Spin-transfer measurements of the {pi}{rvec d}{r_arrow}{rvec p}p reaction at energies spanning the {Delta} resonance

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.55.19· OSTI ID:434309

Feltham, A ^[1]; Jones, G; Olszewski, R; Pavan, M; Sevior, M; Trelle, R P; Weber, P ^[1]; Lolos, G J; Mathie, E L; Papandreou, Z ^[2]; Rui, R ^[3]; Gill, D; Healey, D; Ottewell, D; Sheffer, G; Smith, G R; Sossi, V; Wait, G; Walden, P ^[4]

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1. Department of Physics, University of British Columbia, Vancouver, British Columbia, V6T 1Z1 (CANADA)
2. Department of Physics, University of Regina, Regina, Saskatchewan, S4S 0A2 (CANADA)
3. Dipartimento di Fisica, Universita di Trieste, 34127 Trieste (Italy)
4. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (CANADA)

The first spin-transfer experiment performed for the {pi}{rvec d}{r_arrow}{rvec p}p reaction is described. Three spin-transfer parameters for this {pi}-absorption process were determined, K{sub LS}{sup a}, K{sub SS}{sup a}, and K{sub NN}{sup a}, which correspond to the {pi}-production parameters, K{sub SL}{sup p}, K{sub SS}{sup p}, and K{sub NN}{sup p}, of the time-reversed {rvec p}p{r_arrow}{rvec d}{pi} process. Each observable was measured at a single angle for a number of energies spanning the {Delta} resonance of this system. The results are compared with the predictions of published partial wave amplitude fits which are primarily based on existing data for the time-reversed pp{r_arrow}d{pi} reaction, and also with the predictions of two current theories. The failure of these theories to describe the fundamental features of the data clearly demonstrates the need for further theoretical work in this area. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 434309
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 1 Vol. 55; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ABSORPTION
DELTA BARYONS
KAONS
PARTIAL WAVES
PION-NEUTRON INTERACTIONS
PION-PROTON INTERACTIONS
POLARIZED TARGETS
SCATTERING AMPLITUDES
SPIN
TRANSFER REACTIONS