High-precision measurement of the analyzing power in large-P2 spin-polarized 24-GeV/c proton-proton elastic scattering

D. G. Crabb; W. A. Kaufman; A. D. Krisch; A. M.T. Lin; D. C. Peaslee; R. A. Phelps; R. S. Raymond; T. Roser; J. A. Stewart; B. S. Van Guilder; B. Vuaridel; V. K. Wong; K. A. Brown; L. G. Ratner; G. Glass; C. A. Miller; M. Vetterli; F. Z. Khiari

doi:10.1103/PhysRevLett.65.3241

High-precision measurement of the analyzing power in large-P2 spin-polarized 24-GeV/c proton-proton elastic scattering

D. G. Crabb^*
, W. A. Kaufman
, A. D. Krisch
, A. M.T. Lin
, D. C. Peaslee
, R. A. Phelps
, R. S. Raymond
, T. Roser
, J. A. Stewart
, B. S. Van Guilder
, B. Vuaridel
, V. K. Wong
, K. A. Brown
, L. G. Ratner
, G. Glass
, C. A. Miller
, M. Vetterli
, F. Z. Khiari

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

We measured the analyzing power A out to P2=7.1 (GeV/c)2 with high precision by scattering a 24-GeV/c unpolarized proton beam from the new University of Michigan polarized proton target; the target 1-W cooling power allowed a beam intensity of more than 2×1011 protons per pulse. This high beam intensity together with the unexpectedly high average target polarization of about 85% allowed unusually accurate measurements of A at large P2. These precise data confirmed that the one-spin parameter A is nonzero and indeed quite large at high P2; most theoretical models predict that A should go to zero.

Original language	English
Pages (from-to)	3241-3244
Number of pages	4
Journal	Physical Review Letters
Volume	65
Issue number	26
DOIs	https://doi.org/10.1103/PhysRevLett.65.3241
State	Published - 1990

ASJC Scopus subject areas

General Physics and Astronomy

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Crabb, D. G., Kaufman, W. A., Krisch, A. D., Lin, A. M. T., Peaslee, D. C., Phelps, R. A., Raymond, R. S., Roser, T., Stewart, J. A., Van Guilder, B. S., Vuaridel, B., Wong, V. K., Brown, K. A., Ratner, L. G., Glass, G., Miller, C. A., Vetterli, M., & Khiari, F. Z. (1990). High-precision measurement of the analyzing power in large-P2 spin-polarized 24-GeV/c proton-proton elastic scattering. Physical Review Letters, 65(26), 3241-3244. https://doi.org/10.1103/PhysRevLett.65.3241

@article{d275485c9d2f43cf820c894189e36aae,

title = "High-precision measurement of the analyzing power in large-P2 spin-polarized 24-GeV/c proton-proton elastic scattering",

abstract = "We measured the analyzing power A out to P2=7.1 (GeV/c)2 with high precision by scattering a 24-GeV/c unpolarized proton beam from the new University of Michigan polarized proton target; the target 1-W cooling power allowed a beam intensity of more than 2×1011 protons per pulse. This high beam intensity together with the unexpectedly high average target polarization of about 85\% allowed unusually accurate measurements of A at large P2. These precise data confirmed that the one-spin parameter A is nonzero and indeed quite large at high P2; most theoretical models predict that A should go to zero.",

author = "Crabb, \{D. G.\} and Kaufman, \{W. A.\} and Krisch, \{A. D.\} and Lin, \{A. M.T.\} and Peaslee, \{D. C.\} and Phelps, \{R. A.\} and Raymond, \{R. S.\} and T. Roser and Stewart, \{J. A.\} and \{Van Guilder\}, \{B. S.\} and B. Vuaridel and Wong, \{V. K.\} and Brown, \{K. A.\} and Ratner, \{L. G.\} and G. Glass and Miller, \{C. A.\} and M. Vetterli and Khiari, \{F. Z.\}",

year = "1990",

doi = "10.1103/PhysRevLett.65.3241",

language = "English",

volume = "65",

pages = "3241--3244",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "26",

}

Crabb, DG, Kaufman, WA, Krisch, AD, Lin, AMT, Peaslee, DC, Phelps, RA, Raymond, RS, Roser, T, Stewart, JA, Van Guilder, BS, Vuaridel, B, Wong, VK, Brown, KA, Ratner, LG, Glass, G, Miller, CA, Vetterli, M & Khiari, FZ 1990, 'High-precision measurement of the analyzing power in large-P2 spin-polarized 24-GeV/c proton-proton elastic scattering', Physical Review Letters, vol. 65, no. 26, pp. 3241-3244. https://doi.org/10.1103/PhysRevLett.65.3241

TY - JOUR

T1 - High-precision measurement of the analyzing power in large-P2 spin-polarized 24-GeV/c proton-proton elastic scattering

AU - Crabb, D. G.

AU - Kaufman, W. A.

AU - Krisch, A. D.

AU - Lin, A. M.T.

AU - Peaslee, D. C.

AU - Phelps, R. A.

AU - Raymond, R. S.

AU - Roser, T.

AU - Stewart, J. A.

AU - Van Guilder, B. S.

AU - Vuaridel, B.

AU - Wong, V. K.

AU - Brown, K. A.

AU - Ratner, L. G.

AU - Glass, G.

AU - Miller, C. A.

AU - Vetterli, M.

AU - Khiari, F. Z.

PY - 1990

Y1 - 1990

N2 - We measured the analyzing power A out to P2=7.1 (GeV/c)2 with high precision by scattering a 24-GeV/c unpolarized proton beam from the new University of Michigan polarized proton target; the target 1-W cooling power allowed a beam intensity of more than 2×1011 protons per pulse. This high beam intensity together with the unexpectedly high average target polarization of about 85% allowed unusually accurate measurements of A at large P2. These precise data confirmed that the one-spin parameter A is nonzero and indeed quite large at high P2; most theoretical models predict that A should go to zero.

AB - We measured the analyzing power A out to P2=7.1 (GeV/c)2 with high precision by scattering a 24-GeV/c unpolarized proton beam from the new University of Michigan polarized proton target; the target 1-W cooling power allowed a beam intensity of more than 2×1011 protons per pulse. This high beam intensity together with the unexpectedly high average target polarization of about 85% allowed unusually accurate measurements of A at large P2. These precise data confirmed that the one-spin parameter A is nonzero and indeed quite large at high P2; most theoretical models predict that A should go to zero.

UR - https://www.scopus.com/pages/publications/7044261665

U2 - 10.1103/PhysRevLett.65.3241

DO - 10.1103/PhysRevLett.65.3241

M3 - Article

AN - SCOPUS:7044261665

SN - 0031-9007

VL - 65

SP - 3241

EP - 3244

JO - Physical Review Letters

JF - Physical Review Letters

IS - 26

ER -

High-precision measurement of the analyzing power in large-P2 spin-polarized 24-GeV/c proton-proton elastic scattering

Abstract

ASJC Scopus subject areas

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