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Behavior of high energy elastic scattering and total cross sections for pi+/- p, k+/- p, pp and p - anti-p

Description: It is proposed to extend to the NAL energy range the investigation of elastic ''diffraction'' scattering and precision measurements of the total cross sections performed at BNL during the past decade. It is expected that this investigation will be of considerable interest and importance in regard to understanding the asymptotic behavior of forward and near forward scattering amplitudes. The investigation will be composed of two highly complementary parts, which in common utilize the same beam, most of the same equipment, and the same experimental area region. As our past experience has demonstrated, a knowledge of both the elastic ''diffraction'' scattering and the total cross sections to high precision is necessary to allow a meaningful theoretical analysis of either.
Date: June 1, 1970
Creator: Foley, K.J.; Love, W.A.; Lindenbaum, S.J.; Ozaki, S.; Platner, E.D.; Saulys, A.C. et al.
Partner: UNT Libraries Government Documents Department

A proposal to measure polarization in pp, pi- p and pi+ p elastic scattering at 50, 100, and 150 GeV/c at the National Accelerator Laboratory

Description: The authors propose to measure the polarization parameter in pp, {pi}{sup -}p, and {pi}{sup +}p scattering at incident momenta of 50, 100, and 150 GeV/c over the range 0.15 {le} -t {le} 1.5 (GeV/c){sup 2}. The apparatus consists of a polarized proton target, two spectrometer arms which determine the angles and momenta of both outgoing particles, and an on-line computer. The detectors are designed to operate at incident beam rates of up to 10{sup 8} beam particles/pulse. They anticipate an error in the polarization parameter P of .005 {le} {Delta}P {le} .01 over the range .15 {le} -t {le} .8 (GeV/c){sup 2} in 100 shifts of data taking and background studies.
Date: June 1, 1970
Creator: Hill, D.; Koehler, P.; Novey, T. B.; Yokosawa, A.; Spinka, H.; Brown, C. et al.
Partner: UNT Libraries Government Documents Department

Rare K sup + decays in flight: Latest results and future plans

Description: E777 at the Brookhaven AGS has published a final branching ratio limit for the lepton family violating decay K{sup +} {yields} {pi}{sup +}{mu}{sup +}e{sup {minus}} of 2.1 {times} 10{sup {minus}10} (90% C.L.). New results based on approximately 500 events of the G.I. M. suppressed decay K{sup +} {yields} {pi}{sup +}e{sup +}e{sup {minus}} have yielded a branching ratio of (2.75 {plus minus} 0.23 {plus minus} 0.13) {times} 10{sup {minus}7} assuming a vector interaction with, a form factor = 0.105 {plus minus} 0.035 {plus minus} 0.015. The branching ratio times decay probability for K{sup 0} {yields} {pi}{sup +} X{sup 0}, ,{sup 0} {yields} e{sup +}e{sup {minus}} was found to less than 1.5 {times} 10{sup {minus}8} (99% C.L.) in the e{sup +}e{sup {minus}} invariant mass range of 150 to 340 MeV/c. An approved second generation experiment sensitive to K{sup +} {yields} {mu}{sup +}e{sup {minus}} at the 10{sup {minus}12} level is discussed. 5 refs., 3 figs.
Date: January 1, 1991
Creator: Alliegro, C.; Zeller, M.E. (Yale Univ., New Haven, CT (United States)); Campagnari, C. (Chicago Univ., IL (United States)); Chaloupka, V.; Lubatti, H.J.; Zhao, T. (Washington Univ., Seattle, WA (United States)) et al.
Partner: UNT Libraries Government Documents Department