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Title: Beam-recoil polarization transfer in the nucleon resonance region in the exclusive e-vectorp{yields}e{sup '}K{sup +}{lambda}-vector and e-vectorp{yields}e{sup '}K{sup +}{sigma}-vector{sup 0} reactions at the CLAS spectrometer

Abstract

Beam-recoil transferred polarizations for the exclusive e-vectorp{yields}e{sup '}K{sup +}{lambda}-vector,{sigma}-vector{sup 0} reactions have been measured using the Continuous Electron Beam Accelerator Facility's large acceptance spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility. New measurements have been completed at beam energies of 4.261 and 5.754 GeV that span a range of momentum transfer Q{sup 2} from 0.7 to 5.4 GeV{sup 2}, invariant energy W from 1.6 to 2.6 GeV, and the full center-of-mass angular range of the K{sup +} meson. These new data add to the existing CLAS K{sup +}{lambda} measurements at 2.567 GeV, and provide the first-ever data for the K{sup +}{sigma}{sup 0} channel in electroproduction. Comparisons of the data with several theoretical models are used to study the sensitivity to s-channel resonance contributions and the underlying reaction mechanism. Interpretations within two semiclassical partonic models are made to probe the underlying reaction mechanism and the ss quark-pair creation dynamics.

Authors:
; ; ; ; ; ; ;  [1]; ; ; ; ; ;  [2]; ; ; ; ; ;  [3]
  1. Thomas Jefferson National Accelerator Laboratory, Newport News, Virginia 23606 (United States)
  2. Florida International University, Miami, Florida 33199 (United States)
  3. Old Dominion University, Norfolk, Virginia 23529 (United States)
Publication Date:
OSTI Identifier:
21293756
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 79; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.79.065205; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCELERATOR FACILITIES; CENTER-OF-MASS SYSTEM; COMPARATIVE EVALUATIONS; ELECTRON BEAMS; ELECTROPRODUCTION; GEV RANGE 01-10; KAONS PLUS; LAMBDA PARTICLES; MOMENTUM TRANSFER; PAIR PRODUCTION; POLARIZATION; QUARKS; REACTION KINETICS; S CHANNEL; SEMICLASSICAL APPROXIMATION; SIGMA NEUTRAL PARTICLES; SIGMA PARTICLES; SPECTROMETERS

Citation Formats

Carman, D S, Burkert, V D, Deur, A, Girod, F X, Kubarovsky, V, Sharabian, Y G, Stepanyan, S, Wolin, E, Raue, B A, Dhamija, S, Gabrielyan, M Y, Gonenc, A, Moteabbed, M, Schott, D, Adhikari, K P, Amaryan, M J, Dodge, G E, Mayer, M, Niroula, M R, and Seraydaryan, H. Beam-recoil polarization transfer in the nucleon resonance region in the exclusive e-vectorp{yields}e{sup '}K{sup +}{lambda}-vector and e-vectorp{yields}e{sup '}K{sup +}{sigma}-vector{sup 0} reactions at the CLAS spectrometer. United States: N. p., 2009. Web. doi:10.1103/PHYSREVC.79.065205.
Carman, D S, Burkert, V D, Deur, A, Girod, F X, Kubarovsky, V, Sharabian, Y G, Stepanyan, S, Wolin, E, Raue, B A, Dhamija, S, Gabrielyan, M Y, Gonenc, A, Moteabbed, M, Schott, D, Adhikari, K P, Amaryan, M J, Dodge, G E, Mayer, M, Niroula, M R, & Seraydaryan, H. Beam-recoil polarization transfer in the nucleon resonance region in the exclusive e-vectorp{yields}e{sup '}K{sup +}{lambda}-vector and e-vectorp{yields}e{sup '}K{sup +}{sigma}-vector{sup 0} reactions at the CLAS spectrometer. United States. https://doi.org/10.1103/PHYSREVC.79.065205
Carman, D S, Burkert, V D, Deur, A, Girod, F X, Kubarovsky, V, Sharabian, Y G, Stepanyan, S, Wolin, E, Raue, B A, Dhamija, S, Gabrielyan, M Y, Gonenc, A, Moteabbed, M, Schott, D, Adhikari, K P, Amaryan, M J, Dodge, G E, Mayer, M, Niroula, M R, and Seraydaryan, H. 2009. "Beam-recoil polarization transfer in the nucleon resonance region in the exclusive e-vectorp{yields}e{sup '}K{sup +}{lambda}-vector and e-vectorp{yields}e{sup '}K{sup +}{sigma}-vector{sup 0} reactions at the CLAS spectrometer". United States. https://doi.org/10.1103/PHYSREVC.79.065205.
@article{osti_21293756,
title = {Beam-recoil polarization transfer in the nucleon resonance region in the exclusive e-vectorp{yields}e{sup '}K{sup +}{lambda}-vector and e-vectorp{yields}e{sup '}K{sup +}{sigma}-vector{sup 0} reactions at the CLAS spectrometer},
author = {Carman, D S and Burkert, V D and Deur, A and Girod, F X and Kubarovsky, V and Sharabian, Y G and Stepanyan, S and Wolin, E and Raue, B A and Dhamija, S and Gabrielyan, M Y and Gonenc, A and Moteabbed, M and Schott, D and Adhikari, K P and Amaryan, M J and Dodge, G E and Mayer, M and Niroula, M R and Seraydaryan, H},
abstractNote = {Beam-recoil transferred polarizations for the exclusive e-vectorp{yields}e{sup '}K{sup +}{lambda}-vector,{sigma}-vector{sup 0} reactions have been measured using the Continuous Electron Beam Accelerator Facility's large acceptance spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility. New measurements have been completed at beam energies of 4.261 and 5.754 GeV that span a range of momentum transfer Q{sup 2} from 0.7 to 5.4 GeV{sup 2}, invariant energy W from 1.6 to 2.6 GeV, and the full center-of-mass angular range of the K{sup +} meson. These new data add to the existing CLAS K{sup +}{lambda} measurements at 2.567 GeV, and provide the first-ever data for the K{sup +}{sigma}{sup 0} channel in electroproduction. Comparisons of the data with several theoretical models are used to study the sensitivity to s-channel resonance contributions and the underlying reaction mechanism. Interpretations within two semiclassical partonic models are made to probe the underlying reaction mechanism and the ss quark-pair creation dynamics.},
doi = {10.1103/PHYSREVC.79.065205},
url = {https://www.osti.gov/biblio/21293756}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 6,
volume = 79,
place = {United States},
year = {Mon Jun 15 00:00:00 EDT 2009},
month = {Mon Jun 15 00:00:00 EDT 2009}
}