Experiment to measure total cross sections, differential cross sections and polarization effects in pp elastic scattering at RHIC

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The authors are describing an experiment to study proton-proton (pp) elastic scattering experiment at the Relativistic Heavy Ion Collider (RHIC). Using both polarized and unpolarized beams, the experiment will study pp elastic scattering from {radical}s = 50 GeV to {radical}s = 500 GeV in two kinematical regions. In the Coulomb Nuclear Interference (CNI) region, 0.0005 < {vert_bar}t{vert_bar} < 0.12 (GeV/c){sup 2}, they will measure and study the s dependence of the total and elastic cross sections, {sigma}{sub tot} and {sigma}{sub el}; the ratio of the real to the imaginary part of the forward elastic scattering amplitude, {rho}; and the nuclear ... continued below

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13 p.

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Guryn, W. February 1, 1998.

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Description

The authors are describing an experiment to study proton-proton (pp) elastic scattering experiment at the Relativistic Heavy Ion Collider (RHIC). Using both polarized and unpolarized beams, the experiment will study pp elastic scattering from {radical}s = 50 GeV to {radical}s = 500 GeV in two kinematical regions. In the Coulomb Nuclear Interference (CNI) region, 0.0005 < {vert_bar}t{vert_bar} < 0.12 (GeV/c){sup 2}, they will measure and study the s dependence of the total and elastic cross sections, {sigma}{sub tot} and {sigma}{sub el}; the ratio of the real to the imaginary part of the forward elastic scattering amplitude, {rho}; and the nuclear slope parameter of the pp elastic scattering, b. In the medium {vert_bar}t{vert_bar}-region, {vert_bar}t{vert_bar} < 1.5 (GeV/c){sup 2}, they plan to study the evolution of the dip structure with s, as observed at ISR in the differential elastic cross section, d{sigma}{sub el}/dt, and the s and {vert_bar}t{vert_bar} dependence of b. With the polarized beams the following can be measured: the difference in the total cross sections as function of initial transverse spin states {Delta}{sigma}{sub T}, the analyzing power, A{sub N}, and the transverse spin correlation parameter A{sub NN}. The behavior of the analyzing power A{sub N} at RHIC energies in the dip region of d{sigma}{sub el}/dt, where a pronounced structure was found at fixed-target experiments will be studied. The relation of pp elastic scattering to the beam polarization measurement at RHIC is also discussed.

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13 p.

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INIS; OSTI as DE98004439

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  • International workshop on non-accelerator new physics, Dubna (Russian Federation), 7-11 Jul 1997

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  • Other: DE98004439
  • Report No.: BNL--65268
  • Report No.: CONF-970756--
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 654110
  • Archival Resource Key: ark:/67531/metadc706655

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • February 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 9, 2015, 12:03 p.m.

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Guryn, W. Experiment to measure total cross sections, differential cross sections and polarization effects in pp elastic scattering at RHIC, article, February 1, 1998; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc706655/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.