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Title: Longitudinal and Transverse Cross Sections in the {sup 1}H ({ital e},thinspthinsp {ital e}{sup {prime}}{ital K}{sup +}){Lambda} Reaction

Journal Article · · Physical Review Letters
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  1. Hampton University, Hampton, Virginia 23668 (United States)
  2. University of Maryland, College Park, Maryland 20742 (United States)
  3. Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606 (United States)
  4. Kent State University, Kent, Ohio 44242 (United States)
  5. Yerevan Physics Institute, Yerevan, (Armenia) 375306
  6. Temple University, Philadelphia, Pennsylvania 19122 (United States)
  7. Bucharest University, Bucharest, (Romania) R76900
  8. College of William and Mary, Williamsburg, Virginia 23187 (United States)
  9. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  10. North Carolina A T State University, Greensboro, North Carolina 27411 (United States)
  11. Free University, Amsterdam, (The Netherlands) 1081
  12. Physics Laboratory, Istituto Superiore di Sanita and INFN-Sezione Sanita, Rome, (Italy) I-00161
  13. Northwestern University, Evanston, Illinois 60201 (United States)
  14. ISN, Grenoble, (France)
+ Show Author Affiliations

The {sup 1}H( e,thinspe{sup {prime}}K{sup +}){Lambda} reaction was studied as a function of the squared four-momentum transfer, Q{sup 2} , and the virtual photon polarization, {var_epsilon} . For each of four Q{sup 2} settings, 0.52, 0.75, 1.00, and 2.00 (GeV/c){sup 2} , the longitudinal and transverse virtual photon cross sections were extracted in measurements at three virtual photon polarizations. The Q{sup 2} dependence of the {sigma}{sub L}/{sigma}{sub T} ratio differs significantly from current theoretical predictions. This, combined with the precision of the measurement, implies a need for revision of existing calculations. {copyright} {ital 1998} {ital The American Physical Society }

OSTI ID:
303882
Journal Information:
Physical Review Letters, Vol. 81, Issue 9; Other Information: PBD: Aug 1998
Country of Publication:
United States
Language:
English

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Related Subjects

66 PHYSICS
ELECTRON-PROTON INTERACTIONS
ELECTROPRODUCTION
POLARIZATION
FOUR MOMENTUM TRANSFER
ELECTRON BEAMS
CROSS SECTIONS