., additional, Shabestari, M. H., additional, Širca, S., additional, Stepanyan, S., additional, Subedi, R., additional, Sulkosky, V., additional, Tang, L.-G., additional, Tobias, A., additional, Urciuoli, G. M., additional, Vilardi, I., additional, Wang, K., additional, Wang, Y., additional, Wojtsekhowski, B., additional, Yan, X., additional, Yao, H., additional, Ye, Y., additional, Ye, Z., additional, Yuan, L., additional, Zhan, X., additional, Zhang, Y., additional, Zhang, Y.-W., additional, Zhao, B., additional, Zheng, X., additional, Zhu, L., additional, Zhu, X., additional, and Zong, X., additional

Published
2014
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27. Scaling study of the pion electroproduction cross sections

Author

Horn, T., primary, Qian, X., additional, Arrington, J., additional, Asaturyan, R., additional, Benmokthar, F., additional, Boeglin, W., additional, Bosted, P., additional, Bruell, A., additional, Christy, M. E., additional, Chudakov, E., additional, Clasie, B., additional, Dalton, M. M., additional, Daniel, A., additional, Day, D., additional, Dutta, D., additional, El Fassi, L., additional, Ent, R., additional, Fenker, H., additional, Ferrer, J., additional, Fomin, N., additional, Gao, H., additional, Garrow, K., additional, Gaskell, D., additional, Gray, C., additional, Huber, G. M., additional, Jones, M. K., additional, Kalantarians, N., additional, Keppel, C. E., additional, Kramer, K., additional, Li, Y., additional, Liang, Y., additional, Lung, A. F., additional, Malace, S., additional, Markowitz, P., additional, Matsumura, A., additional, Meekins, D., additional, Mertens, T., additional, Miyoshi, T., additional, Mkrtchyan, H., additional, Monson, R., additional, Navasardyan, T., additional, Niculescu, G., additional, Niculescu, I., additional, Okayasu, Y., additional, Opper, A. K., additional, Perdrisat, C., additional, Punjabi, V., additional, Rauf, A. W., additional, Rodriguez, V., additional, Rohe, D., additional, Seely, J., additional, Segbefia, E., additional, Smith, G. R., additional, Sumihama, M., additional, Tadevosyan, V., additional, Tang, L. G., additional, Tvaskis, V., additional, Villano, A., additional, Vulcan, W., additional, Wesselmann, F. R., additional, Wood, S. A., additional, Yuan, L., additional, and Zheng, X. C., additional

Published
2008
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28. Charged pion form factor betweenQ2=0.60and 2.45GeV2. I. Measurements of the cross section for the1H(e,e'π+)nreaction

Author

Blok, H. P., primary, Horn, T., additional, Huber, G. M., additional, Beise, E. J., additional, Gaskell, D., additional, Mack, D. J., additional, Tadevosyan, V., additional, Volmer, J., additional, Abbott, D., additional, Aniol, K., additional, Anklin, H., additional, Armstrong, C., additional, Arrington, J., additional, Assamagan, K., additional, Avery, S., additional, Baker, O. K., additional, Barrett, B., additional, Bochna, C., additional, Boeglin, W., additional, Brash, E. J., additional, Breuer, H., additional, Chang, C. C., additional, Chant, N., additional, Christy, M. E., additional, Dunne, J., additional, Eden, T., additional, Ent, R., additional, Fenker, H., additional, Gibson, E., additional, Gilman, R., additional, Gustafsson, K., additional, Hinton, W., additional, Holt, R. J., additional, Jackson, H., additional, Jin, S., additional, Jones, M. K., additional, Keppel, C. E., additional, Kim, P. H., additional, Kim, W., additional, King, P. M., additional, Klein, A., additional, Koltenuk, D., additional, Kovaltchouk, V., additional, Liang, M., additional, Liu, J., additional, Lolos, G. J., additional, Lung, A., additional, Margaziotis, D. J., additional, Markowitz, P., additional, Matsumura, A., additional, McKee, D., additional, Meekins, D., additional, Mitchell, J., additional, Miyoshi, T., additional, Mkrtchyan, H., additional, Mueller, B., additional, Niculescu, G., additional, Niculescu, I., additional, Okayasu, Y., additional, Pentchev, L., additional, Perdrisat, C., additional, Pitz, D., additional, Potterveld, D., additional, Punjabi, V., additional, Qin, L. M., additional, Reimer, P., additional, Reinhold, J., additional, Roche, J., additional, Roos, P. G., additional, Sarty, A., additional, Shin, I. K., additional, Smith, G. R., additional, Stepanyan, S., additional, Tang, L. G., additional, Tvaskis, V., additional, van der Meer, R. L. J., additional, Vansyoc, K., additional, Westrum, D. Van, additional, Vidakovic, S., additional, Vulcan, W., additional, Warren, G., additional, Wood, S. A., additional, Xu, C., additional, Yan, C., additional, Zhao, W.-X., additional, Zheng, X., additional, and Zihlmann, B., additional

Published
2008
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29. Charged pion form factor betweenQ2=0.60and2.45 GeV2. II. Determination of, and results for, the pion form factor

Author

Huber, G. M., primary, Blok, H. P., additional, Horn, T., additional, Beise, E. J., additional, Gaskell, D., additional, Mack, D. J., additional, Tadevosyan, V., additional, Volmer, J., additional, Abbott, D., additional, Aniol, K., additional, Anklin, H., additional, Armstrong, C., additional, Arrington, J., additional, Assamagan, K., additional, Avery, S., additional, Baker, O. K., additional, Barrett, B., additional, Bochna, C., additional, Boeglin, W., additional, Brash, E. J., additional, Breuer, H., additional, Chang, C. C., additional, Chant, N., additional, Christy, M. E., additional, Dunne, J., additional, Eden, T., additional, Ent, R., additional, Fenker, H., additional, Gibson, E. F., additional, Gilman, R., additional, Gustafsson, K., additional, Hinton, W., additional, Holt, R. J., additional, Jackson, H., additional, Jin, S., additional, Jones, M. K., additional, Keppel, C. E., additional, Kim, P. H., additional, Kim, W., additional, King, P. M., additional, Klein, A., additional, Koltenuk, D., additional, Kovaltchouk, V., additional, Liang, M., additional, Liu, J., additional, Lolos, G. J., additional, Lung, A., additional, Margaziotis, D. J., additional, Markowitz, P., additional, Matsumura, A., additional, McKee, D., additional, Meekins, D., additional, Mitchell, J., additional, Miyoshi, T., additional, Mkrtchyan, H., additional, Mueller, B., additional, Niculescu, G., additional, Niculescu, I., additional, Okayasu, Y., additional, Pentchev, L., additional, Perdrisat, C., additional, Pitz, D., additional, Potterveld, D., additional, Punjabi, V., additional, Qin, L. M., additional, Reimer, P. E., additional, Reinhold, J., additional, Roche, J., additional, Roos, P. G., additional, Sarty, A., additional, Shin, I. K., additional, Smith, G. R., additional, Stepanyan, S., additional, Tang, L. G., additional, Tvaskis, V., additional, van der Meer, R. L. J., additional, Vansyoc, K., additional, Westrum, D. Van, additional, Vidakovic, S., additional, Vulcan, W., additional, Warren, G., additional, Wood, S. A., additional, Xu, C., additional, Yan, C., additional, Zhao, W.-X., additional, Zheng, X., additional, and Zihlmann, B., additional

Published
2008
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30. Determination of the pion charge form factor forQ2=0.60–1.60 GeV2

Author

Tadevosyan, V., primary, Blok, H. P., additional, Huber, G. M., additional, Abbott, D., additional, Anklin, H., additional, Armstrong, C., additional, Arrington, J., additional, Assamagan, K., additional, Avery, S., additional, Baker, O. K., additional, Bochna, C., additional, Brash, E. J., additional, Breuer, H., additional, Chant, N., additional, Dunne, J., additional, Eden, T., additional, Ent, R., additional, Gaskell, D., additional, Gilman, R., additional, Gustafsson, K., additional, Hinton, W., additional, Jackson, H., additional, Jones, M. K., additional, Keppel, C., additional, Kim, P. H., additional, Kim, W., additional, Klein, A., additional, Koltenuk, D., additional, Liang, M., additional, Lolos, G. J., additional, Lung, A., additional, Mack, D. J., additional, McKee, D., additional, Meekins, D., additional, Mitchell, J., additional, Mkrtchyan, H., additional, Mueller, B., additional, Niculescu, G., additional, Niculescu, I., additional, Pitz, D., additional, Potterveld, D., additional, Qin, L. M., additional, Reinhold, J., additional, Shin, I. K., additional, Stepanyan, S., additional, Tang, L. G., additional, Meer, R. L. J. van der, additional, Vansyoc, K., additional, Westrum, D. Van, additional, Volmer, J., additional, Vulcan, W., additional, Wood, S., additional, Yan, C., additional, Zhao, W.-X., additional, and Zihlmann, B., additional

Published
2007
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31. Determination of the Pion Charge Form Factor atQ2=1.60and2.45(GeV/c)2

Author

Horn, T., primary, Aniol, K., additional, Arrington, J., additional, Barrett, B., additional, Beise, E. J., additional, Blok, H. P., additional, Boeglin, W., additional, Brash, E. J., additional, Breuer, H., additional, Chang, C. C., additional, Christy, M. E., additional, Ent, R., additional, Gaskell, D., additional, Gibson, E., additional, Holt, R. J., additional, Huber, G. M., additional, Jin, S., additional, Jones, M. K., additional, Keppel, C. E., additional, Kim, W., additional, King, P. M., additional, Kovaltchouk, V., additional, Liu, J., additional, Lolos, G. J., additional, Mack, D. J., additional, Margaziotis, D. J., additional, Markowitz, P., additional, Matsumura, A., additional, Meekins, D., additional, Miyoshi, T., additional, Mkrtchyan, H., additional, Niculescu, I., additional, Okayasu, Y., additional, Pentchev, L., additional, Perdrisat, C., additional, Potterveld, D., additional, Punjabi, V., additional, Reimer, P., additional, Reinhold, J., additional, Roche, J., additional, Roos, P. G., additional, Sarty, A., additional, Smith, G. R., additional, Tadevosyan, V., additional, Tang, L. G., additional, Tvaskis, V., additional, Vidakovic, S., additional, Volmer, J., additional, Vulcan, W., additional, Warren, G., additional, Wood, S. A., additional, Xu, C., additional, and Zheng, X., additional

Published
2006
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32. Measurement of the Charged Pion Electromagnetic Form Factor

Author

Volmer, J., primary, Abbott, D., additional, Anklin, H., additional, Armstrong, C., additional, Arrington, J., additional, Assamagan, K., additional, Avery, S., additional, Baker, O. K., additional, Blok, H. P., additional, Bochna, C., additional, Brash, E. J., additional, Breuer, H., additional, Chant, N., additional, Dunne, J., additional, Eden, T., additional, Ent, R., additional, Gaskell, D., additional, Gilman, R., additional, Gustafsson, K., additional, Hinton, W., additional, Huber, G. M., additional, Jackson, H., additional, Jones, M. K., additional, Keppel, C., additional, Kim, P. H., additional, Kim, W., additional, Klein, A., additional, Koltenuk, D., additional, Liang, M., additional, Lolos, G. J., additional, Lung, A., additional, Mack, D. J., additional, McKee, D., additional, Meekins, D., additional, Mitchell, J., additional, Mkrtchyan, H., additional, Mueller, B., additional, Niculescu, G., additional, Niculescu, I., additional, Pitz, D., additional, Potterveld, D., additional, Qin, L. M., additional, Reinhold, J., additional, Shin, I. K., additional, Stepanyan, S., additional, Tadevosyan, V., additional, Tang, L. G., additional, van der Meer, R. L. J., additional, Vansyoc, K., additional, Van Westrum, D., additional, Vulcan, W., additional, Wood, S., additional, Yan, C., additional, Zhao, W.-X., additional, and Zihlmann, B., additional

Published
2001
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33. Search for a strangeness -1 dibaryon below the ΣNthreshold

Author

Johnston, K., primary, Hungerford, E. V., additional, Kishimoto, T., additional, Mayes, B. W., additional, Tang, L. G., additional, Bart, S., additional, Chrien, R. E., additional, Lee, L., additional, Pile, P. H., additional, Sutter, R., additional, Hicks, K., additional, Fukuda, T., additional, Krauss, R., additional, Gill, D. R., additional, Stearns, R., additional, and Seyfarth, H., additional

Published
1992
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34. Study of hypernuclei by associated production

Author

Pile, P. H., primary, Bart, S., additional, Chrien, R. E., additional, Millener, D. J., additional, Sutter, R. J., additional, Tsoupas, N., additional, Peng, J.-C., additional, Mishra, C. S., additional, Hungerford, E. V., additional, Kishimoto, T., additional, Tang, L.-G., additional, von Witsch, W., additional, Xu, Z., additional, Maeda, K., additional, Gill, D., additional, McCrady, R., additional, Quinn, B., additional, Seydoux, J., additional, Sleight, J. W., additional, Stearns, R. L., additional, Plendl, H., additional, Rafatian, A., additional, and Reidy, J., additional

Published
1991
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35. Nonleptonic weak decay ofHeΛ5andCΛ12

Author

Szymanski, J. J., primary, Barnes, P. D., additional, Diebold, G. E., additional, Eisenstein, R. A., additional, Franklin, G. B., additional, Grace, R., additional, Hertzog, D. W., additional, Maher, C. J., additional, Quinn, B. P., additional, Rieder, R., additional, Seydoux, J., additional, Wharton, W. R., additional, Bart, S., additional, Chrien, R. E., additional, Pile, P., additional, Sutter, R., additional, Xu, Y., additional, Hackenburg, R., additional, Hungerford, E. V., additional, Kishimoto, T., additional, Tang, L. G., additional, Bassalleck, B., additional, and Stearns, R. L., additional

Published
1991
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36. Search for the Production of a New Quark Flavor at the c.m.-System Energies between 33 and 35.8 GeV

Author

Barber, D. P., Becker, U., Chen, M., Cheng, C. P., Chu, Y. S., Clare, R., Duinker, P., Fang, G. Y., Fesefeldt, H., Fong, D., Fukushima, M., Guo, J. C., Benda, H., Hariri, A., Herten, G., Ho, M. C., Hsu, H. K., Hsu, T. T., Kadel, R. W., Krenz, W., Li, J., Li, Q. Z., Lu, M., Bohm, A., Luckey, David, Ma, C. M., Ma, D. A., Massaro, G. G. G., Matsuda, T., Newman, H., Pohl, M., Poschmann, F. P., Revol, J. P., Rohde, M., Branson, J. G., Rykaczewski, H., Sinram, K., Tang, H. W., Tang, L. G., Ting, Samuel C. C., Tung, K. L., Vannucci, F., Wang, X. R., Wei, P. S., White, M., Bron, J., Wu, G. H., Wu, T. W., Xi, J. P., Yang, P. C., Yu, C. C., Yu, X. H., Zhang, N. L., Zhu, R. Y., Mark-J Collaboration, Buikman, D., Burger, J. D., Chang, C. C., and Chen, H. S.

Subjects
Quark, Particle physics, MUON [ELECTROPRODUCTION], High Energy Physics::Lattice, Electron–positron annihilation, Hadron, General Physics and Astronomy, DESY PETRA STOR, Elementary particle, TOTAL CROSS SECTION [RATIO], SPECTRUM [THRUST], Nuclear physics, ELECTROPRODUCTION [HADRON], TOTAL CROSS SECTION [ENERGY DEPENDENCE], ddc:550, TOP [SEARCH FOR], ELECTROPRODUCTION [MUON], THRUST [SPECTRUM], Nuclear Experiment, EXPERIMENTAL RESULTS, ENERGY DEPENDENCE [TOTAL CROSS SECTION], Quantum chromodynamics, Physics, HADRON [ELECTROPRODUCTION], Annihilation, Muon, JET [ELECTROPRODUCTION], High Energy Physics::Phenomenology, Quark model, COLLIDING BEAMS [ELECTRON POSITRON], ELECTRON POSITRON [COLLIDING BEAMS], INCLUSIVE REACTION [ELECTRON POSITRON], RATIO [TOTAL CROSS SECTION], ELECTRON POSITRON [ANNIHILATION], ANNIHILATION [ELECTRON POSITRON], ELECTROPRODUCTION [JET], MARK J, High Energy Physics::Experiment, 35.0: 35.8 GEV-CM [33.0]
Abstract

This paper reports the results of a study of hadron production in e/sup +/e/sup -/ collisions at c.m. energies of 33, 35, and 35.8 GeV. Production of a new quark flavor has been sought. The measured values of the total cross section, the thrust distributions, and the study of inclusive muon production show no evidence for the production of a new charge-2/3e quark near threshold. In addition, during an energy scan in the region 29.9< or =..sqrt..s< or =31.6 GeV, no hadron resonance indicating the existence of a bound state composed of charge-2/3e quarks has been found.

Published
1980
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38. Discovery of Three Jet Events and a Test of Quantum Chromodynamics at PETRA Energies

Author

Barber, D. P., Becker, U., Benda, H., Boehm, A., Branson, J. G., Bron, J., Buikman, D., Burger, J., Chang, C. C., Chen, H. S., Chen, M., Cheng, C. P., Chu, Y. S., Clare, R., Duinker, P., Fang, G. Y., Fesefeldt, H., Fong, D., Fukushima, M., Guo, J. C., Hariri, A., Herten, G., Ho, M. C., Hsu, H. K., Hsu, T. T., Kadel, R. W., Krenz, W., Li, J., Li, Q. Z., Lu, M., Luckey, David, Ma, D. A., Ma, C. M., Massaro, G. G. G., Matsuda, T., Newman, H., Paradiso, Joseph A., Poschmann, F. P., Revol, J. P., Rohde, M., Rykaczewski, H., Sinram, K., Tang, H. W., Tang, L. G., Ting, Samuel C. C., Tung, K. L., Vannucci, F., Wang, X. R., Wei, P. S., White, M., Wu, G. H., Wu, T. W., Xi, J. P., Yang, P. C., Yu, X. H., Zhang, N. L., and Zhu, R. Y.

Subjects
+QUARK+ANTIQUARK%22">ELECTRON POSITRON --> QUARK ANTIQUARK, DESY PETRA STOR, MAGNETIC SPECTROMETER: MARK J, MULTIPLE PRODUCTION: HADRON, +QUARK+ANTIQUARK+GLUON%22">ELECTRON POSITRON --> QUARK ANTIQUARK GLUON, GLUON: JET, COLLIDING BEAMS: ELECTRON POSITRON, EXPERIMENTAL RESULTS, JET: THRUST, QUARK: JET, JET: ELECTROPRODUCTION, +%28N%29HADRON%22">ELECTRON POSITRON --> (N)HADRON, 17.0: 27.4: 30.0: 31.6 GEV-CM: ((3)): ((4)), FINAL STATE: (3JET), ELECTROPRODUCTION: JET, HADRON: MULTIPLE PRODUCTION, ANNIHILATION: ELECTRON POSITRON, ENERGY SPECTRUM, ELECTRON POSITRON: COLLIDING BEAMS, QUANTUM CHROMODYNAMICS: VALIDITY TEST, JET: ENERGY, QUARK ANTIQUARK: PAIR PRODUCTION, INTERPRETATION OF EXPERIMENTS, ELECTRON POSITRON: ANNIHILATION, PAIR PRODUCTION: QUARK ANTIQUARK
Abstract

Physical review letters 43(12), 830 - 833 (1979). doi:10.1103/PhysRevLett.43.830, We report the analysis of the spatial energy distribution of data for e+e−→hadrons obtained with the MARK-J detector at PETRA. We define the quantity 'oblateness' to describe the flat shape of the energy configuration and the three-jet structure which is unambiguously observed for the first time. Our data can be explained by quantum chromodynamic predictions for the production of quark-antiquark pairs accompanied by hard noncollinear gluons., Published by APS, College Park, Md.

Published
1979
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39. Test of Universality of Charged Leptons

Author

Barber, D. P., Becker, U., Chen, M., Cheng, C. P., Chu, Y. S., Clare, R., Duinker, P., Fang, G. Y., Fesefeldt, H., Fong, D., Fukushima, M., Guo, J. C., Benda, H., Hariri, A., Herten, G., Ho, M. C., Hsu, H. K., Hsu, T. T., Kadel, R. W., Krenz, W., Li, J., Li, Q. Z., Lu, M., Boehm, A., Luckey, D., Ma, D. A., Ma, C. M., Massaro, G. G. G., Matsuda, T., Newman, H., Paradiso, J., Poschmann, F. P., Revol, J. P., Rohde, M., Branson, J. G., Rykaczewski, H., Sinram, K., Tang, H. W., Tang, L. G., Ting, Samuel C. C., Tung, K. L., Vannucci, F., Wang, X. R., Wei, P. S., White, M., Bron, J., Wu, G. H., Wu, T. W., Xi, J. P., Yang, P. C., Yu, X. H., Zhang, N. L., Zhu, R. Y., Mark-J Collaboration, Buikman, D., Burger, J., Chang, C. C., and Chen, H. S.

Subjects
Elastic scattering, Physics, Particle physics, Muon, Electron–positron annihilation, General Physics and Astronomy, Elementary particle, Fermion, Nuclear physics, Pair production, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, ddc:550, Bhabha scattering, Lepton
Abstract

Physical review letters 43(26), 1915 - 1918 (1979). doi:10.1103/PhysRevLett.43.1915, Published by APS, College Park, Md.

Published
1979
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40. Experimental Study of Heavy Charged Leptons and Search for Scalar Partners of Muons at PETRA $( 12 GeV <~ E c . m . <~ 36.7 GeV )$

Author

Barber, D. P., Becker, U., Chang, C. C., Chen, H. S., Chen, M., Cheng, C. P., Chu, Y. S., Clare, R., Duinker, P., Fang, G. Y., Feng, Z. Y., Fesefeldt, H. S., Bei, G. D., Fong, D., Fukushima, M., Guo, J. C., Hariri, A., Herten, G., Ho, M. C., Hsu, T. T., Jiang, D. Z., Kadel, R. W., Krenz, W., Berghoff, G., Li, J., Li, Q. Z., Luckey, D., Luit, E. J., Ma, C. M., Ma, D. A., Massaro, G. G. G., Matsuda, T., Newman, H., Pohl, M., Boehm, A., Poschmann, F. P., Revol, J. P., Rohde, M., Rykaczewski, H., Schulz, I., Sinram, K., Steuer, M., Tang, H. W., Tang, L. G., Teuchert, D., Branson, J. G., Ting, Samuel C. C., Tung, K. L., Vannucci, F., Wang, X. R., Wang, Y. X., Warnock, J., White, M., Wu, G. H., Wu, S. X., Wu, T. W., Bron, J., Yang, P. C., Yu, C. C., Zhang, N. L., Zhu, R. Y., Mark-J Collaboration, Buikman, D., Burger, J. D., and Capell, M.

Subjects
ddc:550
Abstract

Physical review letters 45(24), 1904 - 1907 (1980). doi:10.1103/PhysRevLett.45.1904, Published by APS, College Park, Md.

Published
1980
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41. Studies of hypernuclei by associated production

Author

Chrien, Robert E., primary, Pile, P.H., additional, Chrien, R.E., additional, Bart, S., additional, Sutter, R.J., additional, Tsoupas, N., additional, Peng, J.-C., additional, Mishra, S., additional, Kishimoto, T., additional, Tang, L.-G., additional, Xu, Z., additional, von Witsch, W., additional, Hungerford, E.V., additional, Maeda, K., additional, Gill, D., additional, Stearns, R.L., additional, Quinn, B., additional, McCrady, R., additional, Seydoux, J., additional, Plendl, H., additional, and Reidy, J., additional

Published
1988
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42. Experimental Study of Heavy Charged Leptons and Search for Scalar Partners of Muons at PETRA (12 GeV<~Ec.m.<~36.7 GeV)

Author

Barber, D. P., primary, Becker, U., additional, Bei, G. D., additional, Berghoff, G., additional, Boehm, A., additional, Branson, J. G., additional, Bron, J., additional, Buikman, D., additional, Burger, J. D., additional, Capell, M., additional, Chang, C. C., additional, Chen, H. S., additional, Chen, M., additional, Cheng, C. P., additional, Chu, Y. S., additional, Clare, R., additional, Duinker, P., additional, Fang, G. Y., additional, Feng, Z. Y., additional, Fesefeldt, H. S., additional, Fong, D., additional, Fukushima, M., additional, Guo, J. C., additional, Hariri, A., additional, Herten, G., additional, Ho, M. C., additional, Hsu, T. T., additional, Jiang, D. Z., additional, Kadel, R. W., additional, Krenz, W., additional, Li, J., additional, Li, Q. Z., additional, Luckey, D., additional, Luit, E. J., additional, Ma, C. M., additional, Ma, D. A., additional, Massaro, G. G. G., additional, Matsuda, T., additional, Newman, H., additional, Pohl, M., additional, Poschmann, F. P., additional, Revol, J. P., additional, Rohde, M., additional, Rykaczewski, H., additional, Schulz, I., additional, Sinram, K., additional, Steuer, M., additional, Tang, H. W., additional, Tang, L. G., additional, Teuchert, D., additional, Ting, Samuel C. C., additional, Tung, K. L., additional, Vannucci, F., additional, Wang, X. R., additional, Wang, Y. X., additional, Warnock, J., additional, White, M., additional, Wu, G. H., additional, Wu, S. X., additional, Wu, T. W., additional, Yang, P. C., additional, Yu, C. C., additional, Zhang, N. L., additional, and Zhu, R. Y., additional

Published
1980
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43. Test of Universality of Charged Leptons

Author

Barber, D. P., primary, Becker, U., additional, Benda, H., additional, Boehm, A., additional, Branson, J. G., additional, Bron, J., additional, Buikman, D., additional, Burger, J., additional, Chang, C. C., additional, Chen, H. S., additional, Chen, M., additional, Cheng, C. P., additional, Chu, Y. S., additional, Clare, R., additional, Duinker, P., additional, Fang, G. Y., additional, Fesefeldt, H., additional, Fong, D., additional, Fukushima, M., additional, Guo, J. C., additional, Hariri, A., additional, Herten, G., additional, Ho, M. C., additional, Hsu, H. K., additional, Hsu, T. T., additional, Kadel, R. W., additional, Krenz, W., additional, Li, J., additional, Li, Q. Z., additional, Lu, M., additional, Luckey, D., additional, Ma, D. A., additional, Ma, C. M., additional, Massaro, G. G. G., additional, Matsuda, T., additional, Newman, H., additional, Paradiso, J., additional, Poschmann, F. P., additional, Revol, J. P., additional, Rohde, M., additional, Rykaczewski, H., additional, Sinram, K., additional, Tang, H. W., additional, Tang, L. G., additional, Ting, Samuel C. C., additional, Tung, K. L., additional, Vannucci, F., additional, Wang, X. R., additional, Wei, P. S., additional, White, M., additional, Wu, G. H., additional, Wu, T. W., additional, Xi, J. P., additional, Yang, P. C., additional, Yu, X. H., additional, Zhang, N. L., additional, and Zhu, R. Y., additional

Published
1979
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44. Discovery of Three-Jet Events and a Test of Quantum Chromodynamics at PETRA

Author

Barber, D. P., primary, Becker, U., additional, Benda, H., additional, Boehm, A., additional, Branson, J. G., additional, Bron, J., additional, Buikman, D., additional, Burger, J., additional, Chang, C. C., additional, Chen, H. S., additional, Chen, M., additional, Cheng, C. P., additional, Chu, Y. S., additional, Clare, R., additional, Duinker, P., additional, Fang, G. Y., additional, Fesefeldt, H., additional, Fong, D., additional, Fukushima, M., additional, Guo, J. C., additional, Hariri, A., additional, Herten, G., additional, Ho, M. C., additional, Hsu, H. K., additional, Hsu, T. T., additional, Kadel, R. W., additional, Krenz, W., additional, Li, J., additional, Li, Q. Z., additional, Lu, M., additional, Luckey, D., additional, Ma, D. A., additional, Ma, C. M., additional, Massaro, G. G. G., additional, Matsuda, T., additional, Newman, H., additional, Paradiso, J., additional, Poschmann, F. P., additional, Revol, J. P., additional, Rohde, M., additional, Rykaczewski, H., additional, Sinram, K., additional, Tang, H. W., additional, Tang, L. G., additional, Ting, Samuel C. C., additional, Tung, K. L., additional, Vannucci, F., additional, Wang, X. R., additional, Wei, P. S., additional, White, M., additional, Wu, G. H., additional, Wu, T. W., additional, Xi, J. P., additional, Yang, P. C., additional, Yu, X. H., additional, Zhang, N. L., additional, and Zhu, R. Y., additional

Published
1979
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45. A time purified/separated antiproton beam at the AGS

Author

Bachman, M., primary, Barlett, M. L., additional, Bonner, B., additional, Borenstein, S., additional, Bridges, D., additional, Brown, H., additional, Buchanan, J., additional, Clement, J. C., additional, Daftari, I., additional, Debbe, R., additional, Deguzman, A., additional, Fergeson, R. W., additional, Flick, H., additional, Fickinger, W., additional, Gray, L., additional, Hoffman, G. W., additional, Hollas, C. L., additional, Kalogeropoulos, T., additional, Kruk, J., additional, Macasero, A., additional, Marino, R., additional, Mayes, B., additional, Milner, E. C., additional, Moss, R., additional, Mutchler, G. S., additional, Pinsky, L., additional, Riley, P. J., additional, Robinson, D. K., additional, Sakitt, M., additional, Skelly, J., additional, Tang, L. G., additional, Xu, S. W., additional, and Xue, Y., additional

Published
1984
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46. Unique Access to u-Channel Physics: Exclusive Backward-Angle Omega Meson Electroproduction.

Author

Li WB, Huber GM, Blok HP, Gaskell D, Horn T, Semenov-Tian-Shansky K, Pire B, Szymanowski L, Laget JM, Aniol K, Arrington J, Beise EJ, Boeglin W, Brash EJ, Breuer H, Chang CC, Christy ME, Ent R, Gibson EF, Holt RJ, Jin S, Jones MK, Keppel CE, Kim W, King PM, Kovaltchouk V, Liu J, Lolos GJ, Mack DJ, Margaziotis DJ, Markowitz P, Matsumura A, Meekins D, Miyoshi T, Mkrtchyan H, Niculescu I, Okayasu Y, Pentchev L, Perdrisat C, Potterveld D, Punjabi V, Reimer PE, Reinhold J, Roche J, Roos PG, Sarty A, Smith GR, Tadevosyan V, Tang LG, Tvaskis V, Volmer J, Vulcan W, Warren G, Wood SA, Xu C, and Zheng X

Abstract

Backward-angle meson electroproduction above the resonance region, which was previously ignored, is anticipated to offer unique access to the three quark plus sea component of the nucleon wave function. In this Letter, we present the first complete separation of the four electromagnetic structure functions above the resonance region in exclusive ω electroproduction off the proton, ep→e^{'}pω, at central Q^{2} values of 1.60, 2.45  GeV^{2}, at W=2.21  GeV. The results of our pioneering -u≈-u&#95;{min} study demonstrate the existence of a unanticipated backward-angle cross section peak and the feasibility of full L/T/LT/TT separations in this never explored kinematic territory. At Q^{2}=2.45  GeV^{2}, the observed dominance of σ&#95;{T} over σ&#95;{L}, is qualitatively consistent with the collinear QCD description in the near-backward regime, in which the scattering amplitude factorizes into a hard subprocess amplitude and baryon to meson transition distribution amplitudes: universal nonperturbative objects only accessible through backward-angle kinematics.

Published
2019
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47. Transforming growth factor beta1-modified donor cell transfusion induced allo-heart tolerance.

Author

Cheng J, Xia SS, Xie S, Tang LG, and Shi XF

Subjects
Animals, Gene Transfer Techniques, Growth Substances genetics, Heart Transplantation pathology, Immune Tolerance, Lymphocyte Activation, Lymphocyte Culture Test, Mixed, Lymphocyte Transfusion, Models, Animal, Rats, Rats, Inbred WF, Rats, Sprague-Dawley, Spleen cytology, Spleen immunology, T-Lymphocytes immunology, Transforming Growth Factor beta1, Transplantation, Heterologous, Graft Survival physiology, Heart Transplantation immunology, Transforming Growth Factor beta genetics, Transforming Growth Factor beta immunology
Abstract

The therapeutic value of the transforming growth factor beta 1 (TGF-beta1) in transplantation has been reported; however, cell-mediated gene therapy using TGF-beta1 is not a widespread application in organ transplantation. This study was performed to evaluate whether TGF-beta1-modified donor spleen cell-specific transfusion could induce tolerogenicity and prolong allograft survival in rat heterotopic heart transplantation. Stable TGF-beta1-transduced spleen cells were established. Wistar rat splenic T-cell responses to donor spleen cells that received TGF-beta1-transduced were severely impaired. Survival of Sprague-Dawley cardiac allografts in Wistar rats given TGF-beta1-modified donor spleen cells (5 x 10(6), 7 days before transplantation), was extended modestly but significantly. Liposome transduction of donor spleen cells to overexpress TGF-beta1 is associated with marked impairment of their T-cell allostimulatory activity but only modest prolongation of allo-heart survival.

Published
2005
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