Naslov
Spin-rotation parameters A and R for Pi+p and Pi-p elastic scattering from 427 to 657 MeV/c

Autori
Supek, Ivan ; Barlow, D.B. ; Briscoe, W.J. ; Davis, J.F. ; Kim, G.J. ; Lane, D.W., Mokhtari, A. ; Nefkens, B.M.K. ; Pillai, C. ; Sadler, M.E. ; Seftor, C.J. ; Taragin, M.F. ; Wightman, J.A.

Izvornik
Physical review. D, Particles and fields (0556-2821) 47 (1993), 5; 1762-1775

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
PiN scattering ; spin-rotation parameters A and R ; LAMPF

Sažetak
The spin-rotation parameters A and R and the related spin-rotation nagle beta ave been measured for Pi^+p and Pi^-p elastic scattering using protons polarized in the scattering plane. The pion-beam momenta are 427, 471, 547, 625, and 657 MeV/c and the angular is -0.9<cosO_c.m.<0.3. The scattered pion and recoul proton were detected in coincidence, using a scintillator hodoscope for the pions, and the Large Acceptance Spectrometer combined with the JANUS polarimeter for the recoil protons. The results are compared with the four recent PiN partial wave analyses (PWA's). Our data show that the major features of these PWA's are correct. The A and R measurements complete our program of ion-nucleon experiments, providing full data sets at three of the above beam momenta. Such sets can be used to test the constraints in the PWA's or to obtain a model-independent set of PiN scattering amplitudes.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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