Measurements of the separated longitudinal structure function from hydrogen and deuterium targets at low
Abstract
Structure functions, as measured in lepton-nucleon scattering, have proven to be very useful in studying the partonic dynamics within the nucleon. However, it is experimentally difficult to separately determine the longitudinal and transverse structure functions, and consequently there are substantially less data available in particular for the longitudinal structure function. Here, we present separated structure functions for hydrogen and deuterium at low four-momentum transfer squared, Q2<1GeV2, and compare them with parton distribution parametrization and kT factorization approaches. While differences are found, the parametrizations generally agree with the data, even at the very low-Q2 scale of the data. The deuterium data show a smaller longitudinal structure function and a smaller ratio of longitudinal to transverse cross section, R, than the proton. This suggests either an unexpected difference in R for the proton and the neutron or a suppression of the gluonic distribution in nuclei.
- Authors:
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- Hampton Univ., Hampton, VA (United States)
- James Madison Univ., Harrisonburg, VA (United States)
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Rensselaer Polytechnic Inst., Troy, NY (United States)
- North Carolina A&T State Univ., Greensboro, NC (United States)
- Bucharest Univ., Magurele (Romania)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Yerevan Physics Inst. (YerPhI) (Armenia)
- Hampton Univ., Hampton, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- The George Washington Univ., Washington, D.C. (United States)
- Carnegie Mellon Univ., Pittsburgh, PA (United States)
- Vrije Univ., Amsterdam (The Netherlands); Nikhef, Amsterdam (The Netherlands)
- Florida International Univ., University Park, FL (United States)
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Univ. of Massachusetts, Amherst, MA (United States)
- Univ. of Regina, Regina, SK (Canada)
- Univ. of Maryland, College Park, MD (United States)
- Univ. of the Witwatersrand, Johannesburg (South Africa)
- Univ. of Virginia, Charlottesville, VA (United States)
- Univ. of Houston, Houston, TX (United States)
- Mississippi State Univ., Mississippi State, MS (United States)
- Triangle Univ. Nuclear Lab and Duke Univ., Durham, NC (United States)
- California Inst. of Technology (CalTech), Pasadena, CA (United States)
- Univ. of Saskatchewan, Saskatoon, SK (Canada)
- Rutgers, The State Univ. of New Jersey, Piscataway, NJ (United States)
- Univ. of Connecticut, Storrs, CT (United States)
- Univ. of Colorado, Boulder, CO (United States)
- Old Dominion Univ., Norfolk, VA (United States)
- Ohio Univ., Athens, OH (United States)
- Arizona State Univ., Tempe, AZ (United States)
- Gettysburg College, Gettysburg, PA (United States)
- Univ. of Massachusetts, Amherst, MA (United States)
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1435415
- Alternate Identifier(s):
- OSTI ID: 1434826; OSTI ID: 1435971; OSTI ID: 1830323
- Report Number(s):
- JLAB-PHY-16-2295; DOE/OR/23177-3874; arXiv:1606.02614
Journal ID: ISSN 2469-9985; PRVCAN; TRN: US1802336
- Grant/Contract Number:
- AC05-06OR23177; AC02-06CH11357; PHY-0245045; PHY-0555510; PHY-0653440; PHY-1002644; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 97; Journal Issue: 4; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Tvaskis, V., Tvaskis, A., Niculescu, I., Abbott, D., Adams, G. S., Afanasev, A., Ahmidouch, A., Angelescu, T., Arrington, J., Asaturyan, R., Avery, S., Baker, O. K., Benmouna, N., Berman, B. L., Biselli, A., Blok, H. P., Boeglin, W. U., Bosted, P. E., Brash, E., Breuer, H., Chang, G., Chant, N., Christy, M. E., Connell, S. H., Dalton, M. M., Danagoulian, S., Day, D., Dodario, T., Dunne, J. A., Dutta, D., El Khayari, N., Ent, R., Fenker, H. C., Frolov, V. V., Gaskell, D., Garrow, K., Gilman, R., Gueye, P., Hafidi, K., Hinton, W., Holt, R. J., Horn, T., Huber, G. M., Jackson, H., Jiang, X., Jones, M. K., Joo, K., Kelly, J. J., Keppel, C. E., Kuhn, J., Kinney, E., Klein, A., Kubarovsky, V., Liang, Y., Lolos, G., Lung, A., Mack, D., Malace, S., Markowitz, P., Mbianda, G., McGrath, E., Mckee, D., Meekins, D. G., Mkrtchyan, H., Napolitano, J., Navasardyan, T., Niculescu, G., Nozar, M., Ostapenko, T., Papandreou, Z., Potterveld, D., Reimer, P. E., Reinhold, J., Roche, J., Rock, S. E., Schulte, E., Segbefia, E., Smith, C., Smith, G. R., Stoler, P., Tadevosyan, V., Tang, L., Telfeyan, J., Todor, L., Ungaro, M., Uzzle, A., Vidakovic, S., Villano, A., Vulcan, W. F., Warren, G., Wesselmann, F., Wojtsekhowski, B., Wood, S. A., Yan, C., and Zihlmann, B. Measurements of the separated longitudinal structure function FL from hydrogen and deuterium targets at low Q2. United States: N. p., 2018.
Web. doi:10.1103/PhysRevC.97.045204.
Tvaskis, V., Tvaskis, A., Niculescu, I., Abbott, D., Adams, G. S., Afanasev, A., Ahmidouch, A., Angelescu, T., Arrington, J., Asaturyan, R., Avery, S., Baker, O. K., Benmouna, N., Berman, B. L., Biselli, A., Blok, H. P., Boeglin, W. U., Bosted, P. E., Brash, E., Breuer, H., Chang, G., Chant, N., Christy, M. E., Connell, S. H., Dalton, M. M., Danagoulian, S., Day, D., Dodario, T., Dunne, J. A., Dutta, D., El Khayari, N., Ent, R., Fenker, H. C., Frolov, V. V., Gaskell, D., Garrow, K., Gilman, R., Gueye, P., Hafidi, K., Hinton, W., Holt, R. J., Horn, T., Huber, G. M., Jackson, H., Jiang, X., Jones, M. K., Joo, K., Kelly, J. J., Keppel, C. E., Kuhn, J., Kinney, E., Klein, A., Kubarovsky, V., Liang, Y., Lolos, G., Lung, A., Mack, D., Malace, S., Markowitz, P., Mbianda, G., McGrath, E., Mckee, D., Meekins, D. G., Mkrtchyan, H., Napolitano, J., Navasardyan, T., Niculescu, G., Nozar, M., Ostapenko, T., Papandreou, Z., Potterveld, D., Reimer, P. E., Reinhold, J., Roche, J., Rock, S. E., Schulte, E., Segbefia, E., Smith, C., Smith, G. R., Stoler, P., Tadevosyan, V., Tang, L., Telfeyan, J., Todor, L., Ungaro, M., Uzzle, A., Vidakovic, S., Villano, A., Vulcan, W. F., Warren, G., Wesselmann, F., Wojtsekhowski, B., Wood, S. A., Yan, C., & Zihlmann, B. Measurements of the separated longitudinal structure function FL from hydrogen and deuterium targets at low Q2. United States. https://doi.org/10.1103/PhysRevC.97.045204
Tvaskis, V., Tvaskis, A., Niculescu, I., Abbott, D., Adams, G. S., Afanasev, A., Ahmidouch, A., Angelescu, T., Arrington, J., Asaturyan, R., Avery, S., Baker, O. K., Benmouna, N., Berman, B. L., Biselli, A., Blok, H. P., Boeglin, W. U., Bosted, P. E., Brash, E., Breuer, H., Chang, G., Chant, N., Christy, M. E., Connell, S. H., Dalton, M. M., Danagoulian, S., Day, D., Dodario, T., Dunne, J. A., Dutta, D., El Khayari, N., Ent, R., Fenker, H. C., Frolov, V. V., Gaskell, D., Garrow, K., Gilman, R., Gueye, P., Hafidi, K., Hinton, W., Holt, R. J., Horn, T., Huber, G. M., Jackson, H., Jiang, X., Jones, M. K., Joo, K., Kelly, J. J., Keppel, C. E., Kuhn, J., Kinney, E., Klein, A., Kubarovsky, V., Liang, Y., Lolos, G., Lung, A., Mack, D., Malace, S., Markowitz, P., Mbianda, G., McGrath, E., Mckee, D., Meekins, D. G., Mkrtchyan, H., Napolitano, J., Navasardyan, T., Niculescu, G., Nozar, M., Ostapenko, T., Papandreou, Z., Potterveld, D., Reimer, P. E., Reinhold, J., Roche, J., Rock, S. E., Schulte, E., Segbefia, E., Smith, C., Smith, G. R., Stoler, P., Tadevosyan, V., Tang, L., Telfeyan, J., Todor, L., Ungaro, M., Uzzle, A., Vidakovic, S., Villano, A., Vulcan, W. F., Warren, G., Wesselmann, F., Wojtsekhowski, B., Wood, S. A., Yan, C., and Zihlmann, B. Thu .
"Measurements of the separated longitudinal structure function FL from hydrogen and deuterium targets at low Q2". United States. https://doi.org/10.1103/PhysRevC.97.045204. https://www.osti.gov/servlets/purl/1435415.
@article{osti_1435415,
title = {Measurements of the separated longitudinal structure function FL from hydrogen and deuterium targets at low Q2},
author = {Tvaskis, V. and Tvaskis, A. and Niculescu, I. and Abbott, D. and Adams, G. S. and Afanasev, A. and Ahmidouch, A. and Angelescu, T. and Arrington, J. and Asaturyan, R. and Avery, S. and Baker, O. K. and Benmouna, N. and Berman, B. L. and Biselli, A. and Blok, H. P. and Boeglin, W. U. and Bosted, P. E. and Brash, E. and Breuer, H. and Chang, G. and Chant, N. and Christy, M. E. and Connell, S. H. and Dalton, M. M. and Danagoulian, S. and Day, D. and Dodario, T. and Dunne, J. A. and Dutta, D. and El Khayari, N. and Ent, R. and Fenker, H. C. and Frolov, V. V. and Gaskell, D. and Garrow, K. and Gilman, R. and Gueye, P. and Hafidi, K. and Hinton, W. and Holt, R. J. and Horn, T. and Huber, G. M. and Jackson, H. and Jiang, X. and Jones, M. K. and Joo, K. and Kelly, J. J. and Keppel, C. E. and Kuhn, J. and Kinney, E. and Klein, A. and Kubarovsky, V. and Liang, Y. and Lolos, G. and Lung, A. and Mack, D. and Malace, S. and Markowitz, P. and Mbianda, G. and McGrath, E. and Mckee, D. and Meekins, D. G. and Mkrtchyan, H. and Napolitano, J. and Navasardyan, T. and Niculescu, G. and Nozar, M. and Ostapenko, T. and Papandreou, Z. and Potterveld, D. and Reimer, P. E. and Reinhold, J. and Roche, J. and Rock, S. E. and Schulte, E. and Segbefia, E. and Smith, C. and Smith, G. R. and Stoler, P. and Tadevosyan, V. and Tang, L. and Telfeyan, J. and Todor, L. and Ungaro, M. and Uzzle, A. and Vidakovic, S. and Villano, A. and Vulcan, W. F. and Warren, G. and Wesselmann, F. and Wojtsekhowski, B. and Wood, S. A. and Yan, C. and Zihlmann, B.},
abstractNote = {Structure functions, as measured in lepton-nucleon scattering, have proven to be very useful in studying the partonic dynamics within the nucleon. However, it is experimentally difficult to separately determine the longitudinal and transverse structure functions, and consequently there are substantially less data available in particular for the longitudinal structure function. Here, we present separated structure functions for hydrogen and deuterium at low four-momentum transfer squared, Q2<1GeV2, and compare them with parton distribution parametrization and kT factorization approaches. While differences are found, the parametrizations generally agree with the data, even at the very low-Q2 scale of the data. The deuterium data show a smaller longitudinal structure function and a smaller ratio of longitudinal to transverse cross section, R, than the proton. This suggests either an unexpected difference in R for the proton and the neutron or a suppression of the gluonic distribution in nuclei.},
doi = {10.1103/PhysRevC.97.045204},
journal = {Physical Review C},
number = 4,
volume = 97,
place = {United States},
year = {Thu Apr 26 00:00:00 EDT 2018},
month = {Thu Apr 26 00:00:00 EDT 2018}
}
Web of Science
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