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Publication Information
| Title | Separated Response Functions in Exclusive, Forward pi± Electroproduction on Deuterium | ||||
| Abstract | Background: Measurements of forward exclusive meson production at different squared four-momenta of the exchanged virtual photon, Q2, 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 ?? and ?+ 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 Q2 values of 0.6, 1.0, 1.6 GeV2 at W=1.95 GeV, and Q2=2.45 GeV2 at W=2.22 GeV. There was significant coverage in ? and ?, which allowed separation of ?L,T,LT,TT. Results: ?L sh | ||||
| Author(s) | Garth Huber, Henk Blok, Cornel Butuceanu, Dave Gaskell, Tanja Horn, Dave Mack, David Abbott, Konrad Aniol, Heinz Anklin, Chris Armstrong, John Arrington, Ketevi Assamagan, Steven Avery, Oliver Baker, Brynle Barrett, Elizabeth Beise, Chris Bochna, Werner Boeglin, Ed Brash, Herbert Breuer, George Chang, Nicholas Chant, Eric Christy, Jim Dunne, T. Eden, Rolf Ent, Howard Fenker, E. Gibson, Ronald Gilman, Kenneth Gustafsson, Wendy Hinton, Roy Holt, Hal Jackson, S. Jin, Mark Kevin Jones, Cynthia (Thia) Keppel, Pyunghun Kim, Wooyoung Kim, Paul King, Andi Klein, Doug Koltenuk, Vitali Kovaltchouk, M. Liang, Jianglai Liu, George Lolos, Allison Lung, Dimitri Margaziotis, Pete Markowitz, Akihiko Matsumura, Christi Mckee, Dave Meekins, J. Mitchell, Toshinobu Miyoshi, Hamlet Mkrtchyan, Berndt Mueller, Gabriel Niculescu, Maria Niculescu, Yuichi Okayasu, Lubomir Pentchev, Charles Perdrisat, David Pitz, Dave Potterveld, Vina Punjabi, Liming Qin, Paul Reimer, Joerg Reinhold, Julie Roche, Philip Roos, Adam Sarty, Ilkyoung Shin, Greg Smith, Stepan Stepanyan, Liguang Tang, Vardan Tadevosyan, Vladas Tvaskis, Rob van der Meer, Kelley Vansyoc, Derek Van Westrum, Sandra Vidakovic, Jochen Volmer, William Vulcan, Glen Warren, Stephen Wood, C. Xu, Chen Yan, Wenxia Zhao, Xiaochao Zheng, Benedikt Zihlmann | ||||
| Publication Date | January 2015 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Exp Nuclear Physics / Experimental Halls / Hall C | ||||
| Funding Source | |||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | Yes | ||||
| Experiment Number(s) |
E93-021
E01-004
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| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physical Review C |
| Refereed | Yes |
| Volume | 91 |
| Issue | 01 |
| Page(s) | 015202 |
Attachments/Datasets/DOI Link
| Document(s) |
1412.5140v1.pdf
(STI Document)
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| DOI Link | |
| Dataset(s) | (none) |
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