Asymmetry Measurements for Elastic Scattering of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>Mesons by Polarized Protons

Ehrlich, R.; Etkin, A.; Glodis, P.F.; Hughes, V. W.; Kondo, K.; Lu, D. C.; Mori, Shigeo; Patton, R.; Rebka, G. A.; Rothberg, J.; Thompson, P.; Zeller, M.

doi:10.1103/physrevlett.26.925

Cited by 25 publications

(7 citation statements)

References 27 publications

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“…Much of these data are available from compilations [30,31,32] but we try to give references to the original data as much as possible [33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53].…”

Section: Fitting Proceduresmentioning

confidence: 99%

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Partial-wave analysis ofK+-nucleon scattering

Gibbs

Arceo

2007

Phys. Rev. C

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We have performed a partial-wave analysis of K + -nucleon scattering in the momentum range from 0 to 1.5 GeV/c addressing the uncertainties of the results and comparing them with several previous analyses. It is found that the treatment of the reaction threshold behavior is particularly important. We find a T=0 scattering length which is not consistent with zero, as has been claimed by other analyses. The T=0 phase shifts for ℓ > 0 are consistent with a pure spin-orbit potential. Some indications for the production of a T=0 pentaquark with spin-parity D5/2+ are discussed.

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Section: Fitting Proceduresmentioning

confidence: 99%

“…The errors were doubled on the polarization set at 1.430 GeV/c [33] since the variation from point to point is greater than the errors quoted. Partial waves through F7/2 were considered.…”

Section: Fitting Proceduresmentioning

confidence: 99%

Partial-wave analysis ofK+-nucleon scattering

Gibbs

Arceo

2007

Phys. Rev. C

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“…8 The experimental apparatus was essentially unchanged with the exception of the beam particle identification counters. A Cherenkov counter with a glycerin-water mixture as a >-<r I- CO …”

Section: A = Dg/dqfi + Da/dandamentioning

confidence: 99%

“…8 The experimental apparatus was essentially unchanged with the exception of the beam particle identification counters. A Cherenkov counter with a glycerin-water mixture as a radiator positively identified the antiprotons in the beam, 9 while a high-pressure ethylene-filled differential Cherenkov counter was used to veto residual pion contamination.…”

Section: A = Dg/dqfi + Da/dandamentioning

confidence: 99%

Measurements of the Asymmetries in the Differential Cross Sections forp¯p→p¯pand
Ehrlich
¹
,
Etkin
²
,
Glodis
³

et al. 1972
Phys. Rev. Lett.
Self Cite
16
0
0
0
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We report measured asymmetries as a function of polar scattering angle for the reactions pp-~ir~Tr + tmd'pp-*pp 9 using a polarized proton target. The annihilation data, obtained at a J momentum of 1.64 GeV/c, are the first asymmetry data to be collected for this channel. A fit of these data and published differential cross section data is made by a partial-wave expansion, and the results are compared with a previous analysis. The elastic scattering data, obtained at 1.64 and 2.55 GeV/c, are fitted with an eight-parameter strong-absorption model.Using antiprotons incident on a lanthanum-magnesium-nit rate-type polarized proton target, 1 we have studied the reactions pp-+ir~ir + and pp -*PP-Specifically, we have measured the asymmetry in the differential cross sections for these reactions between proton polarization normal to, and antinormal to, the scattering plane, 2 A = dG/dQfi + da/d&aOur annihilation data were obtained with an incident p momentum of 1.64 GeV/c and provide the first asymmetry measurements for this reaction. Previous studies of the reaction/>/> ^ir~7r + in this momentum range have been measurements of the differential cross sections in two low-statistics bubble-chamber experiments, 3 measurements of do/d£2 for \cosO ir -c ' m '\ ^ 0.96 in a counter experiment, 4 and measurements of the folded differential cross sections in two counter experiments, 4,5 where only Icos^f 00 " 1 *! was determined. A partial-wave analysis, 4 performed using the counter data, showed a possible boson resonance with angular momentum J-5 and mass vn R -2.29 GeV (P lab = 1.60 GeV/c). This analysis, which was limited by the lack of complete angular distributions, was dominated by resonant J= 3 and J= 5 partial waves while J= 1, 2, and 3 partial waves were included as background.Our elastic-scattering data were obtained at beam momenta of 1.64 and 2.55 GeV/c and complement published results of asymmetry measurements. 6 In analyzing these data we have used a diffraction model 6 with eight parameters and, in contrast to earlier analyses, have included totalcross-section measurements 7 in the fits.The experiment was performed at the Brookhaven National Laboratory alternating gradient synchrotron in conjunction with a previously reported K + p elastic-scattering asymmetry measurement. 8 The experimental apparatus was essentially unchanged with the exception of the beam particle identification counters. A Cherenkov counter with a glycerin-water mixture as a >-

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“…Accordingly, for each J p partial wave, we define the 2x2 real, symmetric K . (15) Focardl (16) Giacomelli Bugg, Cool (18) Martin ( ' 19) CERN (21) …”

Section: Resonance Pole With J P = - § + In a Coupled-channel Analysimentioning

confidence: 99%

Resonance Pole withJP=32+in a Coupled-Channel Analysis of
Arndt
¹
,
Hackman
²
,
Roper
³

et al. 1974
Phys. Rev. Lett.

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Asymmetry Measurements for Elastic Scattering ofK+Mesons by Polarized Protons

Cited by 25 publications

References 27 publications

Partial-wave analysis ofK+-nucleon scattering

Partial-wave analysis ofK+-nucleon scattering

Measurements of the Asymmetries in the Differential Cross Sections forp¯p→p¯pand
Ehrlich
¹
,
Etkin
²
,
Glodis
³

et al. 1972
Phys. Rev. Lett.
Self Cite
16
0
0
0
View full text Add to dashboard Cite

Resonance Pole withJP=32+in a Coupled-Channel Analysis of
Arndt
¹
,
Hackman
²
,
Roper
³

et al. 1974
Phys. Rev. Lett.

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Asymmetry Measurements for Elastic Scattering ofK+Mesons by Polarized Protons

Cited by 25 publications

References 27 publications

Partial-wave analysis ofK+-nucleon scattering

Partial-wave analysis ofK+-nucleon scattering

Measurements of the Asymmetries in the Differential Cross Sections forp¯p→p¯pandEhrlich1, Etkin2, Glodis3 et al. 1972Phys. Rev. Lett.Self Cite16000View full textAdd to dashboardCite

Resonance Pole withJP=32+in a Coupled-Channel Analysis ofArndt1, Hackman2, Roper3 et al. 1974Phys. Rev. Lett.

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Measurements of the Asymmetries in the Differential Cross Sections forp¯p→p¯pand
Ehrlich
¹
,
Etkin
²
,
Glodis
³

et al. 1972
Phys. Rev. Lett.
Self Cite
16
0
0
0
View full text Add to dashboard Cite

Resonance Pole withJP=32+in a Coupled-Channel Analysis of
Arndt
¹
,
Hackman
²
,
Roper
³

et al. 1974
Phys. Rev. Lett.